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--- cluster:156 [2017/04/04 14:31]
hmeij07 [OpenHPC page 3]
+++ cluster:156 [2017/04/05 10:42] (current)
hmeij07 [OpenHPC page 3]
@@ Line 125: / Line 125: @@
   systemctl enable rdma
   systemctl start rdma
+# recipe is missing this: flavor openmpi
+  yum -y --installroot=/data/ohpc/images/centos7.2 install libibverbs opensm-libs infinipath-psm
 # remake vnfs
+</code>
+The following shows up when running MPI over ethernet
+<code>
+[prun] Master compute host = n29
+[prun] Resource manager = slurm
+[prun] Launch cmd = mpirun ./a.out
+--------------------------------------------------------------------------
+[[49978,1],4]: A high-performance Open MPI point-to-point messaging module
+was unable to find any relevant network interfaces:
+Module: OpenFabrics (openib)
+  Host: n31
+Another transport will be used instead, although this may result in
+lower performance.
+--------------------------------------------------------------------------
+ Hello, world (8 procs total)
+    --> Process #   2 of   8 is alive. -> n29.localdomain
+    --> Process #   3 of   8 is alive. -> n29.localdomain
+    --> Process #   0 of   8 is alive. -> n29.localdomain
+    --> Process #   1 of   8 is alive. -> n29.localdomain
+    --> Process #   6 of   8 is alive. -> n31.localdomain
+    --> Process #   7 of   8 is alive. -> n31.localdomain
+    --> Process #   4 of   8 is alive. -> n31.localdomain
+    --> Process #   5 of   8 is alive. -> n31.localdomain
 </code>
+See page 4 for ib0 configuration which is incomplete on the recipe.
+[[cluster:154|OpenHPC page 1]] - [[cluster:155|OpenHPC page 2]] - page 3 - [[cluster:160|OpenHPC page 4]]
 \\
 **[[cluster:0|Back]]**

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