Adhoc HPC Plugin

This HPC environment can be selected via --execenv=hpc.adhoc. In this HPC environment, SIERRA will run experiments spread across an ad-hoc network of compute nodes.

Warning

--sierra-root MUST be on a shared mount point across all nodes, or things will not work out of the box. You will have to manually copy things around in between stages (which you can do, of course).

The following environmental variables are used in the Adhoc HPC environment:

Adhoc-SIERRA interface

Environment variable	SIERRA context	Command line override
PARALLEL	Used to transfer environment variables into the GNU parallel environment.	N/A
LD_LIBRARY_PATH	Exported by SIERRA via PARALLEL to child GNU parallel processes. Can be undefined when SIERRA starts.	N/A
PYTHONPATH	Exported by SIERRA via PARALLEL to child GNU parallel processes. Can be undefined when SIERRA starts.	N/A
PATH	Exported by SIERRA via PARALLEL to child GNU parallel processes. Can be undefined when SIERRA starts.	N/A
SIERRA_NODEFILE	Contains hostnames/IP address of all compute nodes SIERRA can use. Same format as GNU parallel --sshloginfile. SIERRA_NODEFILE must be defined or --nodefile passed. If neither is true, SIERRA will throw an error.	--nodefile