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Subject: Re: [hwloc-users] on using hwloc_get_area_membind_nodeset
From: Brice Goglin (Brice.Goglin_at_[hidden])
Date: 2011-07-06 03:27:54


I created ticket #46 about this. We'll try to implement this in 1.3.

https://svn.open-mpi.org/trac/hwloc/ticket/46

Brice

Le 06/07/2011 08:48, Alfredo Buttari a écrit :
> Brice, Samuel,
> thanks for your very quick replies. Yes you're right, errno is set to
> ENOSYS. No luck.
> Maybe I can get away with a single call to get_mempolicy (no need to
> check for all the pages in the memory area).
> Thanks again
>
> best regards
> alfredo
>
>
> On Tue, Jul 5, 2011 at 8:34 PM, Brice Goglin <Brice.Goglin_at_[hidden]> wrote:
>> Hello,
>>
>> You're running Linux and errno is ENOSYS, right? From what I remember,
>> it's not supported on Linux because getting memory binding is very
>> poorly supported. I think we could implement it but it would be very
>> slow (one get_mempolicy syscall per virtual page or something like that).
>>
>> Brice
>
>