Commit b46e317b authored by Philip Carns's avatar Philip Carns
Browse files

how to get mpich over openmpi

parent 677f6a2b
......@@ -85,6 +85,16 @@ generaly because they are either large packages or have large dependencies. I
tend to work from MPICH's latest version in git, so I have also told spack
about my locally installed MPICH.
Note that if you prefer to have spack use mpich over openmpi any time that
"mpi" is a package dependency, add this to your packages.yaml as well:
# prefer MPICH by default
mpi: [mpich,openmpi]
These `packages` files live in a platform-specific directory (run `spack arch
-p` to see what platform spack thinks you are on). Pretty helpful for e.g.
Argonne, where a home file system is shared between a linux cluster, a blue
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