Bug#1004556: libmpich-dev: The simplest MPI program compiled with mpich crashes

[Alastair McKinstry]

I can disable pmix support in mpich.

Pmix is working fine in openmpi, so it’s an mpich/pmix issue of some sort (or maybe ch4)

Regards
Alastair

On 22/02/2022, 14:57, "debian-science-maintainers on behalf of Drew Parsons" <debian-science-maintainers-bounces+mckinstry=debian.org at alioth-lists.debian.net on behalf of dparsons at debian.org> wrote:

    Package: mpich
    Followup-For: Bug #1004556

    My guess is that this bug is ongoing in 4.0-2 because of pmix support.

    4.0-2 is still configured --with-pmix=/usr/lib/x86_64-linux-gnu/pmix2
    and still Depends: libpmix2 (>= 4.1.2)

    pmix support was added in 4.0~b1-2 along with ucx.

    I gather ucx was deactivated in 4.0-2 but pmix was not. Looks like pmix
    also needs to go (unless the problem is ch4, which was also added in
    4.0~b1-2). But the error message references PMIX.


    Ironically, I find that an executable compiled against mpich 4.0-1
    fails with mpiexec.mpich (as raised in this bug) but actually passes
    when run with mpiexec.openmpi.  Awkward.

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