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Subject: [OMPI users] Possible regression from 1.2 to 1.3 when BLACS is involved
From: Åke Sandgren (ake.sandgren_at_[hidden])
Date: 2009-03-24 13:17:50


Hi!

We're having problems with code that uses BLACS and openmpi 1.3.x.
When compiled with memory-manager turned on (base only), code using
BLACS either start leaking memory or gets into some kind of deadlock.
The first code-case can be circumvented by using
mpi_leave_pinned_pipeline 0, but the second one could only be solved by
compiling openmpi without memory manager.

Building 1.3.1 with ptmalloc2-internal makes the second code break in
different ways.

Anyone else seen similar problems when using BLACS?

-- 
Ake Sandgren, HPC2N, Umea University, S-90187 Umea, Sweden
Internet: ake_at_[hidden]   Phone: +46 90 7866134 Fax: +46 90 7866126
Mobile: +46 70 7716134 WWW: http://www.hpc2n.umu.se