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

Mon, 28 Jul 2008 11:16:10 -0400
One other option which should kill of processes and cleanup is the orte-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 kill the 
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 kill all the 
remote processes when you kill the job.  

Look at how MPI works.  When you are starting the way you are starting 
MPI (without a batch system) you are using ether ssh or rsh to start the 
remote processes.  Once these are started, the user has no control over 
the remote processes. 

Try killing your mpirun not your 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 version of 
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 the job 
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 others didn't stop.

When I killed the process named orted, the pw.x process in the same 
node stoped immediately,

but the job in the other node were still running.


Do you think there is something wrong with my cluster or openmpi or 
the software named pw.x?



Is there a command for openmpi to force all the process to stop in 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 by OPENMPI

Does the cluster your using use a batch system?  Like SLURM, PBS or other?


If so many have native ways to launch jobs that OMPI can use.  SO that 
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 not easy
    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 to stop 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
    ------------------------------------------------------------------------
    Explore the seven wonders of the world Learn more!
    <http://search.msn.com/results.aspx?q=7+wonders+world&mkt=en-US&form=QBRE>
    _______________________________________________
    users mailing list
    us...@open-mpi.org <mailto:us...@open-mpi.org>
    http://www.open-mpi.org/mailman/listinfo.cgi/users



------------------------------------------------------------------------

Get news, entertainment and everything you care about at Live.com. 
Check it out! <http://www.live.com/getstarted.aspx >

_______________________________________________
users mailing list
us...@open-mpi.org <mailto:us...@open-mpi.org>
http://www.open-mpi.org/mailman/listinfo.cgi/users



------------------------------------------------------------------------

_______________________________________________
users mailing list
us...@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/users



--

=========================
rolf.vandeva...@sun.com
781-442-3043
=========================






















					Reply via email to