Re: [OMPI users] How to cease the process triggered by OPENMPI

Jeff Squyres Mon, 28 Jul 2008 15:47:49 -0400

orte-clean a new feature in v1.3.  Rolf is just excited about it.  ;-)

(actually, I think it wasn't ready for prime time in the v1.2 seriesso we pulled it from the 1.2 distributions)



On Jul 28, 2008, at 11:23 AM, Brock Palen wrote:

I don't see this this command in my 1.2.6 install. There also isn'ta man page.
Brock Palen
www.umich.edu/~brockp
Center for Advanced Computing
bro...@umich.edu
(734)936-1985



On Jul 28, 2008, at 11:15 AM, Rolf Vandevaart wrote:
One other option which should kill of processes and cleanup is theorte-clean command. In your case, you could do the following:
mpirun -hostfile ~/hostfile --pernode orte-clean

There is a man page for it also.

Rolf

Brock Palen wrote:
You would be much better off to not use nohup, and then just killthe mpirun.What I mean is a batch system (http://www.clusterresources.com/pages/products/torque-resource-manager.php). Most batch systems have a launching system that lets you killall the remote processes when you kill the job. Look at how MPIworks. When you are starting the way you are starting MPI(without a batch system) you are using ether ssh or rsh to startthe remote processes. Once these are started, the user has nocontrol over the remote processes. Try killing your mpirun notyour orted or pw.x. You will be much happier with a batch system.Or make a script that ssh to hostfile and kills pw.x on all of them.
Brock Palen
www.umich.edu/~brockp
Center for Advanced Computing
bro...@umich.edu <mailto:bro...@umich.edu>
(734)936-1985
On Jul 27, 2008, at 2:04 PM, vega lew wrote:
Dear Brock Palen,

Thank you for your responding.
My linux is redhat enterprise 4. My compiler is 10.1.015 versionof intel fortran and intel c.
You said 'when the job is killed all the children are also'
But I started my OPENMPI job using the nohup command to put thejob background like this," nohup mpirun -hostfile ~/hostfile -np 64 pw.x < input > output& ".
When I killed one of the process named pw.x, all the othersdidn't stop.When I killed the process named orted, the pw.x process in thesame node stoped immediately,
but the job in the other node were still running.
Do you think there is something wrong with my cluster or openmpior the software named pw.x?
Is there a command for openmpi to force all the process to stopin the cluster or a list of nodes to stop.
Vega Lew (weijia liu)
PH.D Candidate in Chemical Engineering
State Key Laboratory of Materials-oriented Chemical Engineering
College of Chemistry and Chemical Engineering
Nanjing University of Technology, 210009, Nanjing, Jiangsu, China

------------------------------------------------------------------------
From: bro...@umich.edu <mailto:bro...@umich.edu>
Date: Sat, 26 Jul 2008 12:52:08 -0400
To: us...@open-mpi.org <mailto:us...@open-mpi.org>
Subject: Re: [OMPI users] How to cease the process triggered byOPENMPI
Does the cluster your using use a batch system? Like SLURM, PBSor other?
If so many have native ways to launch jobs that OMPI can use. SOthat when the job is killed all the children are also.
Brock Palen
www.umich.edu/~brockp
Center for Advanced Computing
bro...@umich.edu <mailto:bro...@umich.edu>
(734)936-1985



On Jul 26, 2008, at 12:25 PM, vega lew wrote:

   Dear all,

   I have enjoyed the openmpi a couple of days. With the help of
   openmpi I could run ESPRESSO efficiently.

   I started the mpi-job by the openmpi command like this,
" nohup mpirun -hostfile ~/hostfile -np 64 pw.x < input >output &".
When I want to stop the job before it finished, I find it noteasy
   to stop all the process manually. When I killed the process
   in one node of the cluster, the processes in other nodes were
   still running. So I must ssh to every node, find the
   process id and kill the process. If there are 100 processors or
   more for one mpi job, the situation even worse.
Is there a command for openmpi to force all the process tostop in
   the cluster or a list of nodes to stop.
   vega

   Vega Lew （weijia liu)
   PH.D Candidate in Chemical Engineering
   State Key Laboratory of Materials-oriented Chemical Engineering
   College of Chemistry and Chemical Engineering
Nanjing University of Technology, 210009, Nanjing, Jiangsu,China------------------------------------------------------------------------
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Re: [OMPI users] How to cease the process triggered by OPENMPI

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