Check the runtime version of PMIx #1983
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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> dd Signed-off-by: Ralph Castain <rhc@pmix.org> (cherry picked from commit d02ad07)
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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
(cherry picked from commit d02ad07)