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Subject: Re: [OMPI users] btl_openib_cpc_include rdmacm questions
From: Brock Palen (brockp_at_[hidden])
Date: 2011-05-16 10:53:55


On May 16, 2011, at 10:23 AM, Samuel K. Gutierrez wrote:

> Hi,
>
> Just out of curiosity - what happens when you add the following MCA option to your openib runs?
>
> -mca btl_openib_flags 305

You Sir found the magic combination.
I verified this lets IMB and CRASH progress pass their lockup points,
I will have a user test this,
Is this an ok option to put in our environment? What does 305 mean?

Brock Palen
www.umich.edu/~brockp
Center for Advanced Computing
brockp_at_[hidden]
(734)936-1985

>
> Thanks,
>
> Samuel Gutierrez
> Los Alamos National Laboratory
>
> On May 13, 2011, at 2:38 PM, Brock Palen wrote:
>
>> On May 13, 2011, at 4:09 PM, Dave Love wrote:
>>
>>> Jeff Squyres <jsquyres_at_[hidden]> writes:
>>>
>>>> On May 11, 2011, at 3:21 PM, Dave Love wrote:
>>>>
>>>>> We can reproduce it with IMB. We could provide access, but we'd have to
>>>>> negotiate with the owners of the relevant nodes to give you interactive
>>>>> access to them. Maybe Brock's would be more accessible? (If you
>>>>> contact me, I may not be able to respond for a few days.)
>>>>
>>>> Brock has replied off-list that he, too, is able to reliably reproduce the issue with IMB, and is working to get access for us. Many thanks for your offer; let's see where Brock's access takes us.
>>>
>>> Good. Let me know if we could be useful
>>>
>>>>>> -- we have not closed this issue,
>>>>>
>>>>> Which issue? I couldn't find a relevant-looking one.
>>>>
>>>> https://svn.open-mpi.org/trac/ompi/ticket/2714
>>>
>>> Thanks. In csse it's useful info, it hangs for me with 1.5.3 & np=32 on
>>> connectx with more than one collective I can't recall.
>>
>> Extra data point, that ticket said it ran with mpi_preconnect_mpi 1, well that doesn't help here, both my production code (crash) and IMB still hang.
>>
>>
>> Brock Palen
>> www.umich.edu/~brockp
>> Center for Advanced Computing
>> brockp_at_[hidden]
>> (734)936-1985
>>
>>>
>>> --
>>> Excuse the typping -- I have a broken wrist
>>>
>>> _______________________________________________
>>> users mailing list
>>> users_at_[hidden]
>>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>>>
>>>
>>
>>
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