polaris.ocean.tasks.single_column.forward.Forward

class polaris.ocean.tasks.single_column.forward.Forward(component, name='forward', subdir=None, indir=None, ntasks=None, min_tasks=None, openmp_threads=1, validate_vars=None)

A step for performing forward ocean component runs as part of baroclinic channel test cases.

Variables

• resources_fixed (bool) – Whether resources were set already and shouldn’t be updated algorithmically

• dt (float) – The model time step in seconds

• btr_dt (float) – The model barotropic time step in seconds

__init__(component, name='forward', subdir=None, indir=None, ntasks=None, min_tasks=None, openmp_threads=1, validate_vars=None)

Create a new test case

Parameters

• component (polaris.Component) – The component the step belongs to

• name (str) – the name of the test case

• subdir (str, optional) –

  the subdirectory for the step. If neither this nor indir

  are provided, the directory is the name

• indir (str, optional) – the directory the step is in, to which name will be appended

• ntasks (int, optional) – the number of tasks the step would ideally use. If fewer tasks are available on the system, the step will run on all available tasks as long as this is not below min_tasks

• min_tasks (int, optional) – the number of tasks the step requires. If the system has fewer than this number of tasks, the step will fail

• openmp_threads (int, optional) – the number of OpenMP threads the step will use

• validate_vars (list, optional) – A list of variable names to compare with a baseline (if one is provided)

Methods

__init__(component[, name, subdir, indir, ...])	Create a new test case
add_dependency(step[, name])	Add step as a dependency of this step (i.e.
add_input_file([filename, target, database, ...])	Add an input file to the step (but not necessarily to the MPAS model).
add_model_config_options(options)	Add the replacement model config options to be parsed when generating a namelist or yaml file if and when the step gets set up.
add_namelist_file(package, namelist)	Add a file with updates to namelist options to the step to be parsed when generating a complete namelist file if and when the step gets set up.
add_output_file(filename[, validate_vars])	Add the output file that must be produced by this step and may be made available as an input to steps, perhaps in other tasks.
add_streams_file(package, streams[, ...])	Add a streams file to the step to be parsed when generating a complete streams file if and when the step gets set up.
add_yaml_file(package, yaml[, ...])	Add a file with updates to yaml config options to the step to be parsed when generating a complete yaml file if and when the step gets set up.
compute_cell_count()	Compute the approximate number of cells in the mesh, used to constrain resources
constrain_resources(available_cores)	Update the number of MPI tasks to use based on the estimated mesh size
dynamic_model_config(at_setup)	Add model config options, namelist, streams and yaml files using config options or template replacements that need to be set both during step setup and at runtime
map_yaml_to_namelist(options)	A mapping from yaml model config options to namelist options.
partition([graph_file])	Partition the domain for the requested number of tasks
process_inputs_and_outputs()	Process the model as an input, then call the parent class' version
run()	Run the step.
runtime_setup()	Update PIO namelist options, make graph file, and partition graph file (if any of these are requested)
set_model_resources([ntasks, min_tasks, ...])	Update the resources for the step.
set_resources([cpus_per_task, ...])	Update the resources for the subtask.
set_shared_config(config[, link])	Replace the step's config parser with the shared config parser
setup()	Determine if we will make yaml files or namelists and streams files, then, determine the number of MPI tasks to use based on the estimated mesh size
update_namelist_pio()	Modify the namelist so the number of PIO tasks and the stride between them consistent with the number of nodes and cores (one PIO task per node).
validate_baselines()	Compare variables between output files in this step and in the same step from a baseline run if one was provided.