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Subject: [OMPI users] Ensuring use of real cores
From: John R. Cary (cary_at_[hidden])
Date: 2012-09-11 21:34:56


Our code gets little benefit from using virtual cores (hyperthreading),
so when we run with mpiexec on an 8 real plus 8 virtual machine, we
would like to be certain that it uses only the 8 real cores.

Is there a way to do this with openmpi?

Thx....John