[gridengine users] Load sensors

Earl Lazarus earl.lazarus at gmail.com
Fri Apr 20 14:28:48 UTC 2012


Yes the load sensor is under my home directory which is visible on all
machines.  Would it be a true statement that my load sensor should be
running as soon as I specify it in the host configuration?  I need not
submit jobs that reference the load that it is measuring.

On Thu, Apr 19, 2012 at 9:30 PM, Ron Chen <ron_chen_123 at yahoo.com> wrote:

> I don't have access to a Unix machine now, so I assume the script works.
>
> However, it is always the execution daemons that run the load sensors, so
> make sure the load sensor is available on all the machines.
>
>  -Ron
>
>
>
> ________________________________
> From: Earl Lazarus <earl.lazarus at gmail.com>
> To: Rayson Ho <rayson at scalablelogic.com>
> Cc: users at gridengine.org
> Sent: Thursday, April 19, 2012 9:49 PM
> Subject: Re: [gridengine users] Load sensors
>
>
> Here is  the load sensor...it basically checks to see if a server is
> running on the host, returning 1 if yes
> and 0 if no.  It currently contains diagnostic prints to my home
> directory.   It runs fine from the command prompt.
>
> When is a user provided load monitor actually run?  Every time the
> scheduler runs?
>
> #!/bin/bash
> #PURPOSE  SGE load monitor
> #
> #
> good(){
>    echo "begin"
>    echo "$hst:earl_ecs_jun:1"
>    echo "end"
> }
> bad(){
>    echo "begin"
>    echo "$hst:earl_ecs_jun:0"
>    echo "end"
> }
>    echo START `date`  >>/home/elazarus/LD
>    hst=$(uname -n)
>    pf="PID_FILE"
>    while [ 1 ] ; do
>       read input
>       result=$?
>       echo READ `date`  >>/home/elazarus/LD
>       if [ $result != 0 ] ; then
>          exit 1
>       fi
>       if [ "$input" = "quit" ] ; then
>          echo END `date`  >>/home/elazarus/LD
>          exit 0
>       fi
> #     --ASSERT VALID QUERY
>       tmpname=/tmp/jaeger/0p1/EDB/ECS_JUN_SS3_SL4h
>       if [ -d $tmpname ] ; then
>          cd $tmpname
> #        --EXAMINE THE PID_FILE
>          if [ -e $pf ] ; then
> #           --FOUND PID_FILE
>             pid=$(cat $pf)
>             l=$(ps h -p $pid |wc -l)
>             if [ $l -eq 0 ] ; then
> #              --CANNOT FIND THE SPECIFIED PROCESS
>                bad
>             else
> #              --IT'S RUNNING!!
>                good
>             fi
>          else
> #           --NO PID_FILE
>             bad
>          fi
>       else
> #        --NO SERVER DIRECTORY
>          bad
>       fi
>    done
>
>
>
>
> On Thu, Apr 19, 2012 at 7:18 PM, Rayson Ho <rayson at scalablelogic.com>
> wrote:
>
> Can you post your load sensor, or at least the main structure of your
> >load sensor script??
> >
> >If you run the script interactively, what do you get??
> >
> >Rayson
> >
> >
> >
> >
> >On Thu, Apr 19, 2012 at 8:14 PM, Earl Lazarus <earl.lazarus at gmail.com>
> wrote:
> >> I followed all of those directions...it just doesn't run.  Permissions
> are
> >> 777.
> >>  I put an "echo START `date` >>/home/<myid>/LD"
> >>
> >> The file is always empty.
> >>
> >>
> >> On Thu, Apr 19, 2012 at 12:37 PM, Rayson Ho <rayson at scalablelogic.com>
> >> wrote:
> >>>
> >>> There is not a lot of actual "REQUIREMENTS" for a load sensor. As long
> >>> as it prints the proper values to standard output, then it is good
> >>> enough in most cases.
> >>>
> >>> You can get more detail from Oracle's doc:
> >>>
> >>>
> >>>
> http://docs.oracle.com/cd/E24901_01/doc.62/e21978/configuration.htm#sthref182
> >>>
> >>> Rayson
> >>>
> >>>
> >>>
> >>> On Thu, Apr 19, 2012 at 1:31 PM, Earl Lazarus <earl.lazarus at gmail.com>
> >>> wrote:
> >>> > Based upon earlier postings, it looks like a load sensor will solve
> my
> >>> > problem.  Others have
> >>> > pointed to the following link (which contains an example of a load
> >>> > sensor
> >>> > script).
> >>> >
> >>> > http://gridscheduler.sourceforge.net/howto/loadsensor.html
> >>> >
> >>> > The example script at this site contains a "read" statement and
> seems to
> >>> > communicate with SGE via "echo".  Is there someplace where I can
> >>> > find the actual REQUIREMENTS for a load sensor script instead of
> >>> > having to reverse engineer the requirements from an example?
> >>> >
> >>> > _______________________________________________
> >>> > users mailing list
> >>> > users at gridengine.org
> >>> > https://gridengine.org/mailman/listinfo/users
> >>> >
> >>
> >>
> >>
> >> _______________________________________________
> >> users mailing list
> >> users at gridengine.org
> >> https://gridengine.org/mailman/listinfo/users
> >>
> >
>
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