parsl.providers.CobaltProvider

class parsl.providers.CobaltProvider(channel=LocalChannel( envs={}, script_dir=None, userhome='/home/docs/checkouts/readthedocs.org/user_builds/parsl/checkouts/latest/docs' ), nodes_per_block=1, init_blocks=0, min_blocks=0, max_blocks=10, parallelism=1, walltime='00:10:00', account=None, queue=None, scheduler_options='', worker_init='', launcher=AprunLauncher(overrides=''), cmd_timeout=10)[source]

Cobalt Execution Provider

This provider uses cobalt to submit (qsub), obtain the status of (qstat), and cancel (qdel) jobs. Theo script to be used is created from a template file in this same module.

Parameters:
  • channel (Channel) – Channel for accessing this provider. Possible channels include LocalChannel (the default), SSHChannel, or SSHInteractiveLoginChannel.
  • nodes_per_block (int) – Nodes to provision per block.
  • min_blocks (int) – Minimum number of blocks to maintain.
  • max_blocks (int) – Maximum number of blocks to maintain.
  • walltime (str) – Walltime requested per block in HH:MM:SS.
  • account (str) – Account that the job will be charged against.
  • queue (str) – Torque queue to request blocks from.
  • scheduler_options (str) – String to prepend to the submit script to the scheduler.
  • worker_init (str) – Command to be run before starting a worker, such as ‘module load Anaconda; source activate env’.
  • launcher (Launcher) – Launcher for this provider. Possible launchers include AprunLauncher (the default) or, SingleNodeLauncher
__init__(channel=LocalChannel( envs={}, script_dir=None, userhome='/home/docs/checkouts/readthedocs.org/user_builds/parsl/checkouts/latest/docs' ), nodes_per_block=1, init_blocks=0, min_blocks=0, max_blocks=10, parallelism=1, walltime='00:10:00', account=None, queue=None, scheduler_options='', worker_init='', launcher=AprunLauncher(overrides=''), cmd_timeout=10)[source]

Initialize self. See help(type(self)) for accurate signature.

Methods

__init__([channel, nodes_per_block, …]) Initialize self.
cancel(job_ids) Cancels the jobs specified by a list of job ids
execute_wait(cmd[, timeout])
status(job_ids) Get the status of a list of jobs identified by the job identifiers returned from the submit request.
submit(command, blocksize, tasks_per_node[, …]) Submits the command onto an Local Resource Manager job of blocksize parallel elements.

Attributes

current_capacity Returns the currently provisioned blocks.
scaling_enabled The callers of ParslExecutors need to differentiate between Executors and Executors wrapped in a resource provider