Le 12/09/2011 13:29, Gabriele Fatigati a écrit :

Hi Birce,

I'm so confused..

I'm binding MPI processes with set_cpu_bind and it works well. The problem is when I try to bind process and threads.

It seem that thread process influence bind of main thread.

And from hwloc manual:

hwloc_set_cpubind()

Bind current process or thread on cpus given in bitmap set.

Why you are saying tha process bind is not possible? I'm using it and it work well!

It worked because you never mixed it with single thread binding. If you bind process X to coreA and then thread Y of process X to coreB, what you should now see with get_cpubind is that process X is now bound to cores A+B, thread Y to B, and all other threads to A.

Brice