Thanks, yes I have installed those libraries. See below. Initially I
installed the libraries via yum. But then I tried installing the rpms
directly from Mellanox website (
MLNX_OFED_LINUX-4.5-1.0.1.0-rhel7.5-x86_64.tar ). Even after doing
that, I still got the same error with openmpi. I will try your
suggestion of building openmpi from source next!
root@lustwzb34:/root # yum list | grep ibverbs
libibverbs.x86_64 41mlnx1-OFED.4.5.0.1.0.45101
libibverbs-devel.x86_64 41mlnx1-OFED.4.5.0.1.0.45101
libibverbs-devel-static.x86_64 41mlnx1-OFED.4.5.0.1.0.45101
libibverbs-utils.x86_64 41mlnx1-OFED.4.5.0.1.0.45101
libibverbs.i686 17.2-3.el7
rhel-7-server-rpms
libibverbs-devel.i686 1.2.1-1.el7
rhel-7-server-rpms
root@lustwzb34:/root # lsmod | grep ib
ib_ucm 22602 0
ib_ipoib 168425 0
ib_cm 53141 3 rdma_cm,ib_ucm,ib_ipoib
ib_umad 22093 0
mlx5_ib 339961 0
ib_uverbs 121821 3 mlx5_ib,ib_ucm,rdma_ucm
mlx5_core 919178 2 mlx5_ib,mlx5_fpga_tools
mlx4_ib 211747 0
ib_core 294554 10
rdma_cm,ib_cm,iw_cm,mlx4_ib,mlx5_ib,ib_ucm,ib_umad,ib_uverbs,rdma_ucm,ib_ipoib
mlx4_core 360598 2 mlx4_en,mlx4_ib
mlx_compat 29012 15
rdma_cm,ib_cm,iw_cm,mlx4_en,mlx4_ib,mlx5_ib,mlx5_fpga_tools,ib_ucm,ib_core,ib_umad,ib_uverbs,mlx4_core,mlx5_core,rdma_ucm,ib_ipoib
devlink 42368 4 mlx4_en,mlx4_ib,mlx4_core,mlx5_core
libcrc32c 12644 3 xfs,nf_nat,nf_conntrack
root@lustwzb34:/root #
Did you install libibverbs (and libibverbs-utils, for information and
troubleshooting)?
yum list |grep ibverbs
Are you loading the ib modules?
lsmod |grep ib
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