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--- cluster:156 [2017/04/04 14:18] – hmeij07
+++ cluster:156 [2017/04/05 14:42] (current) – [OpenHPC page 3] hmeij07
@@ Line 90: / Line 90: @@
 </code>
-Finish wit installing Intel's Parallel Data Studio (icc/ifort).
+Finish with installing Intel's Parallel Data Studio (icc/ifort).
 {{:cluster:install_guide-centos7.2-slurm-1.2-x86_64.pdf|install_guide-centos7.2-slurm-1.2-x86_64.pdf}}
+As user ''test''
+<code>
+module avail
+module spider
+which mpicc
+module load gnu/5.4.0
+module load openmpi/1.10.4
+which gcc
+which mpicc
+mpicc -O3 /opt/ohpc/pub/examples/mpi/hello.c
+cp /opt/ohpc/pub/examples/slurm/job.mpi .
+which prun
+find /opt/ohpc/pub -name prun
+module spider prun
+module load prun/1.1
+which prun
+sbatch job.mpi
+squeue
+</code>
+You do need to install the Infiniband section so you can run over ethernet with OpenMPI
+<code>
+  yum  -y groupinstall "Infiniband Support"
+  yum -y install infinipath-psm
+  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]]
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