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Subject: Re: [hwloc-devel] Windows 7 problems
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2010-05-03 18:09:17


Is this helpful?

   http://msdn.microsoft.com/en-us/library/ms724379(VS.85).aspx

You can use that to enumerate the ACPI firmware tables directly. Supposedly, you should be able to discover topology information. Not very user friendly, unfortunately.

On May 3, 2010, at 4:52 PM, Jeff Squyres (jsquyres) wrote:

> He says:
>
> GlobalMemoryStatusEx
> http://msdn.microsoft.com/en-us/library/aa366589(v=VS.85).aspx
>
> But that doesn't give numa node information. :-\
>
> He's looking to see if he can find another function that gives numa info, but it may take a little time (the windows memory subsystem guy is not available today to ask).
>
> I guess there's 2 options:
>
> 1. Take the total amount of memory and divide by the number of numa nodes. This is *probably* accurate on most machines today, but there's probably some machines where it isn't (and/or won't be in the future).
>
> 2. Indicate visually that it's the amount of memory available -- not the total memory. (do we document this somewhere, btw? I admit to not having reading the windows docs...?)
>
>
>
> On May 3, 2010, at 4:22 PM, Jeff Squyres (jsquyres) wrote:
>
> > (I'm asking my local Microsoft contact....)
> >
> > On May 3, 2010, at 4:15 PM, Samuel Thibault wrote:
> >
> > > Jeff Squyres, le Mon 03 May 2010 15:57:37 -0500, a écrit :
> > > > Running lstopo on w7 (64 bit):
> > > >
> > > > -----
> > > > C:\Temp\hwloc>lstopo
> > > > Note: GetLogicalProcessorInformationEx was never tested yet!
> > > > -----
> > >
> > > Ooops, it seems I have forgotten to remove it. Now done.
> > >
> > > > Plus, the memory it reported was the currently free memory, not total memory.
> > >
> > > Yes. I haven't found a win32 function that provides the total memory.
> > >
> > > Samuel
> > > _______________________________________________
> > > hwloc-devel mailing list
> > > hwloc-devel_at_[hidden]
> > > http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-devel
> > >
> >
> >
> > --
> > Jeff Squyres
> > jsquyres_at_[hidden]
> > For corporate legal information go to:
> > http://www.cisco.com/web/about/doing_business/legal/cri/
> >
> >
> > _______________________________________________
> > hwloc-devel mailing list
> > hwloc-devel_at_[hidden]
> > http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-devel
> >
>
>
> --
> Jeff Squyres
> jsquyres_at_[hidden]
> For corporate legal information go to:
> http://www.cisco.com/web/about/doing_business/legal/cri/
>
>
> _______________________________________________
> hwloc-devel mailing list
> hwloc-devel_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-devel
>

-- 
Jeff Squyres
jsquyres_at_[hidden]
For corporate legal information go to:
http://www.cisco.com/web/about/doing_business/legal/cri/