Commits on Jul 11, 2024

1. Check the runtime version of PMIx …

   It has been reported (and confirmed) that building against
   one version of PMIx and then running with another version
   will cause PRRTE to segfault. This isn't a universal rule.
   For example, one can switch v5.0 and master without a
   problem. However, switching v5.0 and v4.2 is a definite
   segfault.
   
   The root cause of the problem is a change in the layout
   of the base pmix_object_t definition. This renders all
   PMIx objects binary incompatible when crossing between
   the v5 and v4 (and below) series.
   
   Changing the v5 definition back to match v4 is an
   overly complex task. The changes were required to
   accommodate the new shared memory support that
   was introduced in v5.
   
   So instead, we check the runtime version of PMIx against
   the build version. If the runtime version is incompatible
   with the build version, then we print an explanatory
   error message and error out.
   
   Signed-off-by: Ralph Castain <rhc@pmix.org>
   
   bot:notacherrypick
   
   dd
   
   Signed-off-by: Ralph Castain <rhc@pmix.org>

   

   rhc54 authored and hppritcha committed Jul 11, 2024
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