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Subject: Re: [hwloc-devel] restricted topology (& topology changes)
From: Samuel Thibault (samuel.thibault_at_[hidden])
Date: 2009-09-27 09:34:39


Fawzi Mohamed, le Sun 27 Sep 2009 15:26:40 +0200, a écrit :
> thanks for the quick answers, so I think that the answer is for now
> you can on linux 2.6 if you use cpusets.

Yes, cpusets are supported IIRC.

> >>>I've wondered how to implement topology changes indeed. AIX does
> >>>have a SIGRECONFIG signal for this, I don't know any support from
> >>>other OSes.
> >>
> >>Maybe there's a inotify way to get such changes in Linux.
> >
> >There is usually no inotify support for virtual files. I've
> >just tested that it doesn't work for /sys/bus/usb/devices for
> >instance. We'll have to ask kernel developers for it.
>
> ok just as information osx has such a callback if possible it would be
> nice to have such functionality abstracted away...

Do you know how it is called?
(problem with macosx is that it doesn't support processor binding
anyway...)

Samuel