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!
2011/9/12 Brice Goglin
<Brice.Goglin@inria.fr>
Le 12/09/2011 12:52, Gabriele Fatigati a écrit :
> Dear hwloc users,
>
> I'm binding process in a NUMA node and also associated OpenMP threads.
> I've noted that, if I bind execution of all on different cores in
> the same NUMA node , it works well.
>
> If I bind process in NUMA node 0 for example, and thread on NUMA node
> 1, the process is bound on NUMA node 1, and not 0.
>
> Why this? Thread binding influence bind of main process?
>
Hello Gabriele,
At least on Linux, you cannot bind a process. When you ask hwloc to bind
a process, it just binds all threads contained in this process. When you
do get_cpubind on a process, it returns the logical OR of the binding of
all threads.
Brice
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Ing. Gabriele Fatigati
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