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Subject: Re: [OMPI users] [openib] segfault when using openib btl
From: Shamis, Pavel (shamisp_at_[hidden])
Date: 2010-09-29 13:49:02


Terry,
Ishai Rabinovitz is HPC team manager (I added him to CC)

Eloi,

Back to issue. I have seen very similar issue long time ago on some hardware platforms that support relaxed ordering memory operations. If I remember correct it was some IBM platform.
Do you know if relaxed memory ordering is enabled on your platform ? If it is enabled you have to disable eager rdma.

Regards,
Pasha

On Sep 29, 2010, at 1:04 PM, Terry Dontje wrote:

Pasha, do you by any chance know who at Mellanox might be responsible for OMPI working?

--td

Eloi Gaudry wrote:
 Hi Nysal, Terry,
Thanks for your input on this issue.
I'll follow your advice. Do you know any Mellanox developer I may discuss with, preferably someone who has spent some time inside the openib btl ?

Regards,
Eloi

On 29/09/2010 06:01, Nysal Jan wrote:
Hi Eloi,
We discussed this issue during the weekly developer meeting & there were no further suggestions, apart from checking the driver and firmware levels. The consensus was that it would be better if you could take this up directly with your IB vendor.

Regards
--Nysal
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Terry D. Dontje | Principal Software Engineer
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Oracle - Performance Technologies
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