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From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2007-04-19 08:17:07


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)
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-- 
Jeff Squyres
Cisco Systems