CWL Workflow: mpi_simple_wf.cwl

Workflow: mpi_simple_wf.cwl

Fetched 2025-05-10 06:50:27 GMT

Verified with cwltool version 3.1.20230201224320

Simple 2 step workflow to check that workflow steps are independently picking up on the number of processes. First run the parallel get PIDs step (on the input num procs) then run (on a single proc) the line count. This should equal the input.

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This workflow is Open Source and may be reused according to the terms of: Apache License 2.0

Note that the tools invoked by the workflow may have separate licenses.

Inputs

ID	Type	Title	Doc
processes	Integer

Steps

ID	Runs	Label	Doc
count	mpi_line_count.cwl (CommandLineTool)		Line count of input, but mpirun on a single process
par_pids	mpi_expr.cwl (CommandLineTool)		Trivial MPI test that prints the process IDs of each of the parallel processes. Requires Python (but you have cwltool running, right?) and an MPI implementation. This version takes the number of processes to use as an input and then passes this to the MPIRequirement using an expression.

Outputs

ID	Type	Label	Doc
line_count	File

html json turtle jsonld rdfxml svg png dot zip ro yaml raw

Permalink: https://w3id.org/cwl/view/git/f94719e862f86cc88600caf3628faba6c0d05042/tests/wf/mpi_simple_wf.cwl