hbp_nrp_distributed_nest.launch.DaintLauncher module

Helper class to build and execute a formatted srun command

class DaintLauncher(executable)

Bases: object

Class constructs and executes the mpi in daint environment

add_host(hostname, tmpdir, processes=1)

Ignore add_host in daint. Slurm (srun) manages this internally

Parameters

• hostname – ignored

• tmpdir – ignored

• processes – ignored

build()

Construct the srun command line string with all hosts provided.

launch()

Launch the srun command and wait for successful startup of the CLE. Blocks until the CLE publishes completion on the status topic or if the srun command aborts.

run()

Block until the srun command exits. Check the return code to determine if it was successful or aborted. Backwards compatibility in naming convention, must be run.

shutdown()

Attempt to forecfully shutdown the srun command if it is still running and has not cleanly shut itself down. Guaranteed to be called after launch success or failure.