Add the ability to specify which MPI launcher to use
@FrankD412 is already working on this.
Since Jun 12, 2018.
- Dominant language
- Python
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Description
@gonsie mentioned this issue previously, but I wanted to make note of it since this came up again when using the Flux-spectrum adapter. This issue addresses the ability to specify a different MPI launcher other than a schedulers default (say for SLURM, srun etc.).
The FluxSpectrum adapter handles this by requiring the `mpi` key in its batch parameters. I propose that this key, along with something like `mpi_args` become required batch keys. An adapter can then index into a standard set of MPI objects to get the appropriate launcher format (and validate args). The `mpi` key could even be optional, with each specific scheduling adapter specifying its preferred default.
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