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Subject: Re: [OMPI devel] poor btl sm latency
From: Edgar Gabriel (gabriel_at_[hidden])
Date: 2012-02-16 10:51:15


just a stupid question: in another sm-related thread the value of the
$TMPDIR variable was the problem, could this be the problem here as well?

Edgar

On 2/16/2012 9:30 AM, Matthias Jurenz wrote:
> On Thursday 16 February 2012 16:21:10 Jeff Squyres wrote:
>> On Feb 16, 2012, at 9:39 AM, Matthias Jurenz wrote:
>>> However, the latencies are constant now but still too high:
>>>
>>> $ mpirun -np 2 --bind-to-core --cpus-per-proc 2 ./NPmpi_ompi1.5.5 -S -u
>>> 12 -n 100000
>>
>> Can you run:
>>
>> mpirun -np 2 --bind-to-core --cpus-per-proc 2 hwloc-bind --get
>>
>> I want to verify that the processes are actually getting bound to the
>> correct places.
>
> Sure:
> $ mpirun -np 2 --bind-to-core --cpus-per-proc 2 hwloc-bind --get
> 0x00000003
> 0x0000000c
>
> Matthias
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-- 
Edgar Gabriel
Associate Professor
Parallel Software Technologies Lab      http://pstl.cs.uh.edu
Department of Computer Science          University of Houston
Philip G. Hoffman Hall, Room 524        Houston, TX-77204, USA
Tel: +1 (713) 743-3857                  Fax: +1 (713) 743-3335