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Hello,
Assuming I have installed openmpi built with distro stock gcc(4.4.7 on rhel 6.5), but an app requires a different gcc version (8.2 manually built on dev machine).
Would there be any issues, or performance penalty, if building the app using the more recent gcc with flags from wrapper compiler's --showme as per https://www.open-mpi.org/faq/?category=mpi-apps#cant-use-wrappers ? Openmpi is built with both pmix and ucx enabled, all built with
stock gcc(4.4.7).
Since the constraint is the app, if the answer is yes I would have to build openmpi using non-distro gcc which is a bit of a hassle.
Thanks in advance --Dani_L. |
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