[GE users] creating a Master queue

Lönroth Erik erik.lonroth at scania.com
Tue May 29 15:19:56 BST 2007


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Followup on this thread... I have trouble getting a single process onto my master-queues. SGE keeps spawning a SLAVE process on the MASTER node...

I tried to follow the instructions from Reuti here:
http://gridengine.sunsource.net/servlets/ReadMsg?list=users&msgNo=20022

I'm trying to run a "fluent" job on 16 CPU:s... And I have something like this in my submit-script:

------------- jobscript.sh ------------
...
...

# Parallel execution request for fluent. Set your number of processors here.
#$ -pe fluent_*_pe 16

#### Spewn MASTER process on a host available in the master(s) queue.
#$ -masterq master.*.q

...
...

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


This is the output from qstat after submission:

327 0.55500 fluent_ben sssler       r     05/29/2007 16:07:32 master.102.q at ts102-2-0.sss.se. MASTER        
                                                                  master.102.q at ts102-2-0.sss.se. SLAVE         
    327 0.55500 fluent_ben sssler       r     05/29/2007 16:07:32 short.102.q at ts102-2-0.sss.se.s SLAVE         
                                                                  short.102.q at ts102-2-0.sss.se.s SLAVE         
                                                                  short.102.q at ts102-2-0.sss.se.s SLAVE         
                                                                  short.102.q at ts102-2-0.sss.se.s SLAVE         
    327 0.55500 fluent_ben sssler       r     05/29/2007 16:07:32 short.102.q at ts102-2-14.sss.se. SLAVE         
                                                                  short.102.q at ts102-2-14.sss.se. SLAVE         
                                                                  short.102.q at ts102-2-14.sss.se. SLAVE         
                                                                  short.102.q at ts102-2-14.sss.se. SLAVE         
    327 0.55500 fluent_ben sssler       r     05/29/2007 16:07:32 short.102.q at ts102-2-15.sss.se. SLAVE         
                                                                  short.102.q at ts102-2-15.sss.se. SLAVE         
                                                                  short.102.q at ts102-2-15.sss.se. SLAVE         
                                                                  short.102.q at ts102-2-15.sss.se. SLAVE         
    327 0.55500 fluent_ben sssler       r     05/29/2007 16:07:32 short.102.q at ts102-2-16.sss.se. SLAVE         
                                                                  short.102.q at ts102-2-16.sss.se. SLAVE         
                                                                  short.102.q at ts102-2-16.sss.se. SLAVE


As you see:
master.102.q at ts102-2-0.sss.se. MASTER        
master.102.q at ts102-2-0.sss.se. SLAVE

... Which is not what I want.

I have set number os slots to "1" in the master queue, and number of processors to "1", with no luck.


Any help or ideas?

/Erik



-----Original Message-----
From: Reuti [mailto:reuti at staff.uni-marburg.de] 
Sent: den 28 maj 2007 21:55
To: users at gridengine.sunsource.net
Subject: Re: [GE users] creating a Master queue


Hi,

Am 28.05.2007 um 21:19 schrieb Milo:

> I have, but I'm still confused as to how exactly it works. Thus far
> when I
> haven't explicitly specified the master queue using the -masterq  
> argument,
> SGE obviously uses my only queue (all.q) for both master and slave.  
> I've
> also noticed that the master node still gets a slave process  
> assigned to it.
> Will this slave process still get spawned on the master queue if I  
> use the
> -masterq argument to qsub?

yes - might happen, if there are still free slots.

> If so, do I have the ability to control this? I
> also don't exactly know how to actually create this new master
> queue with
> the correct settings and such. Could someone point me in the right
> direction?

Just this morning, maybe it's still in your inbox:

http://gridengine.sunsource.net/servlets/ReadMsg?list=users&msgNo=20022

-- Reuti

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