EVALUATED PARAMETER REFERENCE

cosmological gravity only.

Browse the evaluated DIPL parameters for this pinned Arepo example. Values come from the bundled setup; a run using overrides can differ.

153 model parameters14 top-level groupsSource 351aa8111a32Explore 3D graph ↗Browse schemas ↗Try an override ↗

What this reference shows

Each entry gives the effective value, type, description, and relevant constraints. Open “Schema & provenance” for additional metadata and links to DIPL source files at the recorded lines.

PARAMETER GROUP

Analysis

2 parameters

analysis.subfind.linking_neighbors

linking neighbors

EFFECTIVE VALUE20

Minimum number of particles/cells retained in a Subfind group.

Try changing this parameter ↗

Type int64

Validation {.} > 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: analysis_settings, subfind_analysis_settings
Supplied by schema: subfind_analysis_settings
Validation condition: {.} > 0
Requires: build.analysis.subfind

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/analysis.dip:5
Declaration: linking_neighbors int
Modified at: profile.dip:151
Modification: linking_neighbors = 20

Notes

Author guidance (advisory; not enforced by these metadata fields):

analysis.subfind.opening_angle

opening angle

EFFECTIVE VALUE0.7

Subfind tree opening angle.

Try changing this parameter ↗

Type float64

Validation {.} > 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: analysis_settings, subfind_analysis_settings
Supplied by schema: subfind_analysis_settings
Validation condition: {.} > 0
Requires: build.analysis.subfind

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/analysis.dip:12
Declaration: opening_angle float
Modified at: profile.dip:152
Modification: opening_angle = 0.7

Notes

Author guidance (advisory; not enforced by these metadata fields):

PARAMETER GROUP

Build

67 parameters

build.analysis.fof

fof

EFFECTIVE VALUEtrue

Compile the friends-of-friends halo finder.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:382
Declaration: fof bool = false
Modified at: profile.dip:37
Modification: fof = true

build.analysis.fof.primary_link_type_mask

primary link type mask

EFFECTIVE VALUE2

Particle-type bit mask used as FoF primary linking tracers.

Try changing this parameter ↗

Type int64

Validation {.} >= 0

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Validation condition: {.} >= 0

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:387
Declaration: primary_link_type_mask int = 2
Modified at: profile.dip:38
Modification: primary_link_type_mask = 2

build.analysis.fof.secondary_link_type_mask

secondary link type mask

EFFECTIVE VALUE49

Particle-type bit mask attached to nearest FoF primary tracers.

Try changing this parameter ↗

Type int64

Validation {.} >= 0

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Validation condition: {.} >= 0

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:393
Declaration: secondary_link_type_mask int = 0
Modified at: profile.dip:39
Modification: secondary_link_type_mask = 49

build.analysis.subfind

subfind

EFFECTIVE VALUEtrue

Compile the Subfind substructure finder; requires FoF.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Requires: build.analysis.fof

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:399
Declaration: subfind bool = false
Modified at: profile.dip:40
Modification: subfind = true

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.analysis.subfind.calculate_velocity_dispersion

calculate velocity dispersion

EFFECTIVE VALUEtrue

Calculate additional Subfind velocity-dispersion information.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:410
Declaration: calculate_velocity_dispersion bool = false
Modified at: profile.dip:42
Modification: calculate_velocity_dispersion = true

build.analysis.subfind.extended_properties

extended properties

EFFECTIVE VALUEtrue

Calculate extended Subfind angular-momentum and energy properties.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:415
Declaration: extended_properties bool = false
Modified at: profile.dip:43
Modification: extended_properties = true

build.analysis.subfind.save_density_estimates

save density estimates

EFFECTIVE VALUEtrue

Save Subfind smoothing lengths, densities, and velocity dispersions.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:405
Declaration: save_density_estimates bool = false
Modified at: profile.dip:41
Modification: save_density_estimates = true

build.boundaries.x_mode

x mode

EFFECTIVE VALUE0

X-boundary mode; zero leaves no REFLECTIVE_X compile option.

Try changing this parameter ↗

Type int64

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Allowed options: 0, 1, 2

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:8
Declaration: x_mode int = 0

build.boundaries.y_mode

y mode

EFFECTIVE VALUE0

Y-boundary mode; zero leaves no REFLECTIVE_Y compile option.

Try changing this parameter ↗

Type int64

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Allowed options: 0, 1, 2

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:18
Declaration: y_mode int = 0

build.boundaries.z_mode

z mode

EFFECTIVE VALUE0

Z-boundary mode; zero leaves no REFLECTIVE_Z compile option.

Try changing this parameter ↗

Type int64

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Allowed options: 0, 1, 2

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:24
Declaration: z_mode int = 0

build.diagnostics.debug

debug

EFFECTIVE VALUEtrue

Enable Arepo debugging facilities and core-dump support.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:452
Declaration: debug bool = false
Modified at: profile.dip:47
Modification: debug = true

build.geometry.one_dimensional

one dimensional

EFFECTIVE VALUEfalse

Restrict the Voronoi mesh and hydrodynamics to one dimension.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:31
Declaration: one_dimensional bool = false

build.geometry.spherical_one_dimensional

spherical one dimensional

EFFECTIVE VALUEfalse

Use one-dimensional spherical geometry.

Try changing this parameter ↗

Type bool

Scientific impact Uses the first coordinate as radius under spherical symmetry.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Scientific impact: Uses the first coordinate as radius under spherical symmetry.
Requires: build.geometry.one_dimensional

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:41
Declaration: spherical_one_dimensional bool = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.geometry.static_mesh

static mesh

EFFECTIVE VALUEfalse

Use a static Voronoi mesh.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Performance impact: Disables domain decomposition by default; mesh-generating points have zero velocity.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:49
Declaration: static_mesh bool = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.geometry.two_dimensional

two dimensional

EFFECTIVE VALUEfalse

Restrict the Voronoi mesh and hydrodynamics to two dimensions.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:36
Declaration: two_dimensional bool = false

build.gravity.cell_center_evaluation

cell center evaluation

EFFECTIVE VALUEtrue

Evaluate cell gravity at geometric centres; requires hierarchical gravity.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Requires: build.gravity.hierarchical

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:122
Declaration: cell_center_evaluation bool = false
Modified at: profile.dip:13
Modification: cell_center_evaluation = true

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.gravity.direct_summation

direct summation

EFFECTIVE VALUEtrue

Allow direct summation for small active particle sets.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Performance impact: Avoids tree-walk overhead for sufficiently small active particle sets.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:128
Declaration: direct_summation bool = false
Modified at: profile.dip:14
Modification: direct_summation = true

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.gravity.direct_summation.threshold

threshold

EFFECTIVE VALUE500

Active-particle threshold below which direct gravity summation is used.

Try changing this parameter ↗

Type int64

Validation {.} > 0

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Validation condition: {.} > 0
Recommended range: Positive; Arepo's documented default is 3000 active particles.
Performance impact: Increasing the threshold selects direct summation for more active-particle sets.
Requires: build.gravity.direct_summation

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:135
Declaration: threshold int = 3000
Modified at: profile.dip:15
Modification: threshold = 500

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.gravity.evaluate_potential

evaluate potential

EFFECTIVE VALUEfalse

Calculate gravitational potentials.

Try changing this parameter ↗

Type bool

Scientific impact Enables potential-energy diagnostics for global energy-conservation tests.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Scientific impact: Enables potential-energy diagnostics for global energy-conservation tests.
Performance impact: Computes potential energy whenever global statistics are measured.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:221
Declaration: evaluate_potential bool = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.gravity.hierarchical

hierarchical

EFFECTIVE VALUEtrue

Use hierarchical gravity time integration.

Try changing this parameter ↗

Type bool

Scientific impact Uses hierarchical splitting of gravitational time integration.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Scientific impact: Uses hierarchical splitting of gravitational time integration.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:115
Declaration: hierarchical bool = false
Modified at: profile.dip:12
Modification: hierarchical = true

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.gravity.individual_softening_type_mask

individual softening type mask

EFFECTIVE VALUE32

Particle-type bit mask selecting individual gravity softening.

Try changing this parameter ↗

Type int64

Scientific impact Assigns selected particle types a softening based on mass relative to type 1; primarily useful for zoom simulations.

Validation {.} >= 0

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Validation condition: {.} >= 0
Scientific impact: Assigns selected particle types a softening based on mass relative to type 1; primarily useful for zoom simulations.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:154
Declaration: individual_softening_type_mask int = 0
Modified at: profile.dip:17
Modification: individual_softening_type_mask = 32

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.gravity.multiple_node_softening

multiple node softening

EFFECTIVE VALUEtrue

Retain component-specific softenings when using softened tree nodes.

Try changing this parameter ↗

Type bool

Scientific impact Approximates component centres of mass separately when evaluating softened node-particle interactions.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Scientific impact: Approximates component centres of mass separately when evaluating softened node-particle interactions.
Performance impact: Can avoid a substantial tree-walk penalty from opening softened nodes, but stores component masses per tree node.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:145
Declaration: multiple_node_softening bool = false
Modified at: profile.dip:16
Modification: multiple_node_softening = true

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.gravity.non_periodic

non periodic

EFFECTIVE VALUEfalse

Compile non-periodic gravity.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:216
Declaration: non_periodic bool = false

build.gravity.particle_mesh

particle mesh

EFFECTIVE VALUEtrue

Enable periodic particle-mesh gravity in the TreePM solver.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:163
Declaration: particle_mesh bool = false
Modified at: profile.dip:18
Modification: particle_mesh = true

build.gravity.particle_mesh.enlarge_high_resolution_region

enlarge high resolution region

EFFECTIVE VALUE0

Expansion factor for the TreePM high-resolution region.

Try changing this parameter ↗

Type float64

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Performance impact: A larger buffer reduces expensive high-resolution mesh-geometry recalculations for expanding particle sets.
Requires: build.gravity.particle_mesh.high_resolution_type_mask

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:193
Declaration: enlarge_high_resolution_region float = 0

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.gravity.particle_mesh.grid_resolution

grid resolution

EFFECTIVE VALUE256

Particle-mesh cells per dimension; zero is disabled.

Try changing this parameter ↗

Type int64

Scientific impact Enables TreePM, using PM for long-range and the tree for short-range forces.

Validation {.} >= 0

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Validation condition: {.} >= 0
Recommended range: At least 256 for TreePM accuracy; powers of two are fastest for FFTs.
Scientific impact: Enables TreePM, using PM for long-range and the tree for short-range forces.
Performance impact: Larger grids increase PM-force resolution, memory use, and FFT cost.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:166
Declaration: grid_resolution int = 0
Modified at: profile.dip:19
Modification: grid_resolution = 256

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.gravity.particle_mesh.high_resolution_grid_boost

high resolution grid boost

EFFECTIVE VALUE0

Resolution multiplier for a zoom TreePM grid.

Try changing this parameter ↗

Type int64

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Performance impact: Changes high-resolution FFT mesh size in proportion to PMGRID.
Requires: build.gravity.particle_mesh.high_resolution_type_mask

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:201
Declaration: high_resolution_grid_boost int = 0

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.gravity.particle_mesh.high_resolution_type_mask

high resolution type mask

EFFECTIVE VALUE0

Particle-type mask defining the TreePM high-resolution region.

Try changing this parameter ↗

Type int64

Scientific impact Adds a high-resolution Fourier mesh around the selected particle types for zoom simulations.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Scientific impact: Adds a high-resolution Fourier mesh around the selected particle types for zoom simulations.
Requires: build.gravity.particle_mesh.grid_resolution

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:185
Declaration: high_resolution_type_mask int = 0

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.gravity.particle_mesh.short_range_cutoff

short range cutoff

EFFECTIVE VALUE5

TreePM short-range cutoff in particle-mesh cell units.

Try changing this parameter ↗

Type float64

Validation {.} > 0

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Validation condition: {.} > 0
Rationale: 4.5 mesh cells is Arepo's documented default.
Performance impact: Larger cutoffs extend the tree calculation further from each particle.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:176
Declaration: short_range_cutoff float = 4.5
Modified at: profile.dip:20
Modification: short_range_cutoff = 5.0

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.gravity.particle_mesh.zoom_optimized

zoom optimized

EFFECTIVE VALUEfalse

Use the TreePM algorithm optimized for cosmological zoom simulations.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Performance impact: Uses a communication algorithm robust to clustered zoom data, but slower than the default for homogeneous periodic boxes.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:209
Declaration: zoom_optimized bool = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.gravity.self_gravity

self gravity

EFFECTIVE VALUEtrue

Compile gravitational interactions between particles and cells.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:110
Declaration: self_gravity bool = false
Modified at: profile.dip:11
Modification: self_gravity = true

build.gravity.softening_types

softening types

EFFECTIVE VALUE2

Number of available gravitational-softening families.

Try changing this parameter ↗

Type int64

Scientific impact Defines the available gravity-softening families that particle types may share.

Validation {.} >= 2

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Validation condition: {.} >= 2
Rationale: Defaults to Arepo's NTYPES (six in this source tree) when NSOFTTYPES is omitted; must match the configured SofteningComovingTypeN entries.
Scientific impact: Defines the available gravity-softening families that particle types may share.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:229
Declaration: softening_types int = 6
Modified at: profile.dip:21
Modification: softening_types = 2

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.initial_conditions.generate_gas_from_dark_matter

generate gas from dark matter

EFFECTIVE VALUEfalse

Generate gas particles from dark-matter-only initial conditions.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:314
Declaration: generate_gas_from_dark_matter bool = false

build.io.cpu_csv

cpu csv

EFFECTIVE VALUEfalse

Write the supplementary cpu.csv performance log.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:308
Declaration: cpu_csv bool = false

build.io.hdf5

hdf5

EFFECTIVE VALUEtrue

Compile HDF5 snapshot and initial-condition support.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:274
Declaration: hdf5 bool = false
Modified at: profile.dip:29
Modification: hdf5 = true

build.io.input_double_precision

input double precision

EFFECTIVE VALUEfalse

Read initial conditions in double precision.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:288
Declaration: input_double_precision bool = false

build.io.output_coordinates_double

output coordinates double

EFFECTIVE VALUEtrue

Always write coordinates in double precision.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:293
Declaration: output_coordinates_double bool = false
Modified at: profile.dip:31
Modification: output_coordinates_double = true

build.io.output_double_precision

output double precision

EFFECTIVE VALUEfalse

Write snapshot fields in double precision.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:298
Declaration: output_double_precision bool = false

build.io.read_mass_as_density

read mass as density

EFFECTIVE VALUEfalse

Interpret IC Mass fields as densities.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:303
Declaration: read_mass_as_density bool = false

build.io.reduced_flush

reduced flush

EFFECTIVE VALUEtrue

Reduce log-file flush frequency.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Performance impact: Reduces filesystem flush activity by avoiding flushes at every synchronization point.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:281
Declaration: reduced_flush bool = false
Modified at: profile.dip:30
Modification: reduced_flush = true

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.mesh.adaptive_hydro_softening

adaptive hydro softening

EFFECTIVE VALUEtrue

Compile adaptive gas-cell gravitational softening.

Try changing this parameter ↗

Type bool

Scientific impact Varies hydro-cell softening with cell radius using the runtime adaptive-softening table.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Scientific impact: Varies hydro-cell softening with cell radius using the runtime adaptive-softening table.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:328
Declaration: adaptive_hydro_softening bool = false
Modified at: profile.dip:35
Modification: adaptive_hydro_softening = true

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.mesh.center_of_mass_drift

center of mass drift

EFFECTIVE VALUEfalse

Regularize mesh-generating-point drift from cell centres of mass.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:340
Declaration: center_of_mass_drift bool = false

build.mesh.drift_limited_by_sound_speed

drift limited by sound speed

EFFECTIVE VALUEfalse

Limit centre-of-mass regularization by local sound speed.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Requires: build.mesh.center_of_mass_drift

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:345
Declaration: drift_limited_by_sound_speed bool = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.mesh.face_angle_regularization

face angle regularization

EFFECTIVE VALUEfalse

Regularize mesh cells using their maximum face angle.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:335
Declaration: face_angle_regularization bool = false
Modified at: profile.dip:33
Modification: face_angle_regularization = false

build.mesh.no_refine_background_grid

no refine background grid

EFFECTIVE VALUEfalse

Exclude the background grid from refinement.

Try changing this parameter ↗

Type bool

Scientific impact Prevents derefinement of sufficiently large background cells in cosmological zoom simulations.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Scientific impact: Prevents derefinement of sufficiently large background cells in cosmological zoom simulations.
Requires: build.mesh.refinement

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:359
Declaration: no_refine_background_grid bool = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.mesh.override_peanogrid_warning

override peanogrid warning

EFFECTIVE VALUEfalse

Allow configurations that exceed the Peano-grid warning threshold.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:367
Declaration: override_peanogrid_warning bool = false

build.mesh.refinement

refinement

EFFECTIVE VALUEfalse

Compile cell refinement and derefinement.

Try changing this parameter ↗

Type bool

Scientific impact Enables dynamic cell refinement and derefinement; the default target is gas-cell mass.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Scientific impact: Enables dynamic cell refinement and derefinement; the default target is gas-cell mass.
Conflicts with: build.geometry.one_dimensional

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:320
Declaration: refinement bool = false
Modified at: profile.dip:34
Modification: refinement = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.mesh.volume_refinement

volume refinement

EFFECTIVE VALUEfalse

Compile volume-limited mesh refinement.

Try changing this parameter ↗

Type bool

Scientific impact Enforces absolute cell-volume bounds and a maximum neighbouring-cell volume contrast.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Scientific impact: Enforces absolute cell-volume bounds and a maximum neighbouring-cell volume contrast.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:352
Declaration: volume_refinement bool = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.numerics.riemann_hlld

riemann hlld

EFFECTIVE VALUEfalse

Use the HLLD Riemann solver for ideal MHD.

Try changing this parameter ↗

Type bool

Scientific impact Selects the HLLD approximate Riemann solver required for MHD.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Scientific impact: Selects the HLLD approximate Riemann solver required for MHD.
Requires: build.physics.magnetohydrodynamics

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:373
Declaration: riemann_hlld bool = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.output.acceleration

acceleration

EFFECTIVE VALUEfalse

Write gravitational accelerations.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:436
Declaration: acceleration bool = false

build.output.center_of_mass

center of mass

EFFECTIVE VALUEfalse

Write gas-cell centres of mass.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:426
Declaration: center_of_mass bool = false

build.output.magnetic_field_gradient

magnetic field gradient

EFFECTIVE VALUEfalse

Write magnetic-field gradients.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:431
Declaration: magnetic_field_gradient bool = false

build.output.potential

potential

EFFECTIVE VALUEfalse

Write gravitational potentials.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:446
Declaration: potential bool = false

build.output.pressure_gradient

pressure gradient

EFFECTIVE VALUEfalse

Write pressure gradients.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:441
Declaration: pressure_gradient bool = false

build.output.process_schedule_exactly

process schedule exactly

EFFECTIVE VALUEtrue

Process output-list times before starting to improve timing accuracy.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:421
Declaration: process_schedule_exactly bool = false
Modified at: profile.dip:45
Modification: process_schedule_exactly = true

build.physics.adiabatic_index

adiabatic index

EFFECTIVE VALUE0

Compile-time gas adiabatic index; zero selects Arepo's default.

Try changing this parameter ↗

Type float64

Scientific impact Sets the equation-of-state adiabatic index for ideal hydrodynamics.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Rationale: A value of zero delegates to Arepo's ideal-hydrodynamics default of 5/3.
Scientific impact: Sets the equation-of-state adiabatic index for ideal hydrodynamics.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:101
Declaration: adiabatic_index float = 0

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.physics.cooling

cooling

EFFECTIVE VALUEfalse

Compile radiative cooling and UV-background support.

Try changing this parameter ↗

Type bool

Scientific impact Enables primordial cooling physics and conversions to proper cgs quantities.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Scientific impact: Enables primordial cooling physics and conversions to proper cgs quantities.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:57
Declaration: cooling bool = false
Modified at: profile.dip:8
Modification: cooling = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.physics.jeans_cell_stability

jeans cell stability

EFFECTIVE VALUEfalse

Enforce the Jeans-stability temperature floor for gas cells.

Try changing this parameter ↗

Type bool

Scientific impact Imposes an adaptive temperature floor intended to keep the Jeans length resolved.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Scientific impact: Imposes an adaptive temperature floor intended to keep the Jeans length resolved.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:71
Declaration: jeans_cell_stability bool = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.physics.magnetohydrodynamics

magnetohydrodynamics

EFFECTIVE VALUEfalse

Compile ideal magnetohydrodynamics.

Try changing this parameter ↗

Type bool

Scientific impact Evolves ideal MHD; a zero initial magnetic field remains zero under the ideal-MHD equations.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Scientific impact: Evolves ideal MHD; a zero initial magnetic field remains zero under the ideal-MHD equations.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:78
Declaration: magnetohydrodynamics bool = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.physics.magnetohydrodynamics.powell_cleaning

powell cleaning

EFFECTIVE VALUEfalse

Use Powell eight-wave divergence-control terms for MHD.

Try changing this parameter ↗

Type bool

Scientific impact Adds Powell eight-wave divergence-control terms to the MHD equations.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Scientific impact: Adds Powell eight-wave divergence-control terms to the MHD equations.
Requires: build.physics.magnetohydrodynamics

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:85
Declaration: powell_cleaning bool = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.physics.magnetohydrodynamics.powell_limit_timestep

powell limit timestep

EFFECTIVE VALUEfalse

Limit timesteps for Powell divergence-control stability.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Performance impact: Adds a timestep constraint required by Powell divergence control.
Requires: build.physics.magnetohydrodynamics

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:93
Declaration: powell_limit_timestep bool = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.physics.star_formation

star formation

EFFECTIVE VALUEfalse

Compile the Springel-Hernquist multiphase star-formation model.

Try changing this parameter ↗

Type bool

Scientific impact Turns eligible dense gas into collisionless star particles using the Springel-Hernquist (2003) model.

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Scientific impact: Turns eligible dense gas into collisionless star particles using the Springel-Hernquist (2003) model.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:64
Declaration: star_formation bool = false
Modified at: profile.dip:9
Modification: star_formation = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.precision.fftw_double

fftw double

EFFECTIVE VALUEtrue

Use double-precision FFTW transforms.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:263
Declaration: fftw_double bool = false
Modified at: profile.dip:26
Modification: fftw_double = true

build.precision.mode

mode

EFFECTIVE VALUE1

Arepo precision mode; zero leaves DOUBLEPRECISION unspecified.

Try changing this parameter ↗

Type int64

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Allowed options: 0, 1, 2, 3

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:252
Declaration: mode int = 0
Modified at: profile.dip:25
Modification: mode = 1

build.precision.neighbor_tree_double

neighbor tree double

EFFECTIVE VALUEtrue

Use double precision for neighbor-tree node extensions.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:268
Declaration: neighbor_tree_double bool = false
Modified at: profile.dip:27
Modification: neighbor_tree_double = true

build.time.force_equal_timesteps

force equal timesteps

EFFECTIVE VALUEfalse

Force all particles/cells onto equal timesteps.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build
Performance impact: Can increase computational work by preventing individual adaptive timesteps.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:239
Declaration: force_equal_timesteps bool = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

build.time.tree_based_timesteps

tree based timesteps

EFFECTIVE VALUEtrue

Use the non-local, tree-based timestep criterion.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:config
Applied schemas: arepo_build
Supplied by schema: arepo_build

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/build.dip:246
Declaration: tree_based_timesteps bool = false
Modified at: profile.dip:23
Modification: tree_based_timesteps = true

PARAMETER GROUP

Code Units

3 parameters

code_units.length

length

EFFECTIVE VALUE3.086e21

One Arepo length unit (one kiloparsec).

Try changing this parameter ↗

Type float64Units cm

Schema & provenance

Model metadata

Tags: arepo:param
Rationale: Arepo interprets its native length unit in cm/h.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/cosmological_units.dip:5
Declaration: length float = 3.085678e21 cm

Notes

Author guidance (advisory; not enforced by these metadata fields):

code_units.mass

mass

EFFECTIVE VALUE1.989e43

One Arepo mass unit (10^10 solar masses).

Try changing this parameter ↗

Type float64Units g

Schema & provenance

Model metadata

Tags: arepo:param
Rationale: Arepo interprets its native mass unit in g/h.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/cosmological_units.dip:12
Declaration: mass float = 1.989e43 g

Notes

Author guidance (advisory; not enforced by these metadata fields):

code_units.velocity

velocity

EFFECTIVE VALUE1e5

One Arepo velocity unit (one kilometre per second).

Try changing this parameter ↗

Type float64Units cm*s-1

Schema & provenance

Model metadata

Tags: arepo:param
Rationale: Together with the length and mass bases, this determines Arepo's internal time unit.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/cosmological_units.dip:19
Declaration: velocity float = 1e5 cm/s

Notes

Author guidance (advisory; not enforced by these metadata fields):

PARAMETER GROUP

Cosmology

8 parameters

cosmology.baryon_density

baryon density

EFFECTIVE VALUE0

Present-day baryon density parameter, OmegaBaryon.

Try changing this parameter ↗

Type float64

Scientific impact Defines the z=0 baryon density relative to critical density for comoving integration, halo/subhalo finding, and star formation.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: cosmology_settings
Supplied by schema: cosmology_settings
Used by: cosmology.dark_matter_density
Scientific impact: Defines the z=0 baryon density relative to critical density for comoving integration, halo/subhalo finding, and star formation.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/cosmology.dip:12
Declaration: baryon_density float
Modified at: profile.dip:96
Modification: baryon_density = 0

Notes

Author guidance (advisory; not enforced by these metadata fields):

cosmology.dark_energy_density

dark energy density

EFFECTIVE VALUE0.6911

Present-day dark-energy density parameter, OmegaLambda.

Try changing this parameter ↗

Type float64

Scientific impact Defines the z=0 vacuum-energy density relative to critical density for comoving integration and halo/subhalo finding.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: cosmology_settings
Supplied by schema: cosmology_settings
Expression: 1 - {?cosmology.matter_density}
Reads during evaluation: ?cosmology.matter_density
Rationale: Often derived from the remaining density budget of a flat cosmology.
Scientific impact: Defines the z=0 vacuum-energy density relative to critical density for comoving integration and halo/subhalo finding.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/cosmology.dip:33
Declaration: dark_energy_density float
Modified at: profile.dip:101
Modification: dark_energy_density float = ( 1 - {?cosmology.matter_density} )

Notes

Author guidance (advisory; not enforced by these metadata fields):

cosmology.dark_matter_density

dark matter density

EFFECTIVE VALUE0.3089

Present-day non-baryonic matter density derived from total and baryon density.

Try changing this parameter ↗

Type float64

Scientific impact Represents the non-baryonic matter component implied by the total and baryon density parameters.

Schema & provenance

Model metadata

Applied schemas: cosmology_settings
Supplied by schema: cosmology_settings
Expression: {?cosmology.matter_density} - {?cosmology.baryon_density}
Reads during evaluation: ?cosmology.matter_density, ?cosmology.baryon_density
Scientific impact: Represents the non-baryonic matter component implied by the total and baryon density parameters.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/cosmology.dip:41
Declaration: dark_matter_density float
Modified at: profile.dip:103
Modification: dark_matter_density float = ( {?cosmology.matter_density} - {?cosmology.baryon_density} )

Notes

Author guidance (advisory; not enforced by these metadata fields):

cosmology.final_redshift

final redshift

EFFECTIVE VALUE0

Final redshift from which the scale-factor end time is derived.

Try changing this parameter ↗

Type float64

Schema & provenance

Model metadata

Applied schemas: cosmology_settings
Supplied by schema: cosmology_settings
Reads during evaluation: ?simulation.time.final_redshift

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/cosmology.dip:30
Declaration: final_redshift float
Modified at: profile.dip:99
Modification: final_redshift = {?simulation.time.final_redshift}

cosmology.flat

flat

EFFECTIVE VALUEtrue

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Applied schemas: cosmology_settings

Source history

Declared at: profile.dip:100
Declaration: flat bool = true

cosmology.hubble_parameter

hubble parameter

EFFECTIVE VALUE0.6774

Dimensionless Hubble parameter h, written to HubbleParam.

Try changing this parameter ↗

Type float64

Scientific impact Sets the z=0 Hubble constant in units of 100 km s^-1 Mpc^-1 for physics that converts to proper cgs units.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: cosmology_settings
Supplied by schema: cosmology_settings
Rationale: For gravity and adiabatic gas dynamics Arepo absorbs h into its code units; use 1.0 unless conversions to proper cgs units, such as radiative cooling, are required.
Scientific impact: Sets the z=0 Hubble constant in units of 100 km s^-1 Mpc^-1 for physics that converts to proper cgs units.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/cosmology.dip:19
Declaration: hubble_parameter float
Modified at: profile.dip:97
Modification: hubble_parameter = 0.6774

Notes

Author guidance (advisory; not enforced by these metadata fields):

cosmology.initial_redshift

initial redshift

EFFECTIVE VALUE127

Initial redshift from which the scale-factor start time is derived.

Try changing this parameter ↗

Type float64

Schema & provenance

Model metadata

Applied schemas: cosmology_settings
Supplied by schema: cosmology_settings
Reads during evaluation: ?simulation.time.initial_redshift

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/cosmology.dip:27
Declaration: initial_redshift float
Modified at: profile.dip:98
Modification: initial_redshift = {?simulation.time.initial_redshift}

cosmology.matter_density

matter density

EFFECTIVE VALUE0.3089

Present-day total matter density parameter, Omega0.

Try changing this parameter ↗

Type float64

Scientific impact Defines the z=0 matter density relative to critical density for comoving integration and halo/subhalo finding.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: cosmology_settings
Supplied by schema: cosmology_settings
Used by: cosmology.dark_energy_density, cosmology.dark_matter_density
Scientific impact: Defines the z=0 matter density relative to critical density for comoving integration and halo/subhalo finding.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/cosmology.dip:5
Declaration: matter_density float
Modified at: profile.dip:95
Modification: matter_density = 0.3089

Notes

Author guidance (advisory; not enforced by these metadata fields):

PARAMETER GROUP

Datasets

10 parameters

datasets.Masses_L50n32_z0.data.mass

mass

EFFECTIVE VALUE

[4.16e14, 1.796e14, 1.773e14, 1.001e14, 8.961e13, 8.373e13, 7.032e13, 6.41e13, 6.345e13, 6.181e13, 5.723e13, 4.35e13, 4.121e13, 3.99e13, 3.728e13, 3.14e13, 3.074e13, 2.387e13, 2.355e13, 2.289e13, 2.224e13, 2.224e13, 2.06e13, 2.06e13, 2.028e13, 1.995e13, 1.962e13, 1.93e13, 1.93e13, 1.93e13, 1.897e13, 1.897e13, 1.864e13, 1.799e13, 1.733e13, 1.701e13, 1.701e13, 1.668e13, 1.603e13, 1.603e13, 1.603e13, 1.57e13, 1.537e13, 1.504e13, 1.504e13, 1.472e13, 1.472e13, 1.439e13, 1.308e13, 1.276e13, 1.243e13, 1.21e13, 1.145e13, 1.145e13, 1.112e13, 1.112e13, 1.079e13, 1.079e13, 1.047e13, 1.047e13, 1.047e13]

Try changing this parameter ↗

Type float64Shape 61

Schema & provenance

Source history

Declared at: DIP0_FILE17_TABLE:1
Declaration: mass float

datasets.Masses_L50n32_z0.output_file

output file

EFFECTIVE VALUE"Masses_L50n32_z0.txt"

Try changing this parameter ↗

Type str

Schema & provenance

Model metadata

Tags: arepo:dataset

Source history

Declared at: tables.dip:10
Declaration: output_file str = "Masses_L50n32_z0.txt"

datasets.Masses_L50n32_z1.data.mass

mass

EFFECTIVE VALUE

[1.04e14, 7.195e13, 7.13e13, 5.396e13, 3.859e13, 3.369e13, 3.336e13, 2.943e13, 2.616e13, 2.191e13, 2.093e13, 2.028e13, 1.93e13, 1.733e13, 1.504e13, 1.308e13, 1.276e13, 1.243e13, 1.243e13, 1.21e13, 1.21e13, 1.177e13, 1.145e13, 1.112e13, 1.079e13, 1.047e13, 1.047e13]

Try changing this parameter ↗

Type float64Shape 27

Schema & provenance

Source history

Declared at: DIP0_FILE17_TABLE:1
Declaration: mass float

datasets.Masses_L50n32_z1.output_file

output file

EFFECTIVE VALUE"Masses_L50n32_z1.txt"

Try changing this parameter ↗

Type str

Schema & provenance

Model metadata

Tags: arepo:dataset

Source history

Declared at: tables.dip:16
Declaration: output_file str = "Masses_L50n32_z1.txt"

datasets.inputspec_ics.data.column_1

column 1

EFFECTIVE VALUE

[6.283e-6, 6.44e-6, 6.601e-6, 6.766e-6, 6.935e-6, 7.109e-6, 7.287e-6, 7.469e-6, 7.655e-6, 7.847e-6, 8.043e-6, 8.244e-6, 8.45e-6, 8.661e-6, 8.878e-6, 9.1e-6, 9.327e-6, 9.561e-6, 9.8e-6, 1.004e-5, 1.03e-5, 1.055e-5, 1.082e-5, 1.109e-5, 1.136e-5, 1.165e-5, 1.194e-5, 1.224e-5, 1.254e-5, 1.286e-5, 1.318e-5, 1.351e-5, 1.385e-5, 1.419e-5, 1.455e-5, 1.491e-5, 1.528e-5, 1.567e-5, 1.606e-5, 1.646e-5, 1.687e-5, 1.729e-5, 1.772e-5, 1.817e-5, 1.862e-5, 1.909e-5, 1.956e-5, 2.005e-5, 2.056e-5, 2.107e-5, 2.16e-5, 2.214e-5, 2.269e-5, 2.326e-5, 2.384e-5, 2.443e-5, 2.504e-5, 2.567e-5, 2.631e-5, 2.697e-5, 2.764e-5, 2.834e-5, 2.904e-5, 2.977e-5, 3.051e-5, 3.128e-5, 3.206e-5, 3.286e-5, 3.368e-5, 3.452e-5, 3.539e-5, 3.627e-5, 3.718e-5, 3.811e-5, 3.906e-5, 4.004e-5, 4.104e-5, 4.206e-5, 4.312e-5, 4.419e-5, 4.53e-5, 4.643e-5, 4.759e-5, 4.878e-5, 5e-5, 5.125e-5, 5.253e-5, 5.385e-5, 5.519e-5, 5.657e-5, 5.799e-5, 5.944e-5, 6.092e-5, 6.245e-5, 6.401e-5, 6.561e-5, 6.725e-5, 6.893e-5, 7.065e-5, 7.242e-5, 7.423e-5, 7.608e-5, 7.799e-5, 7.994e-5, 8.193e-5, 8.398e-5, 8.608e-5, 8.823e-5, 9.044e-5, 9.27e-5, 9.502e-5, 9.739e-5, 9.983e-5, 1.023e-4, 1.049e-4, 1.075e-4, 1.102e-4, 1.129e-4, 1.158e-4, 1.187e-4, 1.216e-4, 1.247e-4, 1.278e-4, 1.31e-4, 1.343e-4, 1.376e-4, 1.411e-4, 1.446e-4, 1.482e-4, 1.519e-4, 1.557e-4, 1.596e-4, 1.636e-4, 1.677e-4, 1.719e-4, 1.762e-4, 1.806e-4, 1.851e-4, 1.897e-4, 1.944e-4, 1.993e-4, 2.043e-4, 2.094e-4, 2.146e-4, 2.2e-4, 2.255e-4, 2.311e-4, 2.369e-4, 2.428e-4, 2.489e-4, 2.551e-4, 2.615e-4, 2.68e-4, 2.747e-4, 2.816e-4, 2.887e-4, 2.959e-4, 3.033e-4, 3.108e-4, 3.186e-4, 3.266e-4, 3.348e-4, 3.431e-4, 3.517e-4, 3.605e-4, 3.695e-4, 3.787e-4, 3.882e-4, 3.979e-4, 4.079e-4, 4.181e-4, 4.285e-4, 4.392e-4, 4.502e-4, 4.615e-4, 4.73e-4, 4.848e-4, 4.969e-4, 5.094e-4, 5.221e-4, 5.351e-4, 5.485e-4, 5.622e-4, 5.763e-4, 5.907e-4, 6.055e-4, 6.206e-4, 6.361e-4, 6.52e-4, 6.683e-4, 6.85e-4, 7.022e-4, 7.197e-4, 7.377e-4, 7.562e-4, 7.751e-4, 7.944e-4, 8.143e-4, 8.347e-4, 8.555e-4, 8.769e-4, 8.988e-4, 9.213e-4, 9.443e-4, 9.679e-4, 9.921e-4, 1.017e-3, 1.042e-3, 1.068e-3, 1.095e-3, 1.123e-3, 1.151e-3, 1.179e-3, 1.209e-3, 1.239e-3, 1.27e-3, 1.302e-3, 1.334e-3, 1.368e-3, 1.402e-3, 1.437e-3, 1.473e-3, 1.51e-3, 1.547e-3, 1.586e-3, 1.626e-3, 1.666e-3, 1.708e-3, 1.751e-3, 1.795e-3, 1.839e-3, 1.885e-3, 1.932e-3, 1.981e-3, 2.03e-3, 2.081e-3, 2.133e-3, 2.186e-3, 2.241e-3, 2.297e-3, 2.355e-3, 2.413e-3, 2.474e-3, 2.536e-3, 2.599e-3, 2.664e-3, 2.731e-3, 2.799e-3, 2.869e-3, 2.941e-3, 3.014e-3, 3.089e-3, 3.167e-3, 3.246e-3, 3.327e-3, 3.41e-3, 3.495e-3, 3.583e-3, 3.672e-3, 3.764e-3, 3.858e-3, 3.955e-3, 4.054e-3, 4.155e-3, 4.259e-3, 4.365e-3, 4.474e-3, 4.586e-3, 4.701e-3, 4.818e-3, 4.939e-3, 5.062e-3, 5.189e-3, 5.319e-3, 5.452e-3, 5.588e-3, 5.728e-3, 5.871e-3, 6.017e-3, 6.168e-3, 6.322e-3, 6.48e-3, 6.642e-3, 6.808e-3, 6.978e-3, 7.153e-3, 7.332e-3, 7.515e-3, 7.703e-3, 7.895e-3, 8.093e-3, 8.295e-3, 8.503e-3, 8.715e-3, 8.933e-3, 9.156e-3, 9.385e-3, 9.62e-3, 9.86e-3, 0.01011, 0.01036, 0.01062, 0.01088, 0.01116, 0.01144, 0.01172, 0.01201, 0.01231, 0.01262, 0.01294, 0.01326, 0.01359, 0.01393, 0.01428, 0.01464, 0.015, 0.01538, 0.01576, 0.01616, 0.01656, 0.01698, 0.0174, 0.01783, 0.01828, 0.01874, 0.01921, 0.01969, 0.02018, 0.02068, 0.0212, 0.02173, 0.02227, 0.02283, 0.0234, 0.02399, 0.02459, 0.0252, 0.02583, 0.02648, 0.02714, 0.02782, 0.02851, 0.02922, 0.02995, 0.0307, 0.03147, 0.03226, 0.03306, 0.03389, 0.03474, 0.03561, 0.0365, 0.03741, 0.03834, 0.0393, 0.04029, 0.04129, 0.04233, 0.04338, 0.04447, 0.04558, 0.04672, 0.04789, 0.04908, 0.05031, 0.05157, 0.05286, 0.05418, 0.05553, 0.05692, 0.05835, 0.0598, 0.0613, 0.06283, 0.0644, 0.06601, 0.06766, 0.06935, 0.07109, 0.07287, 0.07469, 0.07655, 0.07847, 0.08043, 0.08244, 0.0845, 0.08661, 0.08878, 0.091, 0.09327, 0.09561, 0.098, 0.1004, 0.103, 0.1055, 0.1082, 0.1109, 0.1136, 0.1165, 0.1194, 0.1224, 0.1254, 0.1286, 0.1318, 0.1351, 0.1385, 0.1419, 0.1455, 0.1491, 0.1528, 0.1567, 0.1606, 0.1646, 0.1687, 0.1729, 0.1772, 0.1817, 0.1862, 0.1909, 0.1956, 0.2005, 0.2056, 0.2107, 0.216, 0.2214, 0.2269, 0.2326, 0.2384, 0.2443, 0.2504, 0.2567, 0.2631, 0.2697, 0.2764, 0.2834, 0.2904, 0.2977, 0.3051, 0.3128, 0.3206, 0.3286, 0.3368, 0.3452, 0.3539, 0.3627, 0.3718, 0.3811, 0.3906, 0.4004, 0.4104, 0.4206, 0.4312, 0.4419, 0.453, 0.4643, 0.4759, 0.4878, 0.5, 0.5125, 0.5253, 0.5385, 0.5519, 0.5657, 0.5799, 0.5944, 0.6092, 0.6245, 0.6401, 0.6561, 0.6725, 0.6893, 0.7065, 0.7242, 0.7423, 0.7608, 0.7799, 0.7994, 0.8193, 0.8398, 0.8608, 0.8823, 0.9044, 0.927, 0.9502, 0.9739, 0.9983, 1.023, 1.049, 1.075, 1.102, 1.129, 1.158, 1.187, 1.216, 1.247, 1.278, 1.31, 1.343, 1.376, 1.411, 1.446, 1.482, 1.519, 1.557, 1.596, 1.636, 1.677, 1.719, 1.762, 1.806, 1.851, 1.897, 1.944, 1.993, 2.043, 2.094, 2.146, 2.2, 2.255, 2.311, 2.369, 2.428, 2.489, 2.551, 2.615, 2.68, 2.747, 2.816, 2.887, 2.959, 3.033, 3.109, 3.186, 3.266, 3.348, 3.431, 3.517, 3.605, 3.695, 3.787, 3.882, 3.979, 4.079, 4.181, 4.285, 4.392, 4.502, 4.615, 4.73, 4.848, 4.969, 5.094, 5.221, 5.352, 5.485, 5.622, 5.763, 5.907, 6.055, 6.206]

Try changing this parameter ↗

Type float64Shape 560

Schema & provenance

Source history

Declared at: DIP0_FILE17_TABLE:1
Declaration: column_1 float

datasets.inputspec_ics.data.column_2

column 2

EFFECTIVE VALUE

[2.178e-4, 2.381e-4, 2.602e-4, 2.843e-4, 3.106e-4, 3.392e-4, 3.704e-4, 4.043e-4, 4.413e-4, 4.814e-4, 5.251e-4, 5.725e-4, 6.241e-4, 6.801e-4, 7.409e-4, 8.069e-4, 8.785e-4, 9.561e-4, 1.04e-3, 1.131e-3, 1.23e-3, 1.337e-3, 1.452e-3, 1.577e-3, 1.712e-3, 1.858e-3, 2.015e-3, 2.184e-3, 2.367e-3, 2.564e-3, 2.775e-3, 3.003e-3, 3.247e-3, 3.51e-3, 3.791e-3, 4.093e-3, 4.416e-3, 4.762e-3, 5.131e-3, 5.525e-3, 5.945e-3, 6.392e-3, 6.868e-3, 7.374e-3, 7.912e-3, 8.482e-3, 9.086e-3, 9.726e-3, 0.0104, 0.01112, 0.01187, 0.01267, 0.01351, 0.0144, 0.01533, 0.01632, 0.01735, 0.01844, 0.01959, 0.0208, 0.02207, 0.02341, 0.02482, 0.0263, 0.02787, 0.02951, 0.03124, 0.03305, 0.03497, 0.03698, 0.03909, 0.04132, 0.04366, 0.04611, 0.04869, 0.0514, 0.05425, 0.05723, 0.06036, 0.06364, 0.06707, 0.07067, 0.07444, 0.07838, 0.0825, 0.0868, 0.0913, 0.09599, 0.1009, 0.106, 0.1113, 0.1168, 0.1226, 0.1286, 0.1349, 0.1413, 0.1481, 0.1551, 0.1623, 0.1699, 0.1777, 0.1857, 0.1941, 0.2028, 0.2117, 0.221, 0.2305, 0.2404, 0.2506, 0.2611, 0.272, 0.2832, 0.2947, 0.3066, 0.3188, 0.3314, 0.3443, 0.3576, 0.3713, 0.3854, 0.3998, 0.4146, 0.4297, 0.4453, 0.4613, 0.4776, 0.4944, 0.5115, 0.5291, 0.5471, 0.5655, 0.5843, 0.6035, 0.6231, 0.6432, 0.6637, 0.6846, 0.7059, 0.7277, 0.7499, 0.7726, 0.7957, 0.8192, 0.8432, 0.8677, 0.8926, 0.9179, 0.9437, 0.97, 0.9967, 1.024, 1.052, 1.08, 1.108, 1.137, 1.167, 1.197, 1.228, 1.258, 1.29, 1.322, 1.354, 1.387, 1.421, 1.455, 1.489, 1.524, 1.56, 1.596, 1.632, 1.669, 1.707, 1.745, 1.783, 1.822, 1.862, 1.902, 1.943, 1.984, 2.026, 2.068, 2.111, 2.154, 2.198, 2.243, 2.288, 2.334, 2.38, 2.427, 2.474, 2.522, 2.57, 2.619, 2.669, 2.719, 2.77, 2.822, 2.874, 2.926, 2.979, 3.033, 3.087, 3.142, 3.198, 3.254, 3.311, 3.368, 3.426, 3.485, 3.544, 3.604, 3.664, 3.725, 3.787, 3.849, 3.912, 3.975, 4.039, 4.104, 4.169, 4.235, 4.302, 4.369, 4.436, 4.505, 4.574, 4.643, 4.714, 4.784, 4.856, 4.928, 5, 5.074, 5.147, 5.222, 5.297, 5.373, 5.449, 5.526, 5.603, 5.681, 5.76, 5.839, 5.919, 5.999, 6.08, 6.162, 6.244, 6.327, 6.41, 6.494, 6.578, 6.664, 6.749, 6.835, 6.922, 7.009, 7.097, 7.186, 7.275, 7.364, 7.454, 7.545, 7.636, 7.728, 7.82, 7.913, 8.007, 8.101, 8.195, 8.29, 8.386, 8.482, 8.578, 8.675, 8.773, 8.871, 8.97, 9.069, 9.168, 9.269, 9.369, 9.471, 9.572, 9.674, 9.777, 9.88, 9.984, 10.09, 10.19, 10.3, 10.4, 10.51, 10.62, 10.72, 10.83, 10.94, 11.05, 11.16, 11.27, 11.38, 11.49, 11.6, 11.71, 11.82, 11.93, 12.04, 12.16, 12.27, 12.38, 12.5, 12.61, 12.73, 12.84, 12.96, 13.08, 13.19, 13.31, 13.43, 13.55, 13.67, 13.78, 13.9, 14.02, 14.14, 14.26, 14.39, 14.51, 14.63, 14.75, 14.87, 15, 15.12, 15.24, 15.37, 15.49, 15.62, 15.74, 15.87, 16, 16.12, 16.25, 16.38, 16.51, 16.63, 16.76, 16.89, 17.02, 17.15, 17.28, 17.41, 17.54, 17.67, 17.81, 17.94, 18.07, 18.2, 18.34, 18.47, 18.6, 18.74, 18.87, 19.01, 19.14, 19.28, 19.41, 19.55, 19.69, 19.82, 19.96, 20.1, 20.24, 20.37, 20.51, 20.65, 20.79, 20.93, 21.07, 21.21, 21.35, 21.49, 21.63, 21.78, 21.92, 22.06, 22.2, 22.35, 22.49, 22.63, 22.78, 22.92, 23.07, 23.21, 23.36, 23.5, 23.65, 23.79, 23.94, 24.09, 24.23, 24.38, 24.53, 24.68, 24.83, 24.97, 25.12, 25.27, 25.42, 25.57, 25.72, 25.87, 26.02, 26.18, 26.33, 26.48, 26.63, 26.78, 26.94, 27.09, 27.24, 27.39, 27.55, 27.7, 27.86, 28.01, 28.17, 28.32, 28.48, 28.63, 28.79, 28.95, 29.1, 29.26, 29.42, 29.57, 29.73, 29.89, 30.05, 30.21, 30.36, 30.52, 30.68, 30.84, 31, 31.16, 31.32, 31.48, 31.64, 31.81, 31.97, 32.13, 32.29, 32.45, 32.62, 32.78, 32.94, 33.11, 33.27, 33.43, 33.6, 33.76, 33.93, 34.09, 34.26, 34.42, 34.59, 34.75, 34.92, 35.08, 35.25, 35.42, 35.58, 35.75, 35.92, 36.09, 36.25, 36.42, 36.59, 36.76, 36.93, 37.1, 37.27, 37.44, 37.61, 37.78, 37.95, 38.12, 38.29, 38.46, 38.63, 38.8, 38.97, 39.14, 39.32, 39.49, 39.66, 39.83, 40.01, 40.18, 40.35, 40.53, 40.7, 40.87, 41.05, 41.22, 41.4, 41.57, 41.75, 41.92, 42.1, 42.27, 42.45, 42.63, 42.8, 42.98, 43.16, 43.33, 43.51, 43.69, 43.86, 44.04, 44.22, 44.4, 44.58, 44.75, 44.93, 45.11, 45.29, 45.47, 45.65, 45.83, 46.01, 46.19, 46.37, 46.55, 46.73, 46.91, 47.09, 47.27, 47.45, 47.64, 47.82, 48, 48.18, 48.36, 48.55, 48.73, 48.91, 49.09, 49.28, 49.46, 49.64, 49.83, 50.01, 50.19, 50.38, 50.56, 50.75, 50.93, 51.12]

Try changing this parameter ↗

Type float64Shape 560

Schema & provenance

Source history

Declared at: DIP0_FILE17_TABLE:2
Declaration: column_2 float

datasets.inputspec_ics.data.column_3

column 3

EFFECTIVE VALUE

[6.284e-6, 6.441e-6, 6.602e-6, 6.767e-6, 6.936e-6, 7.11e-6, 7.287e-6, 7.47e-6, 7.657e-6, 7.848e-6, 8.044e-6, 8.246e-6, 8.452e-6, 8.663e-6, 8.88e-6, 9.102e-6, 9.33e-6, 9.564e-6, 9.803e-6, 1.005e-5, 1.03e-5, 1.056e-5, 1.082e-5, 1.109e-5, 1.137e-5, 1.166e-5, 1.195e-5, 1.225e-5, 1.255e-5, 1.287e-5, 1.319e-5, 1.352e-5, 1.386e-5, 1.421e-5, 1.457e-5, 1.493e-5, 1.531e-5, 1.569e-5, 1.609e-5, 1.649e-5, 1.69e-5, 1.733e-5, 1.777e-5, 1.821e-5, 1.867e-5, 1.914e-5, 1.962e-5, 2.012e-5, 2.063e-5, 2.115e-5, 2.168e-5, 2.223e-5, 2.279e-5, 2.337e-5, 2.396e-5, 2.457e-5, 2.519e-5, 2.583e-5, 2.648e-5, 2.716e-5, 2.785e-5, 2.856e-5, 2.928e-5, 3.003e-5, 3.08e-5, 3.158e-5, 3.239e-5, 3.322e-5, 3.407e-5, 3.495e-5, 3.585e-5, 3.677e-5, 3.772e-5, 3.869e-5, 3.969e-5, 4.072e-5, 4.178e-5, 4.286e-5, 4.398e-5, 4.513e-5, 4.631e-5, 4.752e-5, 4.877e-5, 5.005e-5, 5.137e-5, 5.273e-5, 5.413e-5, 5.557e-5, 5.705e-5, 5.857e-5, 6.014e-5, 6.176e-5, 6.342e-5, 6.513e-5, 6.689e-5, 6.871e-5, 7.058e-5, 7.251e-5, 7.45e-5, 7.655e-5, 7.866e-5, 8.084e-5, 8.308e-5, 8.54e-5, 8.779e-5, 9.025e-5, 9.279e-5, 9.542e-5, 9.813e-5, 1.009e-4, 1.038e-4, 1.068e-4, 1.099e-4, 1.131e-4, 1.164e-4, 1.198e-4, 1.233e-4, 1.27e-4, 1.307e-4, 1.346e-4, 1.387e-4, 1.429e-4, 1.472e-4, 1.517e-4, 1.564e-4, 1.613e-4, 1.663e-4, 1.715e-4, 1.77e-4, 1.826e-4, 1.885e-4, 1.946e-4, 2.01e-4, 2.077e-4, 2.147e-4, 2.219e-4, 2.295e-4, 2.375e-4, 2.459e-4, 2.547e-4, 2.64e-4, 2.737e-4, 2.84e-4, 2.949e-4, 3.065e-4, 3.188e-4, 3.318e-4, 3.458e-4, 3.607e-4, 3.766e-4, 3.937e-4, 4.121e-4, 4.32e-4, 4.534e-4, 4.765e-4, 5.015e-4, 5.285e-4, 5.578e-4, 5.896e-4, 6.24e-4, 6.613e-4, 7.016e-4, 7.452e-4, 7.924e-4, 8.432e-4, 8.98e-4, 9.569e-4, 1.02e-3, 1.088e-3, 1.16e-3, 1.237e-3, 1.319e-3, 1.406e-3, 1.497e-3, 1.594e-3, 1.695e-3, 1.802e-3, 1.912e-3, 2.028e-3, 2.147e-3, 2.271e-3, 2.399e-3, 2.53e-3, 2.665e-3, 2.803e-3, 2.945e-3, 3.09e-3, 3.238e-3, 3.389e-3, 3.543e-3, 3.7e-3, 3.861e-3, 4.025e-3, 4.192e-3, 4.364e-3, 4.539e-3, 4.719e-3, 4.903e-3, 5.091e-3, 5.285e-3, 5.484e-3, 5.688e-3, 5.898e-3, 6.114e-3, 6.336e-3, 6.565e-3, 6.801e-3, 7.043e-3, 7.294e-3, 7.552e-3, 7.818e-3, 8.092e-3, 8.375e-3, 8.666e-3, 8.967e-3, 9.278e-3, 9.598e-3, 9.929e-3, 0.01027, 0.01062, 0.01099, 0.01136, 0.01175, 0.01215, 0.01256, 0.01298, 0.01342, 0.01388, 0.01434, 0.01483, 0.01532, 0.01584, 0.01637, 0.01691, 0.01748, 0.01806, 0.01866, 0.01928, 0.01992, 0.02058, 0.02126, 0.02196, 0.02268, 0.02343, 0.0242, 0.02499, 0.02581, 0.02666, 0.02753, 0.02843, 0.02936, 0.03031, 0.0313, 0.03231, 0.03336, 0.03444, 0.03556, 0.03671, 0.03789, 0.03911, 0.04037, 0.04167, 0.04301, 0.04439, 0.04581, 0.04728, 0.04879, 0.05035, 0.05195, 0.05361, 0.05531, 0.05707, 0.05888, 0.06075, 0.06267, 0.06466, 0.0667, 0.06881, 0.07098, 0.07321, 0.07552, 0.07789, 0.08034, 0.08286, 0.08545, 0.08813, 0.09088, 0.09372, 0.09665, 0.09966, 0.1028, 0.106, 0.1093, 0.1126, 0.1161, 0.1197, 0.1234, 0.1273, 0.1312, 0.1352, 0.1394, 0.1437, 0.1481, 0.1527, 0.1574, 0.1622, 0.1672, 0.1723, 0.1776, 0.183, 0.1886, 0.1944, 0.2003, 0.2064, 0.2127, 0.2192, 0.2258, 0.2327, 0.2397, 0.247, 0.2545, 0.2622, 0.2701, 0.2783, 0.2867, 0.2954, 0.3043, 0.3134, 0.3229, 0.3326, 0.3426, 0.3528, 0.3634, 0.3743, 0.3855, 0.3971, 0.409, 0.4212, 0.4338, 0.4467, 0.46, 0.4737, 0.4878, 0.5024, 0.5173, 0.5327, 0.5485, 0.5647, 0.5815, 0.5987, 0.6164, 0.6347, 0.6535, 0.6728, 0.6926, 0.7131, 0.7341, 0.7557, 0.778, 0.8009, 0.8244, 0.8487, 0.8736, 0.8992, 0.9256, 0.9527, 0.9806, 1.009, 1.039, 1.069, 1.101, 1.133, 1.166, 1.2, 1.235, 1.271, 1.308, 1.346, 1.385, 1.425, 1.467, 1.509, 1.553, 1.598, 1.644, 1.692, 1.741, 1.791, 1.843, 1.896, 1.951, 2.007, 2.065, 2.125, 2.186, 2.249, 2.314, 2.381, 2.449, 2.52, 2.592, 2.666, 2.743, 2.822, 2.903, 2.986, 3.071, 3.159, 3.25, 3.343, 3.439, 3.537, 3.638, 3.742, 3.849, 3.958, 4.071, 4.187, 4.307, 4.429, 4.556, 4.685, 4.819, 4.956, 5.096, 5.241, 5.39, 5.543, 5.7, 5.862, 6.028, 6.199, 6.375, 6.555, 6.741, 6.931, 7.127, 7.329, 7.536, 7.749, 7.967, 8.192, 8.423, 8.661, 8.905, 9.156, 9.414, 9.679, 9.952, 10.23, 10.52, 10.82, 11.12, 11.43, 11.75, 12.08, 12.42, 12.77, 13.13, 13.5, 13.87, 14.26, 14.66, 15.07, 15.5, 15.93, 16.37, 16.83, 17.3, 17.79, 18.28, 18.79, 19.32, 19.86, 20.41, 20.98, 21.56, 22.17, 22.78, 23.42, 24.07, 24.74, 25.43, 26.13, 26.86, 27.61, 28.37, 29.16, 29.97, 30.81, 31.66, 32.54, 33.44, 34.37, 35.32, 36.3, 37.31, 38.34, 39.4, 40.49, 41.61, 42.76, 43.95, 45.16, 46.41, 47.69, 49.01, 50.36, 51.75, 53.18, 54.65, 56.16, 57.71, 59.3, 60.93, 62.61, 64.34, 66.11, 67.93, 69.8, 71.72, 73.69, 75.72, 77.8, 79.94, 82.14, 84.4, 86.72, 89.1, 91.55, 94.06, 96.64, 99.29, 102, 104.8, 107.7, 110.6, 113.7, 116.8, 120, 123.3, 126.7, 130.1, 133.7, 137.3, 141.1, 145, 148.9, 153, 157.2, 161.5, 165.9, 170.4, 175.1, 179.8, 184.8, 189.8, 195, 200.3, 205.8]

Try changing this parameter ↗

Type float64Shape 560

Schema & provenance

Source history

Declared at: DIP0_FILE17_TABLE:3
Declaration: column_3 float

datasets.inputspec_ics.data.column_4

column 4

EFFECTIVE VALUE

[2.178e-4, 2.381e-4, 2.602e-4, 2.843e-4, 3.106e-4, 3.392e-4, 3.704e-4, 4.044e-4, 4.413e-4, 4.814e-4, 5.251e-4, 5.726e-4, 6.242e-4, 6.802e-4, 7.41e-4, 8.07e-4, 8.786e-4, 9.563e-4, 1.04e-3, 1.132e-3, 1.23e-3, 1.337e-3, 1.453e-3, 1.578e-3, 1.713e-3, 1.858e-3, 2.016e-3, 2.185e-3, 2.368e-3, 2.565e-3, 2.777e-3, 3.004e-3, 3.249e-3, 3.512e-3, 3.794e-3, 4.096e-3, 4.419e-3, 4.765e-3, 5.135e-3, 5.53e-3, 5.951e-3, 6.399e-3, 6.877e-3, 7.384e-3, 7.923e-3, 8.495e-3, 9.101e-3, 9.743e-3, 0.01042, 0.01114, 0.0119, 0.0127, 0.01355, 0.01444, 0.01538, 0.01637, 0.01741, 0.01851, 0.01967, 0.02089, 0.02217, 0.02353, 0.02495, 0.02645, 0.02803, 0.0297, 0.03146, 0.0333, 0.03525, 0.0373, 0.03946, 0.04174, 0.04413, 0.04666, 0.04931, 0.05211, 0.05505, 0.05814, 0.06139, 0.06481, 0.0684, 0.07217, 0.07614, 0.08029, 0.08466, 0.08924, 0.09403, 0.09906, 0.1043, 0.1098, 0.1156, 0.1217, 0.128, 0.1346, 0.1415, 0.1487, 0.1563, 0.1641, 0.1724, 0.181, 0.1899, 0.1993, 0.2091, 0.2193, 0.2299, 0.2411, 0.2527, 0.2648, 0.2775, 0.2907, 0.3045, 0.3189, 0.334, 0.3497, 0.3662, 0.3834, 0.4015, 0.4204, 0.4401, 0.4609, 0.4826, 0.5055, 0.5294, 0.5547, 0.5812, 0.6092, 0.6387, 0.6698, 0.7028, 0.7377, 0.7747, 0.8141, 0.8559, 0.9006, 0.9484, 0.9997, 1.055, 1.114, 1.178, 1.248, 1.323, 1.405, 1.496, 1.595, 1.704, 1.825, 1.959, 2.109, 2.276, 2.464, 2.675, 2.914, 3.185, 3.493, 3.843, 4.243, 4.7, 5.224, 5.823, 6.512, 7.301, 8.207, 9.246, 10.44, 11.8, 13.36, 15.13, 17.15, 19.43, 22.01, 24.92, 28.17, 31.79, 35.8, 40.22, 45.06, 50.32, 56, 62.09, 68.58, 75.44, 82.63, 90.13, 97.9, 105.9, 114.1, 122.4, 130.9, 139.4, 148, 156.6, 165.2, 173.9, 182.5, 191.2, 199.9, 208.5, 217.2, 226, 234.7, 243.5, 252.4, 261.3, 270.4, 279.5, 288.7, 298.1, 307.5, 317.1, 326.9, 336.8, 346.9, 357.1, 367.5, 378.1, 388.9, 399.9, 411.1, 422.4, 434.1, 445.9, 457.9, 470.2, 482.7, 495.5, 508.4, 521.7, 535.2, 548.9, 562.9, 577.2, 591.7, 606.5, 621.5, 636.9, 652.5, 668.4, 684.6, 701.1, 717.9, 735, 752.4, 770, 788, 806.4, 825, 843.9, 863.2, 882.8, 902.7, 923, 943.6, 964.5, 985.8, 1.007e3, 1.029e3, 1.052e3, 1.074e3, 1.098e3, 1.121e3, 1.145e3, 1.169e3, 1.193e3, 1.218e3, 1.244e3, 1.269e3, 1.295e3, 1.322e3, 1.349e3, 1.376e3, 1.404e3, 1.432e3, 1.46e3, 1.489e3, 1.518e3, 1.548e3, 1.578e3, 1.609e3, 1.64e3, 1.671e3, 1.703e3, 1.735e3, 1.768e3, 1.801e3, 1.835e3, 1.869e3, 1.904e3, 1.939e3, 1.974e3, 2.01e3, 2.046e3, 2.083e3, 2.121e3, 2.158e3, 2.197e3, 2.235e3, 2.275e3, 2.314e3, 2.355e3, 2.395e3, 2.437e3, 2.478e3, 2.52e3, 2.563e3, 2.606e3, 2.65e3, 2.694e3, 2.739e3, 2.784e3, 2.83e3, 2.876e3, 2.923e3, 2.971e3, 3.019e3, 3.067e3, 3.116e3, 3.165e3, 3.216e3, 3.266e3, 3.317e3, 3.369e3, 3.421e3, 3.474e3, 3.527e3, 3.581e3, 3.636e3, 3.691e3, 3.746e3, 3.803e3, 3.859e3, 3.917e3, 3.975e3, 4.033e3, 4.092e3, 4.152e3, 4.212e3, 4.273e3, 4.334e3, 4.396e3, 4.459e3, 4.522e3, 4.586e3, 4.651e3, 4.716e3, 4.781e3, 4.848e3, 4.914e3, 4.982e3, 5.05e3, 5.119e3, 5.188e3, 5.258e3, 5.329e3, 5.4e3, 5.472e3, 5.544e3, 5.617e3, 5.691e3, 5.766e3, 5.841e3, 5.916e3, 5.993e3, 6.07e3, 6.147e3, 6.226e3, 6.305e3, 6.384e3, 6.465e3, 6.546e3, 6.627e3, 6.71e3, 6.793e3, 6.876e3, 6.96e3, 7.045e3, 7.131e3, 7.217e3, 7.304e3, 7.392e3, 7.481e3, 7.57e3, 7.659e3, 7.75e3, 7.841e3, 7.933e3, 8.025e3, 8.119e3, 8.213e3, 8.307e3, 8.403e3, 8.499e3, 8.596e3, 8.693e3, 8.791e3, 8.89e3, 8.99e3, 9.09e3, 9.192e3, 9.293e3, 9.396e3, 9.499e3, 9.603e3, 9.708e3, 9.814e3, 9.92e3, 1.003e4, 1.013e4, 1.024e4, 1.035e4, 1.046e4, 1.057e4, 1.068e4, 1.08e4, 1.091e4, 1.102e4, 1.114e4, 1.125e4, 1.137e4, 1.149e4, 1.16e4, 1.172e4, 1.184e4, 1.196e4, 1.208e4, 1.22e4, 1.232e4, 1.245e4, 1.257e4, 1.27e4, 1.282e4, 1.295e4, 1.307e4, 1.32e4, 1.333e4, 1.346e4, 1.359e4, 1.372e4, 1.385e4, 1.399e4, 1.412e4, 1.425e4, 1.439e4, 1.452e4, 1.466e4, 1.48e4, 1.494e4, 1.507e4, 1.521e4, 1.535e4, 1.55e4, 1.564e4, 1.578e4, 1.593e4, 1.607e4, 1.622e4, 1.636e4, 1.651e4, 1.666e4, 1.681e4, 1.696e4, 1.711e4, 1.726e4, 1.741e4, 1.756e4, 1.772e4, 1.787e4, 1.803e4, 1.818e4, 1.834e4, 1.85e4, 1.866e4, 1.882e4, 1.898e4, 1.914e4, 1.93e4, 1.947e4, 1.963e4, 1.98e4, 1.996e4, 2.013e4, 2.03e4, 2.047e4, 2.064e4, 2.081e4, 2.098e4, 2.115e4, 2.132e4, 2.15e4, 2.167e4, 2.185e4, 2.202e4, 2.22e4, 2.238e4, 2.256e4, 2.274e4, 2.292e4, 2.31e4, 2.329e4, 2.347e4, 2.365e4, 2.384e4, 2.403e4, 2.421e4, 2.44e4, 2.459e4, 2.478e4, 2.497e4, 2.516e4, 2.536e4, 2.555e4, 2.575e4, 2.594e4, 2.614e4, 2.634e4, 2.653e4, 2.673e4, 2.693e4, 2.713e4, 2.734e4, 2.754e4, 2.774e4, 2.795e4, 2.815e4, 2.836e4, 2.857e4, 2.878e4, 2.899e4, 2.92e4, 2.941e4, 2.962e4, 2.983e4, 3.005e4, 3.026e4, 3.048e4, 3.07e4, 3.092e4, 3.114e4, 3.136e4, 3.158e4, 3.18e4, 3.202e4, 3.224e4, 3.247e4, 3.27e4, 3.292e4, 3.315e4, 3.338e4, 3.361e4, 3.384e4, 3.407e4, 3.43e4, 3.454e4, 3.477e4, 3.501e4, 3.524e4, 3.548e4, 3.572e4, 3.596e4, 3.62e4, 3.644e4]

Try changing this parameter ↗

Type float64Shape 560

Schema & provenance

Source history

Declared at: DIP0_FILE17_TABLE:4
Declaration: column_4 float

datasets.inputspec_ics.output_file

output file

EFFECTIVE VALUE"L50n32/inputspec_ics.txt"

Try changing this parameter ↗

Type str

Schema & provenance

Model metadata

Tags: arepo:dataset

Source history

Declared at: tables.dip:3
Declaration: output_file str = "L50n32/inputspec_ics.txt"

datasets.inputspec_ics.preamble

preamble

EFFECTIVE VALUE" 127 100.387"

Try changing this parameter ↗

Type str

Schema & provenance

Source history

Declared at: tables.dip:6
Declaration: preamble str = " 127 100.387"

PARAMETER GROUP

Experiment

1 parameters

experiment.setup.kind

kind

EFFECTIVE VALUE"cosmological_gravity_only"

Selects the scientific setup branch represented by this DIPL environment.

Try changing this parameter ↗

Type str

Schema & provenance

Model metadata

Applied schemas: experiment_settings, experiment_setup_selection
Supplied by schema: experiment_setup_selection
Allowed options: cosmological_star_formation, cosmological_gravity_only, mhd_shock_tube, alfven_wave_1d, cosmo_zoom_gravity_only_3d, current_sheet_2d, galaxy_merger_star_formation_3d, gresho_2d, interacting_blastwaves_1d, isolated_galaxy_collisionless_3d, noh_2d, noh_3d, polytrope_1d_spherical, shocktube_1d, wave_1d, yee_2d
URL: https://arepo-code.org/wp-content/userguide/simtypes.html

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/experiment.dip:6
Declaration: kind str
Modified at: profile.dip:4
Modification: kind = "cosmological_gravity_only"

PARAMETER GROUP

Gravity

16 parameters

gravity.constant_internal

constant internal

EFFECTIVE VALUE0

Gravitational constant in the selected internal code-unit system.

Try changing this parameter ↗

Type float64

Scientific impact An explicit value defines a non-standard or natural unit system; it should not be set for cosmological integrations.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: gravity_settings
Supplied by schema: gravity_settings
Rationale: Zero asks Arepo to derive the physical value from the selected code units.
Scientific impact: An explicit value defines a non-standard or natural unit system; it should not be set for cosmological integrations.
Conflicts with: cosmological integration

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/gravity.dip:123
Declaration: constant_internal float = 0

Notes

Author guidance (advisory; not enforced by these metadata fields):

gravity.domain_decomposition.active_fraction

active fraction

EFFECTIVE VALUE0.01

Active-particle fraction that triggers a domain decomposition.

Try changing this parameter ↗

Type float64

Validation {.} >= 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: gravity_settings, gravity_domain_decomposition
Supplied by schema: gravity_domain_decomposition
Validation condition: {.} >= 0
Performance impact: Larger values avoid domain-decomposition work at synchronization points with few active particles.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/gravity.dip:66
Declaration: active_fraction float = 0.01
Modified at: profile.dip:115
Modification: active_fraction = 0.01

Notes

Author guidance (advisory; not enforced by these metadata fields):

gravity.domain_decomposition.multiple_domains

multiple domains

EFFECTIVE VALUE4

Number of simultaneous domain decompositions.

Try changing this parameter ↗

Type int64

Validation {.} >= 1

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: gravity_settings, gravity_domain_decomposition
Supplied by schema: gravity_domain_decomposition
Validation condition: {.} >= 1
Performance impact: Too few domains can prevent simultaneous CPU and memory load balance; too many increase MPI communication across domain boundaries.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/gravity.dip:48
Declaration: multiple_domains int = 1
Modified at: profile.dip:113
Modification: multiple_domains = 4

Notes

Author guidance (advisory; not enforced by these metadata fields):

gravity.domain_decomposition.top_node_factor

top node factor

EFFECTIVE VALUE2.5

Top-level tree-node allocation factor.

Try changing this parameter ↗

Type float64

Validation {.} > 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: gravity_settings, gravity_domain_decomposition
Supplied by schema: gravity_domain_decomposition
Validation condition: {.} > 0
Performance impact: Higher values enable finer Peano-Hilbert load cuts but increase the replicated top-level-tree memory on every MPI rank.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/gravity.dip:57
Declaration: top_node_factor float = 2.5
Modified at: profile.dip:114
Modification: top_node_factor = 2.5

Notes

Author guidance (advisory; not enforced by these metadata fields):

gravity.force_accuracy.integration

integration

EFFECTIVE VALUE0.012

Integration accuracy tolerance.

Try changing this parameter ↗

Type float64

Scientific impact Sets eta in the gravitational timestep criterion; collisionless cosmological timesteps scale approximately as eta^0.5.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: gravity_settings, gravity_force_accuracy
Supplied by schema: gravity_force_accuracy
Scientific impact: Sets eta in the gravitational timestep criterion; collisionless cosmological timesteps scale approximately as eta^0.5.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/gravity.dip:6
Declaration: integration float = 0.012
Modified at: profile.dip:108
Modification: integration = 0.012

Notes

Author guidance (advisory; not enforced by these metadata fields):

gravity.force_accuracy.opening_angle

opening angle

EFFECTIVE VALUE0.7

Tree opening angle.

Try changing this parameter ↗

Type float64

Scientific impact Controls the initial Barnes-Hut force estimate and all tree forces when the geometric opening criterion is selected.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: gravity_settings, gravity_force_accuracy
Supplied by schema: gravity_force_accuracy
Scientific impact: Controls the initial Barnes-Hut force estimate and all tree forces when the geometric opening criterion is selected.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/gravity.dip:14
Declaration: opening_angle float = 0.7
Modified at: profile.dip:109
Modification: opening_angle = 0.7

Notes

Author guidance (advisory; not enforced by these metadata fields):

gravity.force_accuracy.opening_criterion

opening criterion

EFFECTIVE VALUE1

Tree opening-criterion selector.

Try changing this parameter ↗

Type int64

Scientific impact Selects relative force-error control (1) or the geometric Barnes-Hut criterion (0).

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: gravity_settings, gravity_force_accuracy
Supplied by schema: gravity_force_accuracy
Allowed options: 0, 1
Recommended range: 1 (relative opening criterion), which Arepo normally recommends.
Scientific impact: Selects relative force-error control (1) or the geometric Barnes-Hut criterion (0).

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/gravity.dip:31
Declaration: opening_criterion int = 1
Modified at: profile.dip:111
Modification: opening_criterion = 1

Notes

Author guidance (advisory; not enforced by these metadata fields):

gravity.force_accuracy.relative_force

relative force

EFFECTIVE VALUE2.5e-3

Relative force-error tolerance.

Try changing this parameter ↗

Type float64

Scientific impact Controls tree-force accuracy when using Arepo's relative opening criterion.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: gravity_settings, gravity_force_accuracy
Supplied by schema: gravity_force_accuracy
Scientific impact: Controls tree-force accuracy when using Arepo's relative opening criterion.
Requires: gravity.force_accuracy.opening_criterion=1

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/gravity.dip:22
Declaration: relative_force float = 0.0025
Modified at: profile.dip:110
Modification: relative_force = 0.0025

Notes

Author guidance (advisory; not enforced by these metadata fields):

gravity.hydro.gas_softening_factor

gas softening factor

EFFECTIVE VALUE2.5

Gas-cell softening relative to the assigned base softening.

Try changing this parameter ↗

Type float64

Scientific impact Adaptive gas-cell softening is selected from a logarithmically spaced table after scaling the cell radius by this factor.

Validation {.} > 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: gravity_settings, gravity_hydro_softening
Supplied by schema: gravity_hydro_softening
Validation condition: {.} > 0
Scientific impact: Adaptive gas-cell softening is selected from a logarithmically spaced table after scaling the cell radius by this factor.
Requires: build.mesh.adaptive_hydro_softening

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/gravity.dip:79
Declaration: gas_softening_factor float = 1
Modified at: profile.dip:129
Modification: gas_softening_factor = 2.5

Notes

Author guidance (advisory; not enforced by these metadata fields):

gravity.hydro.minimum_comoving

minimum comoving

EFFECTIVE VALUE1

Minimum comoving adaptive gas softening.

Try changing this parameter ↗

Type float64Units arepo_length

Scientific impact Sets the smallest entry in the adaptive gas-softening table.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: gravity_settings, gravity_hydro_softening
Supplied by schema: gravity_hydro_softening
Scientific impact: Sets the smallest entry in the adaptive gas-softening table.
Requires: build.mesh.adaptive_hydro_softening

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/gravity.dip:88
Declaration: minimum_comoving float = 0 arepo_length
Modified at: profile.dip:130
Modification: minimum_comoving = 1 arepo_length

Notes

Author guidance (advisory; not enforced by these metadata fields):

gravity.hydro.spacing

spacing

EFFECTIVE VALUE1.2

Geometric spacing between adaptive gas softening levels.

Try changing this parameter ↗

Type float64

Scientific impact Sets the spacing of the logarithmic adaptive gas-softening table.

Validation {.} >= 1

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: gravity_settings, gravity_hydro_softening
Supplied by schema: gravity_hydro_softening
Validation condition: {.} >= 1
Recommended range: At least 1; values define the geometric ratio between adjacent adaptive softening levels.
Scientific impact: Sets the spacing of the logarithmic adaptive gas-softening table.
Requires: build.mesh.adaptive_hydro_softening

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/gravity.dip:96
Declaration: spacing float = 1
Modified at: profile.dip:131
Modification: spacing = 1.2

Notes

Author guidance (advisory; not enforced by these metadata fields):

gravity.softenings.comoving[0].length

length

EFFECTIVE VALUE40

Gravity softening length in Arepo code-length units; the schema default is overridden by each setup.

Try changing this parameter ↗

Type float64Units arepo_length

Scientific impact A softening family may be shared by multiple particle types; its comoving and maximum physical values control short-range gravitational resolution.

Validation {.} > 0 arepo_length

Schema & provenance

Model metadata

Applied schemas: gravity_settings, gravity_softening_length
Supplied by schema: gravity_softening_length
Validation condition: {.} > 0 arepo_length
Scientific impact: A softening family may be shared by multiple particle types; its comoving and maximum physical values control short-range gravitational resolution.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/gravity.dip:111
Declaration: length float = 0.1 arepo_length
Modified at: profile.dip:119
Modification: length = 40 arepo_length

Notes

Author guidance (advisory; not enforced by these metadata fields):

gravity.softenings.comoving[1].length

length

EFFECTIVE VALUE40

Gravity softening length in Arepo code-length units; the schema default is overridden by each setup.

Try changing this parameter ↗

Type float64Units arepo_length

Scientific impact A softening family may be shared by multiple particle types; its comoving and maximum physical values control short-range gravitational resolution.

Validation {.} > 0 arepo_length

Schema & provenance

Model metadata

Applied schemas: gravity_settings, gravity_softening_length
Supplied by schema: gravity_softening_length
Validation condition: {.} > 0 arepo_length
Scientific impact: A softening family may be shared by multiple particle types; its comoving and maximum physical values control short-range gravitational resolution.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/gravity.dip:111
Declaration: length float = 0.1 arepo_length
Modified at: profile.dip:121
Modification: length = 40 arepo_length

Notes

Author guidance (advisory; not enforced by these metadata fields):

gravity.softenings.particle_type_map

particle type map

EFFECTIVE VALUE[0, 1, 1, 1, 1, 1]

Try changing this parameter ↗

Type int32Shape 6

Schema & provenance

Model metadata

Applied schemas: gravity_settings

Source history

Declared at: profile.dip:127
Declaration: particle_type_map int[6] = [0,1,1,1,1,1]

gravity.softenings.physical_maximum[0].length

length

EFFECTIVE VALUE20

Gravity softening length in Arepo code-length units; the schema default is overridden by each setup.

Try changing this parameter ↗

Type float64Units arepo_length

Scientific impact A softening family may be shared by multiple particle types; its comoving and maximum physical values control short-range gravitational resolution.

Validation {.} > 0 arepo_length

Schema & provenance

Model metadata

Applied schemas: gravity_settings, gravity_softening_length
Supplied by schema: gravity_softening_length
Validation condition: {.} > 0 arepo_length
Scientific impact: A softening family may be shared by multiple particle types; its comoving and maximum physical values control short-range gravitational resolution.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/gravity.dip:111
Declaration: length float = 0.1 arepo_length
Modified at: profile.dip:124
Modification: length = 20 arepo_length

Notes

Author guidance (advisory; not enforced by these metadata fields):

gravity.softenings.physical_maximum[1].length

length

EFFECTIVE VALUE20

Gravity softening length in Arepo code-length units; the schema default is overridden by each setup.

Try changing this parameter ↗

Type float64Units arepo_length

Scientific impact A softening family may be shared by multiple particle types; its comoving and maximum physical values control short-range gravitational resolution.

Validation {.} > 0 arepo_length

Schema & provenance

Model metadata

Applied schemas: gravity_settings, gravity_softening_length
Supplied by schema: gravity_softening_length
Validation condition: {.} > 0 arepo_length
Scientific impact: A softening family may be shared by multiple particle types; its comoving and maximum physical values control short-range gravitational resolution.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/gravity.dip:111
Declaration: length float = 0.1 arepo_length
Modified at: profile.dip:126
Modification: length = 20 arepo_length

Notes

Author guidance (advisory; not enforced by these metadata fields):

PARAMETER GROUP

Hydrodynamics

9 parameters

hydrodynamics.courant_factor

courant factor

EFFECTIVE VALUE0.3

Courant-Friedrichs-Lewy timestep factor.

Try changing this parameter ↗

Type float64

Scientific impact Multiplies the cell-wise CFL condition and therefore directly limits hydrodynamical timesteps.

Validation {.} >= 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: hydrodynamics_settings
Supplied by schema: hydrodynamics_settings
Validation condition: {.} >= 0
Scientific impact: Multiplies the cell-wise CFL condition and therefore directly limits hydrodynamical timesteps.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/hydrodynamics.dip:6
Declaration: courant_factor float = 0.3
Modified at: profile.dip:134
Modification: courant_factor = 0.3

Notes

Author guidance (advisory; not enforced by these metadata fields):

hydrodynamics.initial_gas_temperature

initial gas temperature

EFFECTIVE VALUE244.8

Initial gas temperature used where initial conditions lack it.

Try changing this parameter ↗

Type float64Units K

Scientific impact Applied only when positive and when the IC gas temperature is zero; the assumed ionization state changes above 10^4 K.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: hydrodynamics_settings
Supplied by schema: hydrodynamics_settings
Scientific impact: Applied only when positive and when the IC gas temperature is zero; the assumed ionization state changes above 10^4 K.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/hydrodynamics.dip:14
Declaration: initial_gas_temperature float = 0 K
Modified at: profile.dip:135
Modification: initial_gas_temperature = 244.8095 K

Notes

Author guidance (advisory; not enforced by these metadata fields):

hydrodynamics.internal_energy_density_limit

internal energy density limit

EFFECTIVE VALUE0

Density threshold for an internal-energy limit.

Try changing this parameter ↗

Type float64Units arepo_density

Scientific impact Activates the associated internal-energy floor below this density threshold.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: hydrodynamics_settings
Supplied by schema: hydrodynamics_settings
Scientific impact: Activates the associated internal-energy floor below this density threshold.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/hydrodynamics.dip:35
Declaration: internal_energy_density_limit float = 0 arepo_density
Modified at: profile.dip:138
Modification: internal_energy_density_limit = 0 arepo_density

Notes

Author guidance (advisory; not enforced by these metadata fields):

hydrodynamics.internal_energy_floor

internal energy floor

EFFECTIVE VALUE0

Internal-energy floor applied below the configured density threshold.

Try changing this parameter ↗

Type float64Units arepo_specific_energy

Scientific impact Prevents gas below the configured density threshold from cooling below this internal energy.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: hydrodynamics_settings
Supplied by schema: hydrodynamics_settings
Scientific impact: Prevents gas below the configured density threshold from cooling below this internal energy.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/hydrodynamics.dip:44
Declaration: internal_energy_floor float = 0 arepo_specific_energy
Modified at: profile.dip:139
Modification: internal_energy_floor = 0 arepo_specific_energy

Notes

Author guidance (advisory; not enforced by these metadata fields):

hydrodynamics.maximum_neighbor_deviation

maximum neighbor deviation

EFFECTIVE VALUE4

Permitted deviation from the desired neighbor count.

Try changing this parameter ↗

Type int64

Validation {.} >= 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: hydrodynamics_settings
Supplied by schema: hydrodynamics_settings
Validation condition: {.} >= 0
Performance impact: A larger tolerance reduces iterations required to determine the correct initial neighbour radius.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/hydrodynamics.dip:68
Declaration: maximum_neighbor_deviation int = 4
Modified at: profile.dip:142
Modification: maximum_neighbor_deviation = 4

Notes

Author guidance (advisory; not enforced by these metadata fields):

hydrodynamics.minimum_gas_temperature

minimum gas temperature

EFFECTIVE VALUE5

Temperature floor applied to gas.

Try changing this parameter ↗

Type float64Units K

Scientific impact Sets a thermodynamic floor for cooling physics.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: hydrodynamics_settings
Supplied by schema: hydrodynamics_settings
Scientific impact: Sets a thermodynamic floor for cooling physics.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/hydrodynamics.dip:21
Declaration: minimum_gas_temperature float = 0 K
Modified at: profile.dip:136
Modification: minimum_gas_temperature = 5 K

Notes

Author guidance (advisory; not enforced by these metadata fields):

hydrodynamics.minimum_specific_energy

minimum specific energy

EFFECTIVE VALUE0

Minimum specific internal energy.

Try changing this parameter ↗

Type float64Units arepo_specific_energy

Scientific impact Provides a global lower bound on the gas specific internal energy.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: hydrodynamics_settings
Supplied by schema: hydrodynamics_settings
Scientific impact: Provides a global lower bound on the gas specific internal energy.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/hydrodynamics.dip:53
Declaration: minimum_specific_energy float = 0 arepo_specific_energy
Modified at: profile.dip:140
Modification: minimum_specific_energy = 0 arepo_specific_energy

Notes

Author guidance (advisory; not enforced by these metadata fields):

hydrodynamics.minimum_startup_density

minimum startup density

EFFECTIVE VALUE1e-20

Minimum density imposed while starting the run.

Try changing this parameter ↗

Type float64Units arepo_density

Scientific impact All gas cells below this density immediately after IC loading are raised to this value.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: hydrodynamics_settings
Supplied by schema: hydrodynamics_settings
Scientific impact: All gas cells below this density immediately after IC loading are raised to this value.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/hydrodynamics.dip:28
Declaration: minimum_startup_density float = 0 arepo_density
Modified at: profile.dip:137
Modification: minimum_startup_density = 1e-20 arepo_density

Notes

Author guidance (advisory; not enforced by these metadata fields):

hydrodynamics.target_neighbors

target neighbors

EFFECTIVE VALUE64

Desired hydrodynamic neighbor count.

Try changing this parameter ↗

Type int64

Scientific impact Sets the target number of nearest neighbours used for the initial gas-cell density/size estimate.

Validation {.} > 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: hydrodynamics_settings
Supplied by schema: hydrodynamics_settings
Validation condition: {.} > 0
Scientific impact: Sets the target number of nearest neighbours used for the initial gas-cell density/size estimate.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/hydrodynamics.dip:60
Declaration: target_neighbors int = 64
Modified at: profile.dip:141
Modification: target_neighbors = 64

Notes

Author guidance (advisory; not enforced by these metadata fields):

PARAMETER GROUP

Input

2 parameters

input.initial_conditions.format

format

EFFECTIVE VALUE1

Serialization format used to read the initial conditions.

Try changing this parameter ↗

Type int64

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: input_settings, initial_conditions_settings
Supplied by schema: initial_conditions_settings
Allowed options: 1, 2, 3
Recommended range: 3 (HDF5), unless a legacy binary format is specifically required.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/input.dip:12
Declaration: format int
Modified at: profile.dip:52
Modification: format = 1

Notes

Author guidance (advisory; not enforced by these metadata fields):

input.initial_conditions.path

path

EFFECTIVE VALUE"./ics"

Initial-condition file path, without an automatically appended format suffix.

Try changing this parameter ↗

Type str

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: input_settings, initial_conditions_settings
Supplied by schema: initial_conditions_settings
Rationale: For multi-file ICs specify the basename without the trailing file number; for HDF5 omit the .hdf5 suffix because Arepo appends it.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/input.dip:5
Declaration: path str
Modified at: profile.dip:51
Modification: path = "./ics"

Notes

Author guidance (advisory; not enforced by these metadata fields):

PARAMETER GROUP

Mesh

7 parameters

mesh.refinement.derefinement_criterion

derefinement criterion

EFFECTIVE VALUE1

Arepo derefinement-criterion selector.

Try changing this parameter ↗

Type int64

Scientific impact Selects the algorithm governing when gas cells are derefined.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: mesh_settings, mesh_refinement
Supplied by schema: mesh_refinement
Scientific impact: Selects the algorithm governing when gas cells are derefined.
Requires: build.mesh.refinement

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/mesh.dip:64
Declaration: derefinement_criterion int = 1

Notes

Author guidance (advisory; not enforced by these metadata fields):

mesh.refinement.reference_gas_mass

reference gas mass

EFFECTIVE VALUE0

Reference gas-cell mass for refinement.

Try changing this parameter ↗

Type float64Units arepo_mass

Scientific impact Defines the mass scale around which the default refinement and derefinement maintain gas-cell resolution.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: mesh_settings, mesh_refinement
Supplied by schema: mesh_refinement
Scientific impact: Defines the mass scale around which the default refinement and derefinement maintain gas-cell resolution.
Requires: build.mesh.refinement

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/mesh.dip:38
Declaration: reference_gas_mass float = 0 arepo_mass

Notes

Author guidance (advisory; not enforced by these metadata fields):

mesh.refinement.refinement_criterion

refinement criterion

EFFECTIVE VALUE1

Arepo refinement-criterion selector.

Try changing this parameter ↗

Type int64

Scientific impact Selects the algorithm governing when gas cells are refined.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: mesh_settings, mesh_refinement
Supplied by schema: mesh_refinement
Scientific impact: Selects the algorithm governing when gas cells are refined.
Requires: build.mesh.refinement

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/mesh.dip:55
Declaration: refinement_criterion int = 1

Notes

Author guidance (advisory; not enforced by these metadata fields):

mesh.refinement.target_gas_mass_factor

target gas mass factor

EFFECTIVE VALUE1

Target gas-mass multiplier for refinement.

Try changing this parameter ↗

Type float64

Scientific impact Scales the reference gas-cell mass used by the refinement target.

Validation {.} > 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: mesh_settings, mesh_refinement
Supplied by schema: mesh_refinement
Validation condition: {.} > 0
Scientific impact: Scales the reference gas-cell mass used by the refinement target.
Requires: build.mesh.refinement

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/mesh.dip:46
Declaration: target_gas_mass_factor float = 1

Notes

Author guidance (advisory; not enforced by these metadata fields):

mesh.regularization.maximum_face_angle_factor

maximum face angle factor

EFFECTIVE VALUE2.25

Maximum-face-angle roundness threshold.

Try changing this parameter ↗

Type float64

Scientific impact Elongated cells above the face-angle thresholds are not refined and their mesh generators are moved away from pure Lagrangian motion.

Validation {.} > 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: mesh_settings, mesh_regularization
Supplied by schema: mesh_regularization
Validation condition: {.} > 0
Scientific impact: Elongated cells above the face-angle thresholds are not refined and their mesh generators are moved away from pure Lagrangian motion.
Requires: build.mesh.face_angle_regularization
Conflicts with: build.geometry.static_mesh

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/mesh.dip:13
Declaration: maximum_face_angle_factor float = 2.25

Notes

Author guidance (advisory; not enforced by these metadata fields):

mesh.regularization.shaping_factor

shaping factor

EFFECTIVE VALUE1

Centre-of-mass mesh-roundness threshold; zero disables this criterion.

Try changing this parameter ↗

Type float64

Scientific impact Large centre-of-mass offsets suppress refinement and add mesh-generator motion to restore roundness.

Validation {.} >= 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: mesh_settings, mesh_regularization
Supplied by schema: mesh_regularization
Validation condition: {.} >= 0
Scientific impact: Large centre-of-mass offsets suppress refinement and add mesh-generator motion to restore roundness.
Conflicts with: build.geometry.static_mesh, build.mesh.face_angle_regularization

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/mesh.dip:24
Declaration: shaping_factor float = 1
Modified at: profile.dip:147
Modification: shaping_factor = 1.0

Notes

Author guidance (advisory; not enforced by these metadata fields):

mesh.regularization.shaping_speed

shaping speed

EFFECTIVE VALUE0.5

Speed of mesh regularization.

Try changing this parameter ↗

Type float64

Validation {.} >= 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: mesh_settings, mesh_regularization
Supplied by schema: mesh_regularization
Validation condition: {.} >= 0
Performance impact: Controls the strength of mesh-generator motion used to restore cell roundness.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/mesh.dip:5
Declaration: shaping_speed float = 0.5
Modified at: profile.dip:146
Modification: shaping_speed = 0.5

Notes

Author guidance (advisory; not enforced by these metadata fields):

PARAMETER GROUP

Output

7 parameters

output.schedule.enabled

enabled

EFFECTIVE VALUEtrue

Whether Arepo reads an explicit output-time schedule file.

Try changing this parameter ↗

Type bool

Scientific impact Selects explicitly chosen output epochs instead of the regular cadence defined by simulation.time.first_snapshot and simulation.time.snapshot_interval.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: output_settings, output_schedule_settings
Supplied by schema: output_schedule_settings
Scientific impact: Selects explicitly chosen output epochs instead of the regular cadence defined by simulation.time.first_snapshot and simulation.time.snapshot_interval.
Requires: output.schedule.filename

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/output.dip:6
Declaration: enabled bool = false
Modified at: profile.dip:56
Modification: enabled = true

Notes

Author guidance (advisory; not enforced by these metadata fields):

output.schedule.filename

filename

EFFECTIVE VALUE"./output_list.txt"

Path to the output-time schedule file when scheduling is enabled.

Try changing this parameter ↗

Type str

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: output_settings, output_schedule_settings
Supplied by schema: output_schedule_settings

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/output.dip:15
Declaration: filename str
Modified at: profile.dip:57
Modification: filename = "./output_list.txt"

output.snapshots.base_name

base name

EFFECTIVE VALUE"snap"

Prefix used for snapshot filenames.

Try changing this parameter ↗

Type str

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: output_settings, snapshot_settings
Supplied by schema: snapshot_settings

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/snapshots.dip:11
Declaration: base_name str
Modified at: profile.dip:60
Modification: base_name = "snap"

output.snapshots.directory

files

EFFECTIVE VALUE1

Number of files produced for each snapshot.

Try changing this parameter ↗

Type int64

Validation {.} >= 1

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: output_settings, snapshot_settings
Supplied by schema: snapshot_settings
Validation condition: {.} >= 1
Recommended range: 1 through the number of MPI ranks.
Performance impact: Splitting a snapshot can improve I/O throughput and avoid very large files, depending on the filesystem.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/snapshots.dip:29
Declaration: files int
Modified at: profile.dip:62
Modification: files = 1

Notes

Author guidance (advisory; not enforced by these metadata fields):

output.snapshots.format

format

EFFECTIVE VALUE3

Arepo snapshot serialization format.

Try changing this parameter ↗

Type int64

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: output_settings, snapshot_settings
Supplied by schema: snapshot_settings
Allowed options: 1, 2, 3
Recommended range: 3 (HDF5), unless a legacy binary format is specifically required.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/snapshots.dip:17
Declaration: format int
Modified at: profile.dip:61
Modification: format = 3

Notes

Author guidance (advisory; not enforced by these metadata fields):

output.snapshots.parallel_files

parallel files

EFFECTIVE VALUE1

Maximum number of snapshot files written concurrently.

Try changing this parameter ↗

Type int64

Validation {.} >= 1

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: output_settings, snapshot_settings
Supplied by schema: snapshot_settings
Validation condition: {.} >= 1
Recommended range: No greater than the number of MPI ranks.
Performance impact: Restricting concurrency can protect heavily used filesystems on large runs, at the cost of slower I/O.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/snapshots.dip:38
Declaration: parallel_files int
Modified at: profile.dip:63
Modification: parallel_files = 1

Notes

Author guidance (advisory; not enforced by these metadata fields):

PARAMETER GROUP

Output Schedule

2 parameters

output_schedule.scale_factor

scale factor

EFFECTIVE VALUE[0.5, 1]

Try changing this parameter ↗

Type float64Shape 2

Schema & provenance

Source history

Declared at: DIP0_FILE16_TABLE:1
Declaration: scale_factor float

output_schedule.write_flag

write flag

EFFECTIVE VALUE[1, 1]

Try changing this parameter ↗

Type int32Shape 2

Schema & provenance

Source history

Declared at: DIP0_FILE16_TABLE:2
Declaration: write_flag int

PARAMETER GROUP

Resources

6 parameters

resources.execution.resubmit

resubmit

EFFECTIVE VALUEfalse

Whether Arepo should submit a continuation job after reaching its time limit.

Try changing this parameter ↗

Type bool

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: resources_settings, execution_resources
Supplied by schema: execution_resources
Requires: resources.execution.resubmit_command

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/resources.dip:48
Declaration: resubmit bool = false
Modified at: profile.dip:73
Modification: resubmit = false

Notes

Author guidance (advisory; not enforced by these metadata fields):

resources.execution.resubmit_command

resubmit command

EFFECTIVE VALUE"my-scriptfile"

Command used to submit the continuation job when resubmission is enabled.

Try changing this parameter ↗

Type str

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: resources_settings, execution_resources
Supplied by schema: execution_resources

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/resources.dip:55
Declaration: resubmit_command str
Modified at: profile.dip:74
Modification: resubmit_command = "my-scriptfile"

resources.memory.per_rank

per rank

EFFECTIVE VALUE2500

Memory allocated to each MPI rank, in MiB.

Try changing this parameter ↗

Type int64

Validation {.} > 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: resources_settings, memory_resources
Supplied by schema: memory_resources
Validation condition: {.} > 0
Recommended range: Up to about 95% of physical memory available per MPI rank.
Performance impact: Arepo reserves one contiguous pool of this size at startup; insufficient space terminates the run, while excessive allocation leaves too little room for MPI and the operating system.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/resources.dip:5
Declaration: per_rank int
Modified at: profile.dip:67
Modification: per_rank = 2500

Notes

Author guidance (advisory; not enforced by these metadata fields):

resources.wall_clock.limit

limit

EFFECTIVE VALUE9.3e4

Wall-clock limit before Arepo stops cleanly for restart.

Try changing this parameter ↗

Type float64Units s

Validation {.} > 0 s

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: resources_settings, wall_clock_resources
Supplied by schema: wall_clock_resources
Validation condition: {.} > 0 s
Rationale: Arepo begins clean termination and restart-file writing after 85% of this limit, reserving the remaining time for the final timestep and I/O.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/resources.dip:20
Declaration: limit float s
Modified at: profile.dip:69
Modification: limit = 93000 s

Notes

Author guidance (advisory; not enforced by these metadata fields):

resources.wall_clock.log_flush_interval

log flush interval

EFFECTIVE VALUE120

Interval between explicit log-file flushes; zero leaves this disabled.

Try changing this parameter ↗

Type float64Units s

Validation {.} >= 0 s

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: resources_settings, wall_clock_resources
Supplied by schema: wall_clock_resources
Validation condition: {.} >= 0 s
Performance impact: A shorter interval improves log durability but increases filesystem activity.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/resources.dip:36
Declaration: log_flush_interval float s
Modified at: profile.dip:71
Modification: log_flush_interval = 120 s

Notes

Author guidance (advisory; not enforced by these metadata fields):

resources.wall_clock.restart_interval

restart interval

EFFECTIVE VALUE1.2e4

Interval between restart-file writes.

Try changing this parameter ↗

Type float64Units s

Validation {.} >= 0 s

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: resources_settings, wall_clock_resources
Supplied by schema: wall_clock_resources
Validation condition: {.} >= 0 s
Performance impact: Shorter intervals reduce work lost after an unexpected interruption but increase restart I/O.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/resources.dip:28
Declaration: restart_interval float s
Modified at: profile.dip:70
Modification: restart_interval = 12000 s

Notes

Author guidance (advisory; not enforced by these metadata fields):

PARAMETER GROUP

Simulation

13 parameters

simulation.domain.boundary

boundary

EFFECTIVE VALUE"periodic"

Whether the simulation domain has periodic boundaries.

Try changing this parameter ↗

Type str

Scientific impact Controls gravitational boundary conditions; hydrodynamic boundaries are compile-time directional settings.

Schema & provenance

Model metadata

Applied schemas: simulation_settings, simulation_domain
Supplied by schema: simulation_domain
Allowed options: periodic, non_periodic
Scientific impact: Controls gravitational boundary conditions; hydrodynamic boundaries are compile-time directional settings.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/simulation.dip:17
Declaration: boundary str
Modified at: profile.dip:78
Modification: boundary = "periodic"

Notes

Author guidance (advisory; not enforced by these metadata fields):

simulation.domain.box.size

size

EFFECTIVE VALUE5e4

Simulation-box edge length in the selected Arepo code-length unit.

Try changing this parameter ↗

Type float64Units arepo_length

Scientific impact Initial-condition coordinates normally must lie within [0, BoxSize] in every dimension.

Validation {.} > 0 arepo_length

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: simulation_settings, simulation_domain, simulation_box
Supplied by schema: simulation_box
Validation condition: {.} > 0 arepo_length
Scientific impact: Initial-condition coordinates normally must lie within [0, BoxSize] in every dimension.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/simulation.dip:5
Declaration: size float arepo_length
Modified at: profile.dip:80
Modification: size = 50000 arepo_length

Notes

Author guidance (advisory; not enforced by these metadata fields):

simulation.time.begin

begin

EFFECTIVE VALUE7.812e-3

Initial integration coordinate; often derived from the initial redshift.

Try changing this parameter ↗

Type float64

Scientific impact For a cosmological run this is the initial scale factor.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: simulation_settings, simulation_time
Supplied by schema: simulation_time
Expression: 1 / ( 1 + {?simulation.time.initial_redshift} )
Reads during evaluation: ?simulation.time.initial_redshift
Scientific impact: For a cosmological run this is the initial scale factor.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/simulation.dip:51
Declaration: begin float
Modified at: profile.dip:85
Modification: begin float = ( 1 / ( 1 + {?simulation.time.initial_redshift} ) )

Notes

Author guidance (advisory; not enforced by these metadata fields):

simulation.time.coordinate

coordinate

EFFECTIVE VALUE"scale_factor"

Independent coordinate used by the time integrator.

Try changing this parameter ↗

Type str

Scientific impact With scale_factor, Arepo evolves an expanding cosmology and uses scale factor as its time coordinate; linear uses Newtonian physical coordinates.

Schema & provenance

Model metadata

Applied schemas: simulation_settings, simulation_time
Supplied by schema: simulation_time
Allowed options: scale_factor, linear
Scientific impact: With scale_factor, Arepo evolves an expanding cosmology and uses scale factor as its time coordinate; linear uses Newtonian physical coordinates.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/simulation.dip:35
Declaration: coordinate str
Modified at: profile.dip:82
Modification: coordinate = "scale_factor"

Notes

Author guidance (advisory; not enforced by these metadata fields):

simulation.time.end

end

EFFECTIVE VALUE1

Final integration coordinate.

Try changing this parameter ↗

Type float64

Scientific impact For a cosmological run this is the final scale factor.

Validation {.} >= {?simulation.time.begin}

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: simulation_settings, simulation_time
Supplied by schema: simulation_time
Validation condition: {.} >= {?simulation.time.begin}
Expression: 1 / ( 1 + {?simulation.time.final_redshift} )
Reads during evaluation: ?simulation.time.final_redshift
Scientific impact: For a cosmological run this is the final scale factor.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/simulation.dip:58
Declaration: end float
Modified at: profile.dip:86
Modification: end float = ( 1 / ( 1 + {?simulation.time.final_redshift} ) )

Notes

Author guidance (advisory; not enforced by these metadata fields):

simulation.time.final_redshift

final redshift

EFFECTIVE VALUE0

Redshift at which a cosmological integration ends.

Try changing this parameter ↗

Type float64

Schema & provenance

Model metadata

Applied schemas: simulation_settings, simulation_time
Supplied by schema: simulation_time
Used by: cosmology.final_redshift, simulation.time.end

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/simulation.dip:48
Declaration: final_redshift float
Modified at: profile.dip:84
Modification: final_redshift = 0

simulation.time.first_snapshot

first snapshot

EFFECTIVE VALUE0

First regularly spaced snapshot time when no output schedule is used.

Try changing this parameter ↗

Type float64

Scientific impact For cosmological simulations this is the first output scale factor.

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: simulation_settings, simulation_time
Supplied by schema: simulation_time
Scientific impact: For cosmological simulations this is the first output scale factor.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/simulation.dip:94
Declaration: first_snapshot float
Modified at: profile.dip:90
Modification: first_snapshot = 0

Notes

Author guidance (advisory; not enforced by these metadata fields):

simulation.time.initial_redshift

initial redshift

EFFECTIVE VALUE127

Redshift represented by the initial conditions.

Try changing this parameter ↗

Type float64

Schema & provenance

Model metadata

Applied schemas: simulation_settings, simulation_time
Supplied by schema: simulation_time
Used by: cosmology.initial_redshift, simulation.time.begin

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/simulation.dip:45
Declaration: initial_redshift float
Modified at: profile.dip:83
Modification: initial_redshift = 127

simulation.time.maximum_step

maximum step

EFFECTIVE VALUE5e-3

Maximum permitted integration step.

Try changing this parameter ↗

Type float64

Scientific impact For comoving integrations this caps dln(a).

Validation {.} > 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: simulation_settings, simulation_time
Supplied by schema: simulation_time
Validation condition: {.} > 0
Rationale: Protects particles with very small accelerations from unphysically large timesteps.
Scientific impact: For comoving integrations this caps dln(a).

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/simulation.dip:66
Declaration: maximum_step float
Modified at: profile.dip:87
Modification: maximum_step = 0.005

Notes

Author guidance (advisory; not enforced by these metadata fields):

simulation.time.minimum_step

minimum step

EFFECTIVE VALUE2e-9

Minimum permitted integration step; zero delegates the lower limit to Arepo.

Try changing this parameter ↗

Type float64

Scientific impact A requested smaller step normally stops Arepo; NOSTOP_WHEN_BELOW_MINTIMESTEP instead clamps it to this value.

Validation {.} >= 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: simulation_settings, simulation_time
Supplied by schema: simulation_time
Validation condition: {.} >= 0
Scientific impact: A requested smaller step normally stops Arepo; NOSTOP_WHEN_BELOW_MINTIMESTEP instead clamps it to this value.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/simulation.dip:76
Declaration: minimum_step float
Modified at: profile.dip:88
Modification: minimum_step = 2e-9

Notes

Author guidance (advisory; not enforced by these metadata fields):

simulation.time.snapshot_interval

snapshot interval

EFFECTIVE VALUE0

Spacing of regular snapshots when no output schedule is used.

Try changing this parameter ↗

Type float64

Scientific impact Spacing is logarithmic in scale factor for cosmological runs and linear in time otherwise.

Validation {.} >= 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: simulation_settings, simulation_time
Supplied by schema: simulation_time
Validation condition: {.} >= 0
Scientific impact: Spacing is logarithmic in scale factor for cosmological runs and linear in time otherwise.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/simulation.dip:101
Declaration: snapshot_interval float
Modified at: profile.dip:91
Modification: snapshot_interval = 0

Notes

Author guidance (advisory; not enforced by these metadata fields):

simulation.time.statistics_interval

statistics interval

EFFECTIVE VALUE0.01

Interval between time-statistics reports.

Try changing this parameter ↗

Type float64

Validation {.} >= 0

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: simulation_settings, simulation_time
Supplied by schema: simulation_time
Validation condition: {.} >= 0
Performance impact: More frequent measurements increase diagnostic I/O; gravitational potential energy additionally requires build.gravity.evaluate_potential.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/simulation.dip:85
Declaration: statistics_interval float
Modified at: profile.dip:89
Modification: statistics_interval = 0.01

Notes

Author guidance (advisory; not enforced by these metadata fields):

simulation.time.timestep_criterion

timestep criterion

EFFECTIVE VALUE0

Global time-step criterion used by Arepo.

Try changing this parameter ↗

Type int64

Schema & provenance

Model metadata

Tags: arepo:param
Applied schemas: simulation_settings, simulation_time
Supplied by schema: simulation_time
Allowed options: 0, 1
Recommended range: 0; this is the only criterion currently supported by Arepo.

Source history

Declared at: projects/arepo/dipl/examples/cosmological_gravity_only/../../profiles/schemas/simulation.dip:109
Declaration: timestep_criterion int
Modified at: profile.dip:92
Modification: timestep_criterion = 0

Notes

Author guidance (advisory; not enforced by these metadata fields):

Generated from SNT's Brief++ JSON document for projects/arepo/dipl/examples/cosmological_gravity_only/DIPfile. Version: 0.9.3. The parameter values describe this bundled example; inspect a run's environment.diph5 to see overridden values.