User`s guide

Chapter IV. iWARP (RDMA)
Chelsio T5/T4 Unified Wire For Linux Page 72
x. Contact Intel for obtaining their MPI with DAPL support.
xi. To run Intel MPI applications:
mpdboot -n -r ssh --ncpus=
mpiexec -ppn -n 2 /opt/intel/impi/3.1/tests/IMB-3.1/IMB-MPI1
The performance is best with NIC MTU set to 9000 bytes.
Platform MPI Setup
i. After you have installed Platform MPI RPM and obtained the license from Platform
computing, unset the previously selected MPI as
mpi-selector –-unset <previous MPI>
ii. Edit .bashrc and add these lines:
export MPI_ROOT=/opt/platform_mpi/
export PATH=$MPI_ROOT/bin:/opt/bin:$PATH
export MANPATH=$MANPATH:$MPI_ROOT/share/man
iii. Log out and log back in.
iv. To run Platform MPI over RDMA interface, DAPL 2.0 should be set up as follows:
Enable the Chelsio device by adding an entry at the beginning of the /etc/dat.conf file for
the Chelsio interface. For instance, if your Chelsio interface name is eth2, then the following
line adds a DAT 2.0 device named "chelsio2" for that interface:
chelsio2 u2.0 nonthreadsafe default libdaplofa.so.2 dapl.2.0 "eth2 0" ""
 The hosts in this file should be Chelsio interface IP addresses.
 I_MPI_DEVICE=rdssm:chelsio assumes you have an entry in
/etc/dat.conf named chelsio.
 MPIEXEC_TIMEOUT value might be required to increase if heavy traffic is
going across the systems.
Note