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Subject: Re: [OMPI devel] trac 1857: SM btl hangs when msg >=4k
From: Eugene Loh (Eugene.Loh_at_[hidden])
Date: 2009-04-06 19:56:30


George Bosilca wrote:

> I got some free time (yeh haw) and took a look at the OB1 PML in
> order to fix the issue. I think I found the problem, as I'm unable to
> reproduce this error.

Sorry, this sentence has me baffled. Are you unable to reproduce the
problem before the fixes or afterwards? The first step is to reproduce
the problem, right? To do so:

A) Back out r20944. Easy way to do that is just

    % setenv OMPI_MCA_mpool_sm_min_size 0

B) Check that osu_bw.c hangs when using sm and you reach rendezvous
message size.

C) Introduce your changes and make sure that osu_bw.c runs to completion.

> Can you please give it a try with 20946 and 20947 but without 20944?

osu_bw.c hangs for me. The PML fix did not seem to work.