[petsc-dev] error with karlrupp/fix-cuda-streams

[Mark Adams]

> Yes, it's supported, but it's a little different than what "-n" usually
> does in mpiexec, where it means the number of processes. For 'jsrun', it
> means the number of resource sets, which is multiplied by the "tasks per
> resource set" specified by "-a" to get the MPI process count. I think if we
> can specify that "-a 1" is part of our "mpiexec", then we should be OK with
> using -n as PETSc normally does.
>

jsrun does not run with just -n on SUMMIT. I have found that it works with
adding -g 1.
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