parsl.providers.AdHocProvider

class parsl.providers.AdHocProvider(channels=[], worker_init='', cmd_timeout=30, parallelism=1, move_files=None)

Ad-hoc execution provider

This provider is used to provision execution resources over one or more ad hoc nodes that are each accessible over a Channel (say, ssh) but otherwise lack a cluster scheduler.

Parameters

• channels (list of Channel ojects) – Each channel represents a connection to a remote node

• worker_init (str) – Command to be run before starting a worker, such as ‘module load Anaconda; source activate env’. Since this provider calls the same worker_init across all nodes in the ad-hoc cluster, it is recommended that a single script is made available across nodes such as ~/setup.sh that can be invoked.

• cmd_timeout (int) – Duration for which the provider will wait for a command to be invoked on a remote system. Defaults to 30s

• parallelism (float) – Determines the ratio of workers to tasks as managed by the strategy component

__init__(channels=[], worker_init='', cmd_timeout=30, parallelism=1, move_files=None)

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

Methods

__init__([channels, worker_init, …])	Initialize self.
cancel(job_ids)	Cancel a list of jobs with job_ids
status(job_ids)	Get status of the list of jobs with job_ids
submit(command, tasks_per_node[, job_name])	Submits the command onto a channel from the list of channels

Attributes

cores_per_node	Number of cores to provision per node.
label	Provides the label for this provider
mem_per_node	Real memory to provision per node in GB.
scaling_enabled
status_polling_interval	Returns the interval, in seconds, at which the status method should be called.