parsl.providers.KubernetesProvider

class parsl.providers.KubernetesProvider(image: str, namespace: str = 'default', nodes_per_block: int = 1, init_blocks: int = 4, min_blocks: int = 0, max_blocks: int = 10, max_cpu: float = 2, max_mem: str = '500Mi', init_cpu: float = 1, init_mem: str = '250Mi', parallelism: float = 1, worker_init: str = '', pod_name: Optional[str] = None, user_id: Optional[str] = None, group_id: Optional[str] = None, run_as_non_root: bool = False, secret: Optional[str] = None, persistent_volumes: List[Tuple[str, str]] = [])[source]

Kubernetes execution provider :param namespace: Kubernetes namespace to create deployments. :type namespace: str :param image: Docker image to use in the deployment. :type image: str :param nodes_per_block: Nodes to provision per block. :type nodes_per_block: int :param init_blocks: Number of blocks to provision at the start of the run. Default is 1. :type init_blocks: int :param min_blocks: Minimum number of blocks to maintain. :type min_blocks: int :param max_blocks: Maximum number of blocks to maintain. :type max_blocks: int :param max_cpu: CPU limits of the blocks (pods), in cpu units.

This is the cpu “limits” option for resource specification. Check kubernetes docs for more details. Default is 2.

Parameters

  • max_mem (str) – Memory limits of the blocks (pods), in Mi or Gi. This is the memory “limits” option for resource specification on kubernetes. Check kubernetes docs for more details. Default is 500Mi.

  • init_cpu (float) – CPU limits of the blocks (pods), in cpu units. This is the cpu “requests” option for resource specification. Check kubernetes docs for more details. Default is 1.

  • init_mem (str) – Memory limits of the blocks (pods), in Mi or Gi. This is the memory “requests” option for resource specification on kubernetes. Check kubernetes docs for more details. Default is 250Mi.

  • parallelism (float) – Ratio of provisioned task slots to active tasks. A parallelism value of 1 represents aggressive scaling where as many resources as possible are used; parallelism close to 0 represents the opposite situation in which as few resources as possible (i.e., min_blocks) are used.

  • worker_init (str) – Command to be run first for the workers, such as python start.py.

  • secret (str) – Docker secret to use to pull images

  • pod_name (str) – The name for the pod, will be appended with a timestamp. Default is None, meaning parsl automatically names the pod.

  • user_id (str) – Unix user id to run the container as.

  • group_id (str) – Unix group id to run the container as.

  • run_as_non_root (bool) – Run as non-root (True) or run as root (False).

  • persistent_volumes (list[(str, str)]) – List of tuples describing persistent volumes to be mounted in the pod. The tuples consist of (PVC Name, Mount Directory).

__init__(image: str, namespace: str = 'default', nodes_per_block: int = 1, init_blocks: int = 4, min_blocks: int = 0, max_blocks: int = 10, max_cpu: float = 2, max_mem: str = '500Mi', init_cpu: float = 1, init_mem: str = '250Mi', parallelism: float = 1, worker_init: str = '', pod_name: Optional[str] = None, user_id: Optional[str] = None, group_id: Optional[str] = None, run_as_non_root: bool = False, secret: Optional[str] = None, persistent_volumes: List[Tuple[str, str]] = []) → None[source]

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

Methods

__init__(image[, namespace, …])

Initialize self.

cancel(job_ids)

Cancels the jobs specified by a list of job ids Args: job_ids : [<job_id> …] Returns : [True/False…] : If the cancel operation fails the entire list will be False.

status(job_ids)

Get the status of a list of jobs identified by the job identifiers returned from the submit request.

submit(cmd_string, tasks_per_node[, job_name])

Submit a job :param - cmd_string: (String) - Name of the container to initiate :param - tasks_per_node: command invocations to be launched per node :type - tasks_per_node: int

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.

status_polling_interval

Returns the interval, in seconds, at which the status method should be called.