On 15/04/13 04:40 PM, Marcelino Suzuki wrote:
> Hello and thanks for the answer.
>
> I did undestand that and the directory does not exist when I lauch
> the job. I do not get this error from the fist 4 cores, but after
> core 5, I get the error in the output from all cores. The weirdest is
> that I had these messages in the outfile of a run that completed, and
> that is why I was wondering if that is normal.
>
Hi,
This is a race condition affecting version 2.1.0.
It was fixed by this commit:
commit 73ada528e1d17105e17df524fdb60bdd03b40560
Author: Sébastien Boisvert <sebastien.boisver...@ulaval.ca>
Date: Fri Feb 8 23:55:34 2013 -0500
fix a race condition during directory probing
Resolves-bug: https://github.com/sebhtml/ray/issues/125
Signed-off-by: Sébastien Boisvert <sebastien.boisver...@ulaval.ca>
https://bitbucket.org/sebhtml/ray/commits/73ada528e1d17105e17df524fdb60bdd03b40560
The upcoming v2.2.0 release will include this bug fix.
This bug was introduced by the mini-ranks code.
For example, if you are using a single machine with 32 cores,
you can use
mpiexec -n 32 Ray ...
or you can use
mpiexec -n 4 Ray -mini-ranks-per-rank 7 ...
Mini-ranks are experimental, but they seems to work nicely on SMP NUMA machines.
> Marcelino
>
>
> On Apr 15, 2013, at 10:14 PM, Sébastien Boisvert wrote:
>
>> On 14/04/13 04:45 PM, Marcelino Suzuki wrote:
>>> Hello Sebastien
>>>
>>> I am having issues with assembling a 3.2 M read ion torrent dataset
>>> using Loadleveler for an cluster intel iDataplex, with the mpi job
>>> crashing during execution. It might be an issue with the cluster (I
>>> got this message from the system administrator: En ce moment on a des
>>> soucis de réseau IB et de baie de disque), but since I've seen a
>>> Error
>>> in the output files coming from some cores using the -output-filename
>>> option, and just want to make sure I am not missing some detail:
>>>
>>> Error, crambe/ already exists, change the -o parameter to another
>>> value
>>>
>>> crambe is my -o directory
>>>
>>> Is that normal behavior? I noticed I got the same errors in a
>>> outfile of the same assembly that did go through to the end.
>>
>> Ray will not overwrite an existing directory.
>>
>> You must change use another directory name.
>>
>>>
>>> Thanks
>>>
>>> Marcelino
>>> =
>>> =
>>> =
>>> =
>>> =
>>> =
>>> =
>>> =====================================================================
>>> oOOOOo Marcelino Suzuki, Assoc. Professor,
>>> Intl. Chair, Platform Responsible
>>> oOOO Univ Pierre Marie Curie (Paris 6) -
>>> Observatoire Océanologique de Banyuls
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>>> d'Océanographie Microbienne (LOMIC)
>>> .oOOOOOOOo. Marine Biodiversity and
>>> Biotechnology (bio2mar) Platform
>>> .oOOOOOOOOOoo. suz...@obs-banyuls.fr http://bit.ly/fq3nbE
>>> bio2mar.obs-banyuls.fr
>>> .oOOOOOOOOOOOooooo. Ave du Fontaulé, Banyuls-sur-Mer 66650, France
>>> +33(0)430192401
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>>>
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apps and a phenomenal toolset for data science. Developers can use
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