[mpich-discuss] Restrict number of cores, not threads

Bob Ilgner bobilgner at gmail.com
Wed Jul 10 09:41:27 CDT 2013

Dear all,

I am working on a shared memory processor with 256 cores. I am working from
the command line directly.

Can I restict the number of cores that I deploy.The command

mpirun -n 100 myprog

will automatically start on 100 cores. I wish to use only 10 cores and have
10 threads on each core. Can I do this with mpich ?  Rememebre that this an
smp abd I can not identify each core individually(as in a cluster)

Regards, bob
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