Input Parameters
Most Parthenon behavior is controlled via an input file, generally named
parthinput.<problem-name>. Parameters in this file take the form
param = value, with a particular type for each parameter set in the
Parthenon code.
Parameters are split into blocks, denoted by bracketed names
(<blockname>). All Parthenon-specific parameters are in blocks named
<parthenon/x>. Below is an incomplete list of some parameters
Parthenon accepts, split by block.
<parthenon/job>
General parthenon options such as problem name and parameter handling.
Option |
Default |
Type |
Description |
|---|---|---|---|
name
archive_parameters
|
none
false
|
string
string
|
Name of this problem or initialization, prefixed to output files.
Produce a parameter file containing all parameters known to Parthenon. Set to true for an output file named parthinput.archive. Set to timestamp for a file with a name containing a timestamp.
|
<parthenon/time>
Options related to time-stepping and printing of diagnostic data.
Option |
Default |
Type |
Description |
|---|---|---|---|
tlim
nlim
perf_cycle_offset
ncycle_out
ncycle_out_mesh
ncrecv_bdry_buf_timeout_sec
|
none
-1
0
1
0
-1.0
|
float
int
int
int
int
Real
|
Stop criterion on simulation time.
Stop criterion on total number of steps taken. Ignored if < 0.
Skip the first N cycles when calculating the final performance (e.g., zone-cycles/wall_second). Allows to hide the initialization overhead in Parthenon, which usually takes place in the first cycles when Containers are allocated, etc.
Number of cycles between short diagnostic output to standard out containing, e.g., current time, dt, zone-update/wsec. Default: 1 (i.e, every cycle).
Number of cycles between printing the mesh structure (e.g., total number of MeshBlocks and number of MeshBlocks per level) to standard out. Use a negative number to also print every time the mesh was modified. Default: 0 (i.e, off).
Timeout in seconds for the cell_centered_bvars::ReceiveBoundaryBuffers tasks. Disabed (negative) by default. Typically no need in production runs. Useful for debugging MPI calls.
|
<parthenon/mesh>
See the Adaptive Mesh Refinement documentation for details of the required
parameters in <parthenon/mesh> and <parthenon/meshblock>.
Option |
Default |
Type |
Description |
|---|---|---|---|
nghost |
2 |
int |
Number of ghost cells for each mesh block on each side. |
<parthenon/sparse>
See the Sparse implementation documentation for details.
Option |
Default |
Type |
Description |
|---|---|---|---|
enable_sparse
alloc_threshold
dealloc_threshold
dealloc_count
|
true
1e-12
1e-14
5
|
bool
float
float
int
|
If set to false, sparse variables will always be allocated, see also Run-time
Global (for all sparse variables) threshold to trigger allocation of a variable if cells in the receiving ghost cells are above this value.
Global (for all sparse variables) threshold to trigger deallocation if all active cells of a variable in a block are below this value.
First deallocate a sparse variable if the dealloc_threshold has been met in this number of consecutive cycles.
|