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Subject: Re: [OMPI devel] [OMPI svn] svn:open-mpi r26077 (fwd)
From: Hjelm, Nathan T (hjelmn_at_[hidden])
Date: 2012-03-02 11:23:13


They symptom is that the process hangs forever. Its difficult to differentiate this bug and simply running out of registered memory.

The bug is hit if the pml is using the mpi_leave_pinned protocol and the btl returns an error from its send function.

-Nathan

________________________________________
From: devel-bounces_at_[hidden] [devel-bounces_at_[hidden]] on behalf of Christopher Samuel [samuel_at_[hidden]]
Sent: Thursday, March 01, 2012 7:58 PM
To: devel_at_[hidden]
Subject: Re: [OMPI devel] [OMPI svn] svn:open-mpi r26077 (fwd)

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On 02/03/12 02:56, Nathan Hjelm wrote:

> Found a pretty nasty frag leak (and a minor one) in ob1 (see
> commit below). If this fix addresses some hangs we are seeing on
> infiniband LANL might want a 1.4.6 rolled (or a faster rollout for
> 1.6.0).

What symptoms would an affected job show? Does it fail with an OMPI
error or does it just hang using 0% CPU?

cheers,
Chris
- --
    Christopher Samuel - Senior Systems Administrator
 VLSCI - Victorian Life Sciences Computation Initiative
 Email: samuel_at_[hidden] Phone: +61 (0)3 903 55545
         http://www.vlsci.unimelb.edu.au/

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