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From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2007-04-19 19:42:31


Sorry we couldn't figure out it -- let us know if you resume your
Open MPI testing.

On Apr 19, 2007, at 6:24 PM, stephen mulcahy wrote:

> Hi,
>
> I only have access to this test system for another 24 hours or so
> so I'm
> not sure it's worth any more of your efforts. Coupled with the fact
> that
> I don't have root on the system in question it could be more work too
> figure out whats going on than its worth.
>
> Thanks for your help so far,
>
> -stephen
>
> Jeff Squyres wrote:
>> Yes, this is sounding more mysterious. Please send the output listed
>> here:
>>
>> http://www.open-mpi.org/community/help/
>>
>>
>> On Apr 19, 2007, at 8:15 AM, stephen mulcahy wrote:
>>
>>> Jeff Squyres wrote:
>>>> That's truly odd -- I can't imagine why you wouldn't get the TCP
>>>> transport with the above command line. But the latencies, as you
>>>> mentioned, are far too low for TCP.
>>>>
>>>> To be absolutely certain that you're not getting the IB
>>>> transport, go
>>>> to the $prefix/lib/openmpi directory and make a bogus subdirectory
>>>> (e.g., "mkdir foo"). Then move the *openib* and *mvapi* components
>>>> into that subdirectory (you'll likely only have either "openib"
>>>> *or*
>>>> "mvapi" -- not both).
>>>>
>>>> Then try running again.
>>> What is stranger still is that I can't find any *openib* or *mvapi*
>>> components in that subdirectory so I'm left wondering what exactly
>>> it's
>>> using to communicate. I don't think it's using shared memory because
>>> I've run a shared memory test aswell and the latencies are lower
>>> with that.
>>>
>>> Perhaps it's interacting with something else installed somewhere on
>>> the
>>> system?
>>>
>>> -stephen
>>> --
>>> Stephen Mulcahy, Applepie Solutions Ltd., Innovation in Business
>>> Center,
>>> GMIT, Dublin Rd, Galway, Ireland. +353.91.751262 http://
>>> www.aplpi.com
>>> Registered in Ireland, no. 289353 (5 Woodlands Avenue, Renmore,
>>> Galway)
>>> _______________________________________________
>>> users mailing list
>>> users_at_[hidden]
>>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>>
>>
>
> --
> Stephen Mulcahy, Applepie Solutions Ltd, Innovation in Business
> Center,
> GMIT, Dublin Rd, Galway, Ireland. mailto:smulcahy_at_[hidden]
> mobile:+353.87.2930252 office:+353.91.751262 http://www.aplpi.com
> _______________________________________________
> users mailing list
> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users

-- 
Jeff Squyres
Cisco Systems