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Published 20 hours ago • verified publisher icon open-mpi

pmix/prrte for Open MPI 6.0.0rc's and maybe release

Open hppritcha opened this issue 1 week ago • 2 comments

bot:notacherrypick

A compromise for now. We aren't going to release a OMPI 6.0.0 using 3rd-party/pmix prrte unreleased packages.

So for now we will use

  • pmix at 5.0.10rc1 (will probably be official 5.0.10 by the time we release)
  • prrte at head of head of ompi_v3.0 (which is prrte 3.0.13 + ompi patches)

A side effect of this choice is that we loose support for UCX with excids, aka no support for MPI_Comm_from_group/MPI_Intercomm_create_from_groups when using the UCX PML. A subsequent PR will add some protection to report to a user what's going on if they hit this issue.

Workarounds for UCX are to use external PMIx master and PRRTe master installations when building Open MPI, or to use the OB1 PML.

hppritcha avatar Dec 04 '25 23:12 hppritcha