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Subject: Re: [OMPI users] usNIC point-to-point messaging module
From: Jeff Squyres (jsquyres) (jsquyres_at_[hidden])
Date: 2014-03-24 12:12:05


No, this is not a configure issue -- the usnic BTL uses the verbs API.

The usnic BTL should be disqualifying itself at runtime, though, if you don't have usNIC devices.

Are you running on Cisco UCS servers with Cisco VICs, perchance?

If not, could you send the output of "mpirun --mca btl_base_verbose 100 ..."?

On Mar 23, 2014, at 10:35 AM, Ralph Castain <rhc_at_[hidden]> wrote:

> Hmmm...we'll have to check the configure logic as I don't think you should be getting that message. Regardless, it isn't something of concern - you can turn it "off" by adding
>
> -mca btl ^usnic
>
> on your command line, or configuring OMPI --enable-mca-no-build=btl-usnic
>
>
> On Mar 22, 2014, at 10:00 PM, Filippo Spiga <spiga.filippo_at_[hidden]> wrote:
>
>> Dear all,
>>
>> I recompiled Open MPI 1.7.5 a couple of time, I am sure I have been selected openib. However I have some doubts because this message
>>
>> --------------------------------------------------------------------------
>> [[28098,1],8]: A high-performance Open MPI point-to-point messaging module
>> was unable to find any relevant network interfaces:
>>
>> Module: usNIC
>> Host: tesla79
>>
>> Another transport will be used instead, although this may result in
>> lower performance.
>> --------------------------------------------------------------------------
>>
>> keeps popping up. I am really worried there might be a degradation of performance because of this warning. Any clue about where it came from and how I can let it disappear?
>>
>> Thanks in advance,
>> Filippo
>>
>> --
>> Mr. Filippo SPIGA, M.Sc.
>> http://www.linkedin.com/in/filippospiga ~ skype: filippo.spiga
>>
>> «Nobody will drive us out of Cantor's paradise.» ~ David Hilbert
>>
>> *****
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-- 
Jeff Squyres
jsquyres_at_[hidden]
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