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Subject: Re: [OMPI devel] two questions about 1.7.1
From: Paul Kapinos (kapinos_at_[hidden])
Date: 2013-12-04 10:58:33


On 12/04/13 14:53, Jeff Squyres (jsquyres) wrote:
> On Dec 4, 2013, at 4:31 AM, Paul Kapinos <kapinos_at_[hidden]> wrote:
>> Argh - what a shame not to see "btl:usnic" :-|
> What a shame you don't have Cisco hardware to use the usnic BTL! :-p
Well, this is far above my decision level :o)

>>> Look for the openib messages, not the usnic messages.
>>
>> Well, as said there were *no messages* form the patch you provided in
>> http://www.open-mpi.org/community/lists/devel/2013/06/12472.php
>
> Ah, I see.
>
>> I've attached of a run with single process per node on nodes with 2 NICs, maybe you can see what goes wrong..
>
> What I'm guessing is happening here is that hwloc was built without PCI device detection, and therefore you're not getting the benefit of the near/far detection.
>
> I don't think we currently export whether hwloc was built with PCI device detection support or not, so look for the section in your configure output labeled:
>
> --- MCA component hwloc:hwloc152 (m4 configuration macro, priority 75)
>
> Send the output of that section here. There should be tests for PCI libraries in there; that should tell us whether you have PCI detection support enabled.

The whole configure output attached, to prevent bad copying, as far as output of
'ompi_info --all'.

As far as I see "it should be there":
> checking whether to enable hwloc PCI device support... yes (default)

-- 
Dipl.-Inform. Paul Kapinos   -   High Performance Computing,
RWTH Aachen University, Center for Computing and Communication
Seffenter Weg 23,  D 52074  Aachen (Germany)
Tel: +49 241/80-24915