For some reason 4.7 UCX 1.7 is not built anymore with --enable-mt option and codes which work fine with MOFED 4.6 UCX (e.g. tensorflow) crashes immediately with MOFED 4.7. Rebuilding rpm with --enable-mt fixes the issue but it was really annoying to figure it out. Actually there should be two versions of UCX rpms like in HPCX-MPI where multi-threaded libs are in different directory.
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