[Bug 2240302] Review Request: gloo - A PyTorch communication library

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https://bugzilla.redhat.com/show_bug.cgi?id=2240302



--- Comment #4 from Benson Muite <benson_muite@xxxxxxxxxxxxx> ---
There is a knob to turn on MPI, though it is not in the main
CMakeLists.txt file:
https://github.com/facebookincubator/gloo/blob/main/gloo/mpi/CMakeLists.txt#L1

The OpenSSL used is a compatibility shim allowing
use of 1.1 interface but using OpenSSL3.  Please see:
https://koji.fedoraproject.org/koji/taskinfo?taskID=106674591
https://download.copr.fedorainfracloud.org/results/fed500/gloo/fedora-rawhide-x86_64/06440734-gloo/gloo.spec

Probably, it is helpful to initially have 3 builds:
i) No MPI, ibverbs, tcp
ii) OpenMPI, ibverbs, tcp
iii) MPICH, ibverbs, tcp

There are also nccl and rccl backends:
https://github.com/facebookincubator/gloo/tree/main/gloo/nccl
but nccl and rccl are not in Fedora.

1) https://github.com/NVIDIA/nccl
2) https://github.com/ROCmSoftwarePlatform/rccl

Please also add soname to shared the library listing:
https://docs.fedoraproject.org/en-US/packaging-guidelines/#_listing_shared_library_files


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