From: Maxime Boissonneault (maxime.boissonneault_at_calculquebec.ca)
Date: Fri Aug 22 2014 - 08:22:43 CDT
There are 8 K20 GPUs per node.
I was hoping to be able to use the multicore binaries instead of the MPI
one.
Maxime
Le 2014-08-22 09:21, Norman Geist a écrit :
> How many GPUs do you have?
>
> Norman Geist.
>
>
>> -----Ursprüngliche Nachricht-----
>> Von: Maxime Boissonneault [mailto:maxime.boissonneault_at_calculquebec.ca]
>> Gesendet: Freitag, 22. August 2014 14:45
>> An: Norman Geist
>> Betreff: Re: AW: namd-l: FATAL ERROR: PME offload requires exactly one
>> CUDA device per process.
>>
>> Threads do not work.
>>
>> So that means that it is impossible to do PME offload on multiple GPUs
>> without MPI.
>>
>> Thanks,
>>
>> Maxime
>>
>> Le 2014-08-22 08:44, Norman Geist a écrit :
>>> I guess the message tells everything. You need to start more
>> processes.
>>> Maybe also threads will work so +ppn
>>>
>>> Norman Geist.
>>>
>>>> -----Ursprüngliche Nachricht-----
>>>> Von: owner-namd-l_at_ks.uiuc.edu [mailto:owner-namd-l_at_ks.uiuc.edu] Im
>>>> Auftrag von Maxime Boissonneault
>>>> Gesendet: Freitag, 22. August 2014 13:40
>>>> An: Namd Mailing List
>>>> Betreff: namd-l: FATAL ERROR: PME offload requires exactly one CUDA
>>>> device per process.
>>>>
>>>> Hi,
>>>> I'm getting this error for some computations using the Multicore
>>>> binary.
>>>> FATAL ERROR: PME offload requires exactly one CUDA device per
>> process.
>>>> I was wondering, is it a matter of configuration of the problem, or
>>>> just
>>>> of the problem size ? I understand I can use the MPI binary to
>> address
>>>> that and use multiple GPUs, but I'm wondering if I can use the
>>>> multicore
>>>> one (because it performs slightly better than the MPI one).
>>>>
>>>>
>>>> Thanks,
>>>>
>>>>
>>>> --
>>>> ---------------------------------
>>>> Maxime Boissonneault
>>>> Analyste de calcul - Calcul Québec, Université Laval
>>>> Ph. D. en physique
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>>
>> --
>> ---------------------------------
>> Maxime Boissonneault
>> Analyste de calcul - Calcul Québec, Université Laval
>> Ph. D. en physique
>
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-- --------------------------------- Maxime Boissonneault Analyste de calcul - Calcul Québec, Université Laval Ph. D. en physique
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