polaris.Step.set_resources

Step.set_resources(cpus_per_task=None, min_cpus_per_task=None, ntasks=None, min_tasks=None, openmp_threads=None, max_memory=None)[source]

Update the resources for the subtask. This can be done within init, setup() or runtime_setup() of this step, or init, configure() or run() for the task that this step belongs to.

Parameters:

  • cpus_per_task (int, optional) – the number of cores per task the step would ideally use. If fewer cores per node are available on the system, the step will run on all available cores as long as this is not below min_cpus_per_task

  • min_cpus_per_task (int, optional) – the number of cores per task the step requires. If the system has fewer than this number of cores per node, the step will fail

  • ntasks (int, optional) – the number of tasks the step would ideally use. If too few cores are available on the system to accommodate the number of tasks and the number of cores per task, the step will run on fewer tasks as long as as this is not below min_tasks

  • min_tasks (int, optional) – the number of tasks the step requires. If the system has too few cores to accommodate the number of tasks and cores per task, the step will fail

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

  • max_memory (int, optional) – the amount of memory that the step is allowed to use in MB. This is currently just a placeholder for later use with task parallelism