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.
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 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 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.
|