[torqueusers] cpusets in Torque 3.0, memory pressure

Roy Dragseth roy.dragseth at cc.uit.no
Fri Jun 8 08:26:59 MDT 2012


Last time I checked torque killed all jobs on a node when the memory pressure 
limit was exceeded.  See this thread for the details

http://www.clusterresources.com/pipermail/torqueusers/2011-
November/013609.html

r.


On Wednesday, June 06, 2012 21:44:57 Grigory Shamov wrote:


Hi David,

Thanks!

 I've tried to run some chemistry codes,  under Torque 3, with and without 
oversubscription for memory. It seems to work. The pressure  can quickly spike 
up to, say, 13000 with quite moderate swapping.

If there are more than one jobs on the node, and one of them oversubscribes, 
would it create pressure for all the jobs there?

--
Grigory Shamov


--- On Mon, 6/4/12, David Beer <dbeer at adaptivecomputing.com> wrote:


From: David Beer <dbeer at adaptivecomputing.com>
Subject: Re: [torqueusers] cpusets in Torque 3.0, memory pressure
To: "Torque Users Mailing List" <torqueusers at supercluster.org>
Date: Monday, June 4, 2012, 7:27 AM





On Sun, Jun 3, 2012 at 7:47 AM, Grigory Shamov <gas5x at yahoo.com> wrote:


Dear David,



Thanks a lot for your  answer! 


What would be a good starting value for the memory pressure threshold, to 
configure it right? 


I think 1000 is a good starting value.

David
 



--
Grigory Shamov





--- On Fri, 6/1/12, David Beer <dbeer at adaptivecomputing.com> wrote:


From: David Beer <dbeer at adaptivecomputing.com>
Subject: Re: [torqueusers] cpusets in Torque 3.0, memory pressure
To: "Torque Users Mailing List" <torqueusers at supercluster.org>
Date: Friday, June 1, 2012, 1:07 PM






On Fri, Jun 1, 2012 at 11:57 AM, Grigory Shamov <gas5x at yahoo.com> wrote:

Hi,

The Torque 3 changelog says " when cpusets are configured and memory pressure 
enabled, add the ability to check memory pressure for a job. Using 
$memory_pressure_threshold and $memory_pressure_duration in the mom's config, 
the admin sets a threshold at  which a job becomes a problem".

Does it work for non-NUMA setup as well? I mean, if I configure it with --
enable-cpusets only, but --disable-numa-support ?




Grigory,


As long as you set your cpuset up correctly 
(http://www.adaptivecomputing.com/resources/docs/torque/3-0-3/a.cmomconfig.php) 
it will work with or without numa support. 


David
 
--
Grigory Shamov
HPC Analyst,
University of Manitoba




_______________________________________________
torqueusers mailing list
torqueusers at supercluster.org
http://www.supercluster.org/mailman/listinfo/torqueusers






-- 

David Beer | Software Engineer
Adaptive Computing



-----Inline Attachment Follows-----



_______________________________________________
torqueusers mailing list
torqueusers at supercluster.org
http://www.supercluster.org/mailman/listinfo/torqueusers


_______________________________________________
torqueusers mailing list
torqueusers at supercluster.org
http://www.supercluster.org/mailman/listinfo/torqueusers





-- 

David Beer | Software Engineer
Adaptive Computing


-----Inline Attachment Follows-----


_______________________________________________
torqueusers mailing list
torqueusers at supercluster.org
http://www.supercluster.org/mailman/listinfo/torqueusers





-- 

  The Computer Center, University of Tromsø, N-9037 TROMSØ Norway.
	      phone:+47 77 64 41 07, fax:+47 77 64 41 00
        Roy Dragseth, Team Leader, High Performance Computing
	 Direct call: +47 77 64 62 56. email: roy.dragseth at uit.no
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.supercluster.org/pipermail/torqueusers/attachments/20120608/a1c4367f/attachment.html 


More information about the torqueusers mailing list