Hello everybody,
Pavan,
One issue which I observed with mpich2-1.3a1. It is related to launcing of pmi_proxy processes. I marked bold the unexpected behaviour.
1. I use the following hostsfile:
host0
host1
host0
host1
My command line is:
> mpiexec --print-rank-map -f hostsfile -n 4 ./test
(host0:0)
(host1:1)
(host0:2)
(host1:3)
Hello world: rank 0 of 4 running on host0
Hello world: rank 1 of 4 running on host1
Hello world: rank 2 of 4 running on host0
Hello world: rank 3 of 4 running on host1
I looked into host0 and host1 and observed two pmi_proxy processes on each node. I guess it should be one pmi_proxy process on each node. Is it a bug or expected behavior?
Other scenarios which I use worked as expected:
2. hostsfile:
host0
host0
host1
host1
> mpiexec --print-rank-map -f hostsfile -n 4 ./test
(host0:0,1)
(host1:2,3)
Hello world: rank 0 of 4 running on host0
Hello world: rank 1 of 4 running on host0
Hello world: rank 2 of 4 running on host1
Hello world: rank 3 of 4 running on host1
3. hostsfile:
host0
host1
> mpiexec --print-rank-map -f hostsfile -n 4 ./test
(host0:0,2)
(host1:1,3)
Hello world: rank 0 of 4 running on host0
Hello world: rank 1 of 4 running on host1
Hello world: rank 2 of 4 running on host0
Hello world: rank 3 of 4 running on host1
Thank you.
--
Best regards,
Yury Kiryanov
phone: 8-83130-70700 (ext. 2531)
i-net : 8313-2531
e-mail: yury.kiryanov(a)intel.com
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