Chelsio Communications Chelsio T5 User Manual page 72

Chapter IV. iWARP (RDMA)
The performance is best with NIC MTU set to 9000 bytes.
Open MPI (Installation and Setup)
Open MPI iWARP support is only available in Open MPI version 1.3 or greater.
Open MPI will work without any specific configuration via the openib btl. Users wishing to
performance tune the configurable options may wish to inspect the receive queue values. Those
can be found in the "Chelsio T4" section of
steps mentioned below to install and configure Open MPI.
i. If not alreay done, install mpi-selector tool.
ii. Download the latest stable/feature version of openMPI from OpenMPI website
,http://www.open-mpi.org
iii. Untar and change your current working directory to openMPI package directory.
iv. Configure and install as:
[root@host]# ./configure --with-openib=/usr
FC=gfortran --enable-mpirun-prefix-by-default --prefix=/usr/mpi/gcc/openmpi-
x.y.z/ --with-openib-libdir=/usr/lib64/ --libdir=/usr/mpi/gcc/openmpi-
x.y.z/lib64/ --with-contrib-vt-flags=--disable-iotrace
[root@host]# make
[root@host]# make install
The above step will install openMPI in /usr/mpi/gcc/openmpi-x.y.z/
To enable multithreading, add "--enable-mpi-thread-multiple" and
Note
"--with-threads=posix" parameters to the above configure command.
Chelsio T5/T4 Unified Wire For Linux
mca-btl-openib-device-params.ini
CC=gcc CXX=g++ F77=gfortran
. Follow the
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