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How do I run a compiled mpi based program across two nodes using 8 cores?
> salloc -N2 -n8 -p mpi > module load openmpi > srun yourcode |
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This will submit your code executable to the slurm partition using openmpi. See the slurm section of the wiki for further examples.
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No. The mpi partition is the only option.
Can parallel jobs be sent to any slurm partition?
No... The slurm mpi partition is where parallel jobs are supported. This partition has a limit of 128 cores/cpus per job request.
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Try the broadcast example found in the PGI directory tree:
/opt/shared/pgi/linux86-64/7.2-3/EXAMPLES/MPI/mpihello/mynane.c
As an example that requests 8 cores:
>module load pgi >module load openmpi >pgcc myname.c -o myname -Mmpi -I/opt/pgi/linux86-64/7.2-3/include/ |
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Note, there may be other versions of pgi and openmpi available via modules:
> module available
Where are the Portland executables ?
When you load the module for Portland, all executables will be on your path.
> ls /opt/shared/pgi/linux86-64/7.2-3/bin
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