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--- cluster:160 [2017/04/05 10:50]
hmeij07 [OpenHPC page 4]
+++ cluster:160 [2017/04/05 15:25]
hmeij07 [OpenHPC page 4]
@@ Line 16: / Line 16: @@
 # User environment
 yum -y --installroot=$CHROOT install lmod-ohpc
+</code>
+Next we import a template file in which the IPADDR and NETMASK values of the ''ib0'' interface will be replaced with values from the database. Add to your deploy scripts lines like
+<code>
+wwsh file import /opt/ohpc/pub/examples/network/centos/ifcfg-ib0.ww
+wwsh -y file set ifcfg-ib0.ww --path=/etc/sysconfig/network-scripts/ifcfg-ib0
+ wwsh node set $node --netdev=ib0 \
+ --ipaddr=$ipaddri \
+ --netmask=255.255.0.0  --network=255.255.0.0 -y
+ wwsh provision set $node --fileadd ifcfg-ib0.ww -y
+</code>
+Reassemble the VNFS and reimage nodes. Now you can follow IpoIB instructions [[cluster:145|Infiniband]]
+Then add these lines to ~test/.bashrc file and resubmit job.mpi and you'll notice we now run MPI over Infiniband.
+<code>
+# User specific aliases and functions
+module load gnu/5.4.0
+module load openmpi/1.10.4
+module load prun/1.1
+module list
+# job.102.out
+/opt/ohpc/pub/prun/1.1/prun
+[prun] Master compute host = n29
+[prun] Resource manager = slurm
+[prun] Launch cmd = mpirun ./a.out
+ Hello, world (8 procs total)
+    --> Process #   0 of   8 is alive. -> n29.localdomain
+    --> Process #   1 of   8 is alive. -> n29.localdomain
+    --> Process #   2 of   8 is alive. -> n29.localdomain
+    --> Process #   3 of   8 is alive. -> n29.localdomain
+    --> Process #   4 of   8 is alive. -> n31.localdomain
+    --> Process #   5 of   8 is alive. -> n31.localdomain
+    --> Process #   6 of   8 is alive. -> n31.localdomain
+    --> Process #   7 of   8 is alive. -> n31.localdomain
 </code>

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