Package: librdmacm-utils

"librdmacm-utils" package binaries on CentOS:

/usr/bin/cmtime /usr/bin/mckey /usr/bin/rcopy /usr/bin/rdma_client /usr/bin/rdma_server /usr/bin/rdma_xclient /usr/bin/rdma_xserver /usr/bin/riostream /usr/bin/rping /usr/bin/rstream /usr/bin/ucmatose /usr/bin/udaddy /usr/bin/udpong

You may install this package on CentOS with yum install librdmacm-utils