[mvapich-discuss] mvapich2 reproducible builds

[Bernhard M. Wiedemann]

Dear mvapich2 devs,

While working on reproducible builds for openSUSE, I found that
our mvapich2 package got variations in build results related to
non-deterministic filesystem-readdir-order

That can be fixed with this patch:
https://github.com/pmodels/mpich/pull/3690

Not all hunks might be strictly required, but it is OK to sort more than
needed.

I also attached this patch rebased to mvapich2-2.2

See also https://reproducible-builds.org/ for why this matters.

Ciao
Bernhard M.
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