Hi Greg,
I think the UCX PML may be discomfited by the lack of thread safety.
Could you try using the contrib/configure-release-mt in your ucx folder? You
want to add –enable-mt.
That’s what stands out in your configure output from the one I usually get when
building on a MLNX connectx5 clust
I added -enable-mt and re-installed UCX. Same result. (I didn't re-compile
OpenMPI.)
A conspicuous warning I see in my UCX configure output is:
checking for rdma_establish in -lrdmacm... no
configure: WARNING: RDMACM requested but librdmacm is not found or does not
provide rdma_establish() API
Thanks, Howard.
I downloaded a current version of UCX (1.11.2) and installed it with OpenMPI
4.1.1. When I try to specify the "-mca pml ucx" for a simple, 2-process
benchmark problem, I get:
--
No components were able to be
HI Greg,
Oh yes that’s not good about rdmacm.
Yes the OFED looks pretty old.
Did you by any chance apply that patch? I generated that for a sysadmin here
who was in the situation where they needed to maintain Open MPI 3.1.6 but had
to also upgrade to some newer RHEL release, but the Open MPi
