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From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2005-12-16 17:36:06


Good to know -- thanks.

On Dec 16, 2005, at 1:13 PM, Bogdan Costescu wrote:

>
> Hi!
>
> This message is just to save others the time and effort of checking.
>
> The value of the affinity mask is inherited on fork(). However, after
> fork(), the parent and child have different copies of the mask, so
> modifying one will not modify the other.
>
> The affinity mask is not a hard restriction, the child can reset or
> escape the mask set by the parent or by an external entity, so the
> affinity mask _cannot_ be used in a way similar to setrlimit().
>
> --
> Bogdan Costescu
>
> IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen
> Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY
> Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868
> E-mail: Bogdan.Costescu_at_[hidden]
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--
{+} Jeff Squyres
{+} The Open MPI Project
{+} http://www.open-mpi.org/