[scyld-users] how to let bbq migrate batch jobs to compute nodes?

Bishop, Ryan S SAJ Contractor Ryan.S.Bishop at saj02.usace.army.mil
Tue Mar 14 09:32:57 PST 2006

We use a batch script that sets a variable, something like "NODE='beomap
--nolocal'"  and then runs a bpsh NODE [command].  That will issue the job to
the next free node.  YMMV - make sure to check out the beomap and bpsh man


-----Original Message-----
From: scyld-users-bounces at beowulf.org
[mailto:scyld-users-bounces at beowulf.org] On Behalf Of Weirong Zhu
Sent: Tuesday, March 14, 2006 1:23 AM
To: scyld-users at beowulf.org
Subject: [scyld-users] how to let bbq migrate batch jobs to compute nodes?

We have just got our new Penguin Computing cluster.
Since one of our main purpose it to submit a lot of batch jobs to the
cluster, I tried to learn how to use bbq provided by scyld.

As a simple test,

(1) I wrote a C program, which has a while(1) loop.  Then I compile it to
generate the binary a.out.
(2) Write a simple job file with only one command "./a.out".  And name this
file as run.
(3) submit the job by "batch now -f run"
(4) do step (3) a lot of times.

Then by using command "bbq" I saw a lot of jobs were listed.  And I assume
those jobs would be migrated to computing nodes.

However,  when I use "beostat -C", find all the computing nodes are actually
idle, and all those instances are running on master node.

Did I do something wrong to submit my simple batch jobs?
How should I do?

Moreover,  I tried to use "atrm" to delete my jobs from the queue. After
that, when I use "bbq" command, there is nothing in the queue. However, when
I did a "top" or "ps -fu myname".  Those jobs are still running on the master
Did I do something wrong to delete a batch job from the queue?
How should I do?

I am really confused with the bbq batch system and it seems that there is no
PBS avaliable on this cluster.

Any help and suggestions are welcome!


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