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Subject: Re: [OMPI devel] regression with derived datatypes
From: Hjelm, Nathan T (hjelmn_at_[hidden])
Date: 2014-05-08 03:43:04

If you can get me the backtrace from one of the crash core files I would like to see what is going on there.

From: devel [devel-bounces_at_[hidden]] on behalf of Gilles Gouaillardet [gilles.gouaillardet_at_[hidden]]
Sent: Thursday, May 08, 2014 1:32 AM
To: Open MPI Developers
Subject: Re: [OMPI devel] regression with derived datatypes


you do not need any hardware, just download MPSS from Intel and install it.
make sure the mic kernel module is loaded *and* you can read/write to the
newly created /dev/mic/* devices.

/* i am now running this on a virtual machine with no MIC whatsoever */

i was able to improve things a bit for the new attached test case
/* send MPI_PACKED / recv newtype */
with the attached unpack.patch.

it has to be applied on r31678 (aka the latest checkout of the v1.8 branch)

with this patch (zero regression test so far, it might solve one problem
but break anything else !)

mpirun -np 2 -host localhost --mca btl,scif,vader ./test_scif2
works fine :-)


mpirun -np 2 -host localhost --mca btl scif,vader ./test_scif2
still crashes (and it did not crash before r31496)

i will provide the output you requested shortly