[mvapich-discuss] Disable CPU Binding

[Jonathan Perkins]

On Fri, Aug 31, 2012 at 11:14:54AM -0400, Brock Palen wrote:
> Is it possible to disable cpu affinity after mvapich has been built?

If you're using mvapich2 set M2_ENABLE_AFFINITY to 0

Example:
    mpirun_rsh -n 2 host1 host1 MV2_ENABLE_AFFINITY=0 ./mpiprogram

http://mvapich.cse.ohio-state.edu/support/user_guide_mvapich2-1.8.html#x1-17000011.22


> 
> We have found a bug in our cpuset/cgroup code that as a quick work around disabling affinity of MPI ranks would be helpful for the moment.
> 
> Thanks!
> 
> Brock Palen
> www.umich.edu/~brockp
> CAEN Advanced Computing
> brockp at umich.edu
> (734)936-1985
> 
> 
> 
> 
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-- 
Jonathan Perkins
http://www.cse.ohio-state.edu/~perkinjo