[mpich-discuss] Hydra binding option

Gonzalo Martín Cruz gmcruz at arcos.inf.uc3m.es
Sat Jul 21 16:52:16 CDT 2012

Hi all,

I am working with MPICH2 v.1.4.1p1 in a dual core machine and I am trying
to bind two mpi processes to run in the same core (id 0) executing the
following command:

mpiexec -binding user:0,-1 -n 2 ./myprocess

But this way every process is binded to one different core (id 0 and 1
respectively). The only way I have been able to binding both processes to
same core (id 0) is executing the following command two times:

mpiexec -binding user:0 -n 1 ./myprocess

What am I doing wrong?

Thank you guys!

Gonzalo Martín Cruz
Computer Arquitecture Group
Computer Science Department
Universidad Carlos III de Madrid
e-mail: gmcruz at arcos.inf.uc3m.es
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