Torje Henriksen wrote:
> Still, all eight cores are being used. I can see why you would want to
> use all cores, and I can see that oversubscribing a sub-set of the
> cores might seem silly. My question is, is it possible to do what I
> want to do without hacking the open mpi code?
Could you get numactl to help you do what you want? That is, for the
code, somehow tweak the launcher to run
numactl --physcpubind=X ...
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
web : http://www.scalableinformatics.com
phone: +1 734 786 8423
fax : +1 866 888 3112
cell : +1 734 612 4615