[Pw_forum] running PWSCF on IB-based cluster

[Axel Kohlmeyer]

On Sat, Aug 30, 2014 at 4:44 AM, 高星 <xinggao at impcas.ac.cn> wrote:
> Dear Paolo,
>
> Thanks a lot for your quick response! We are using intel compiler and
> openmpi. Actually, someone else configured our cluster, and I had to use
> mpirun with option "bind-to-core" to run a job over more than one nodes. If

i seriously doubt that. rather you should discuss this with the person
that configured the cluster and get an answer that is consistent with
the existing configuration.

> I do not use "--bind-to-core" option, the job will be submitted to only one
> node with np processors. There was no problem to run other program with
> "--bind-to-core" option except QE, for which I got "processor affinity
> failure". That's why I posted my question on pw_forum. Thanks again for your

this explanation doesn't make sense. the bind-to-core option does
nothing like that. and it has definitely nothing to do with QE
it sounds more like you do not provide a suitable hostfile. please
spend some time going over the OpenMPI documentation, compile a simple
MPI test program and experiment with that how to run properly on your
cluster. if you have further problems, you should post to the OpenMPI
mailing list, or bug your provider again.

axel.

> reply!
>
> Best,
>
> Xing
>
>
>> -----原始邮件-----
>> 发件人: "Paolo Giannozzi" <paolo.giannozzi at uniud.it>
>> 发送时间: 2014年8月29日 星期五
>> 收件人: "PWSCF Forum" <pw_forum at pwscf.org>
>> 抄送:
>> 主题: Re: [Pw_forum] running PWSCF on IB-based cluster
>
>>
>> QE knows nothing about which processor is on which node.
>> It must be related to the MPI libraries ("openmpi" and
>> "intel mpi" are different, by the way, and one should
>> be careful not to mix up the two) and to how MPI is
>> started on your machine
>>
>> P.
>>
>> On Fri, 2014-08-29 at 17:53 +0800, 高星 wrote:
>> >
>> > Dear QE community,
>> >
>> > We have an infini-band based cluster with 8 computing nodes and each
>> > nodes contains 16 cores. I compiled QE package on this cluster
>> > successfully with compiler mpif90 (openmpi intel compiler) and there
>> > was no problem to run  pw.x on one node with 16 processors. However,
>> > when I tried to use two nodes (that is, -np 32), I met "processor
>> > affinity failure". It says, "an attempt to set processor affinity has
>> > failed - please check to ensure that your system supports such
>> > functionality. If so, then this is probably something that should be
>> > reported to the OMPI developers". Actually, there is no such problem
>> > when I run other program. I am wondering if someone else met the
>> > similar question before? And please give me any hint which may help me
>> > on this problem! Thanks in advance!
>> >
>> > Best,
>> >
>> > Xing
>> >
>> >
>> >
>> >
>> >
>> >
>> > _______________________________________________
>> > Pw_forum mailing list
>> > Pw_forum at pwscf.org
>> > http://pwscf.org/mailman/listinfo/pw_forum
>>
>> --
>>  Paolo Giannozzi, Dept. Chemistry&Physics&Environment,
>>  Univ. Udine, via delle Scienze 208, 33100 Udine, Italy
>>  Phone +39-0432-558216, fax +39-0432-558222
>>
>> _______________________________________________
>> Pw_forum mailing list
>> Pw_forum at pwscf.org
>> http://pwscf.org/mailman/listinfo/pw_forum
>
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-- 
Dr. Axel Kohlmeyer  akohlmey at gmail.com  http://goo.gl/1wk0
College of Science & Technology, Temple University, Philadelphia PA, USA
International Centre for Theoretical Physics, Trieste. Italy.