Hi,
When I try to select different alltoall algorithms using command line:
$> mpirun -mca coll_tuned_use_dynamic_rules 1 -mca
coll_tuned_alltoall_algorithm 2 IMB-MPI alltoall
it just crashes.
I suppose that "coll_tuned_use_dynamic_rules" and
"coll_tuned_alltoall_algorithm" should be used together when no extra rule file is
specified, is that correct? But whatever algorithm I try to use, the application just crashes.
Could this be a bug?
The problem seems only exists in Open MPI v1.4, with 1.3 and 1.3.3, there isn't
such problem.
Thanks,
Shiqing
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Shiqing Fan http://www.hlrs.de/people/fan
High Performance Computing Tel.: +49 711 685 87234
Center Stuttgart (HLRS) Fax.: +49 711 685 65832
Address:Allmandring 30 email: f...@hlrs.de
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