[Nek5000-users] How to run Nek5000 in cluster based on mpich?

[nek5000-users at lists.mcs.anl.gov]

Hi Xianbei,

You need to be certain to use the full script, but change the mpiexec command
to reflect what is on your system.

The script sets up some default files that nek5000 will be looking for when
it starts (specifically, SESSION.NAME)

Paul

________________________________
From: nek5000-users-bounces at lists.mcs.anl.gov [nek5000-users-bounces at lists.mcs.anl.gov] on behalf of nek5000-users at lists.mcs.anl.gov [nek5000-users at lists.mcs.anl.gov]
Sent: Wednesday, June 04, 2014 9:23 PM
To: Nek5000
Subject: Re: [Nek5000-users] How to run Nek5000 in cluster based on mpich?

Hi, Paul:
     I read the nekbmpi file and find this:
    mpiexec -np $2 ./nek5000 > $1.log.$2 &
    so the nek5000 is executed by mpi. In mpich, the common way to run a executable program can be run as :
    mpiexec -n XX ./nek5000
    However, when I type this:
    mpiexec -n 32 ./nek5000 > turbChannel.log &
    error returns like:
     Fortran runtime error: File './NEK.rea' does not exist
Best reguards
Xianbei




At 2014-06-04 11:20:52, nek5000-users at lists.mcs.anl.gov wrote:

Hi Xianbei,

Have a look at the nekbmpi script and modify to match the job submission
procedure on your cluster.

Paul

________________________________
From: nek5000-users-bounces at lists.mcs.anl.gov<mailto:nek5000-users-bounces at lists.mcs.anl.gov> [nek5000-users-bounces at lists.mcs.anl.gov<mailto:nek5000-users-bounces at lists.mcs.anl.gov>] on behalf of nek5000-users at lists.mcs.anl.gov<mailto:nek5000-users at lists.mcs.anl.gov> [nek5000-users at lists.mcs.anl.gov<mailto:nek5000-users at lists.mcs.anl.gov>]
Sent: Wednesday, June 04, 2014 9:34 AM
To: Nek5000
Subject: [Nek5000-users] How to run Nek5000 in cluster based on mpich?

Hi,all:
   I have just built a small cluster of computers, based on mpich.I have tested the capability of this cluster, each node can be called freely.  Now I want to do my simulation in it, however, I don't know how to run Nek. As known, on only 1 computer, one can do like this:
  nekmpi XXX X
or
  nekbmpi XXX X
  while this is not the case in the cluster! I believe most of you have tried this, I'll appreciate if anyone can give me some advice.
Best regards
Xianbei


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