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

[Weirong Zhu]

I just tried this method. It's working fine with "bbq" now. Thanks very 
much.

One more question, after I using "atrm" to delete jobs from the queue, 
those jobs disappeared from the queue. However, when I do a "ps", they 
are still there.

Any suggestions?

Thanks for your help!

-- Weirong

Bishop, Ryan S SAJ Contractor wrote:

>We use the methodology I described below with batch, which feeds bbq.  Works
>like a charm. 
>
>-----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 1:25 PM
>To: scyld-users at beowulf.org
>Subject: Re: [scyld-users] how to let bbq migrate batch jobs to compute
>nodes?
>
>Thanks for the information.
>
>This seems a feasible method. Thanks very much.
>
>Have you ever tried bbq?  Since with a batch system, it will be easier to
>control jobs.  For example, you can watch the status of all the jobs in the
>queue, and easily delete a job from a queue.  Now if we do the batch
>ourselves,  we need to use "ps" to find the corresponding pid, and kill the
>job.
>
>So I still want to know how make use of "bbq".
>
>-- Weirong
>
>Bishop, Ryan S SAJ Contractor wrote:
>
>  
>
>>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 pages.
>>
>>--Schuyler
>>
>>-----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 node.
>>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!
>>
>>Regards,
>>Weirong
>>
>>
>>
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>> 
>>
>>    
>>
>
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