Thanks and sorry, had a feeling I was missing something obvious!
On 08/22/2013 02:56 PM, Ralph Castain wrote:
You need to tell mpirun that your system doesn't have homogeneous nodes:
--hetero-nodes Nodes in cluster may differ in topology, so send
the topology back from each node
[Default = false]
On Aug 22, 2013, at 2:48 PM, Noah Knowles <nknow...@usgs.gov> wrote:
Hi, newb here, so sorry if this is a dumb question but I haven't found an
answer. I am running OpenMPI 1.7.2 on a small Rocks 6.1, Bladecenter H cluster.
I am using the bind-to-socket option on nodes with different numbers of cores
per socket. For the sample output below, compute-0-2 has two 6-core sockets and
compute-0-3 has two 8-core sockets.
[1,4]<stderr>:[compute-0-2.local:03268] MCW rank 4 bound to socket 0[core 0[hwt
0]], socket 0[core 1[hwt 0]], socket 0[core 2[hwt 0]], socket 0[core 3[hwt 0]],
socket 0[core 4[hwt 0]], socket 0[core 5[hwt 0]]: [B/B/B/B/B/B][./././././.]
[1,5]<stderr>:[compute-0-2.local:03268] MCW rank 5 bound to socket 1[core 6[hwt
0]], socket 1[core 7[hwt 0]], socket 1[core 8[hwt 0]], socket 1[core 9[hwt 0]],
socket 1[core 10[hwt 0]], socket 1[core 11[hwt 0]]: [./././././.][B/B/B/B/B/B]
[1,6]<stderr>:[compute-0-3.local:03816] MCW rank 6 bound to socket 0[core 0[hwt
0]], socket 0[core 1[hwt 0]], socket 0[core 2[hwt 0]], socket 0[core 3[hwt 0]],
socket 0[core 4[hwt 0]], socket 0[core 5[hwt 0]]: [B/B/B/B/B/B/./.][./././././././.]
[1,7]<stderr>:[compute-0-3.local:03816] MCW rank 7 bound to socket 0[core 6[hwt
0]], socket 0[core 7[hwt 0]], socket 1[core 8[hwt 0]], socket 1[core 9[hwt 0]],
socket 1[core 10[hwt 0]], socket 1[core 11[hwt 0]]: [././././././B/B][B/B/B/B/./././.]
Is this behavior intended? Is there any way to cause bind-to-socket to use all
cores on a socket for the 6-core AND the 8-core nodes? Or at least to have that
last binding not spread across cores on two sockets?
I've tried a rankfile too, but had errors-- that should probably be a separate
thread though.
Thanks,
Noah
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