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future.batchtools (version 0.20.0)

BatchtoolsTemplateFutureBackend: Batchtools futures for LSF, OpenLava, SGE, Slurm, TORQUE etc.

Description

Batchtools futures for LSF, OpenLava, SGE, Slurm, TORQUE etc. are asynchronous multiprocess futures that will be evaluated on a compute cluster via a job scheduler.

Usage

BatchtoolsTemplateFutureBackend(
  type,
  scheduler.latency = 1,
  fs.latency = 65,
  resources = list(),
  delete = getOption("future.batchtools.delete", "on-success"),
  template = NULL,
  makeClusterFunctions = NULL,
  workers = getOption("future.batchtools.workers", default = 100L),
  ...
)

Value

An object of class BatchtoolsFutureBackend.

Arguments

type

(character string) Type of job scheduler.

scheduler.latency

[numeric(1)]
Time to sleep after important interactions with the scheduler to ensure a sane state. Currently only triggered after calling submitJobs.

fs.latency

[numeric(1)]
Expected maximum latency of the file system, in seconds. Set to a positive number for network file systems like NFS which enables more robust (but also more expensive) mechanisms to access files and directories. Usually safe to set to 0 to disable the heuristic, e.g. if you are working on a local file system.

resources

(optional) A named list passed to the batchtools job-script template as variable resources. This is based on how batchtools::submitJobs() works, with the exception for specially reserved names defined by the future.batchtools package;

  • resources[["asis"]] is a character vector that are passed as-is to the job script and are injected as job resource declarations.

  • resources[["modules"]] is character vector of Linux environment modules to be loaded.

  • resources[["startup"]] and resources[["shutdown"]] are character vectors of shell code to be injected to the job script as-is.

  • resources[["details"]], if TRUE, results in the job script outputting job details and job summaries at the beginning and at the end.

  • All remaining resources named elements are injected as named resource specification for the scheduler.

delete

Controls if and when the batchtools job registry folder is deleted. If "on-success" (default), it is deleted if the future was resolved successfully and the expression did not produce an error. If "never", then it is never deleted. If "always", then it is always deleted.

template

(optional) A batchtools template file or a template string (in brew format). If not specified, it is left to the batchtools package to locate such file using its search rules.

workers

The maximum number of workers the batchtools backend may use at any time, which for HPC schedulers corresponds to the maximum number of queued jobs. The default is getOption("future.batchtools.workers", 100).

...

Additional arguments passed to BatchtoolsFutureBackend().

Details

These type of batchtools futures rely on batchtools backends set up using the following batchtools functions: