User`s guide

Chapter IV. iWARP (RDMA)
Chelsio T5/T4 Unified Wire For Linux Page 79
Workaround: Increase the OpenMPI rdma route resolution timeout. The default is 1000, or
1000ms. Increase it to 30000 with this parameter:
--mca btl_openib_connect_rdmacm_resolve_timeout 30000
 Run MVAPICH2 application as :
mpirun_rsh -ssh -np 8 -hostfile mpd.hosts $MVAPICH2_HOME/tests/imb/IMB-MPI1
4.3. Setting up NFS-RDMA
4.3.1. Starting NFS-RDMA
Server-side settings
Follow the steps mentioned below to set up an NFS-RDMA server.
i. Make entry in /etc/exports file for the directories you need to export using NFS-RDMA on
server as:
/share/rdma *(fsid=0,async,insecure,no_root_squash)
/share/rdma1 *(fsid=1,async,insecure,no_root_squash)
Note that for each directory you export, you should have DIFFERENT fsid’s.
ii. Load the iwarp modules and make sure peer2peer is set to 1.
iii. Load xprtrdma and svcrdma modules as:
[root@host]# modprobe xprtrdma
[root@host]# modprobe svcrdma
iv. Start the nfs service as:
[root@host]# service nfs start