[GE users] app that uses all cores on a host

stephendennis sdennis at univaud.com
Wed Sep 2 15:12:10 BST 2009


Hi John

Your applications requirements sound like a perfect excuse to
use exclusive scheduling.  

You need GE 6.2u3, and follow these very simple directions.
http://wikis.sun.com/display/gridengine62u3/Configuring+Exclusive+Scheduling

Stephen
________________________________________
From: cjf001 [john.foley at motorola.com]
Sent: Tuesday, September 01, 2009 11:01 AM
To: users at gridengine.sunsource.net
Subject: Re: [GE users] app that uses all cores on a host

crtierney42 wrote:

> cjf001 wrote:
>
>>Guys -
>>
>>Don't know if this is common or easy or not, but I figured I'd ask here
>>first....
>>
>>I'm adding a new app to our cluster - Agilent's "Momentum". This simulator
>>just runs on a single host at a time (ie, no parallel environment), but
>>it's "smart" enough to use all the available CPUs and cores on the host
>>it's running on.
>>
>>So, I think this is going to be a problem for SGE. It's going to think
>>it's assigning a job to 1 slot, when in reality it's going to use all
>>the slots on that host. Also, on the flip side, if there's a single slot
>>available on a multi-core host, it might assign the Momemtum job to that
>>slot, but then Momentum will take over all the cores and interfere with
>>the other jobs running there.
>>
>>Is there a graceful way of handling this kind of app ? I'm using SGE6.2_u2.
>>
>>     Thanks,
>>
>>       John
>>
>>
>>
>
>
> You could set the number of slots on the host to one (use qconf -se for
> each host, under complex_values set slots=1).  Or, you could create
> a parallel environment, set the allocation_rule to pe_slots, then ensure that
> all users always request the full number of slots on each host (with a wrapper
> script).
>
> Craig
>
> ------------------------------------------------------
> http://gridengine.sunsource.net/ds/viewMessage.do?dsForumId=38&dsMessageId=213078
>
> To unsubscribe from this discussion, e-mail: [users-unsubscribe at gridengine.sunsource.net].

Thanks - I think I will use your second suggestion - it seems to work OK.

      John


--
###########################################################################
# John Foley                          # Location:  IL93-E1-21S            #
# IT & Systems Administration         # Maildrop:  IL93-E1-35O            #
# Antenna & Mechanical Simulation Grp #    Email: john.foley at motorola.com #
# Motorola, Inc. -  Mobile Devices    #    Phone: (847) 523-8719          #
# 600 North US Highway 45             #      Fax: (847) 523-5767          #
# Libertyville, IL. 60048  (USA)      #     Cell: (847) 460-8719          #
###########################################################################
                 (this email sent using Mozilla on Windows)

------------------------------------------------------
http://gridengine.sunsource.net/ds/viewMessage.do?dsForumId=38&dsMessageId=215321

To unsubscribe from this discussion, e-mail: [users-unsubscribe at gridengine.sunsource.net].


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


Notice from Univa UD Postmaster:


This email message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. This message has been content scanned by the Univa UD Tumbleweed MailGate.



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

------------------------------------------------------
http://gridengine.sunsource.net/ds/viewMessage.do?dsForumId=38&dsMessageId=215459

To unsubscribe from this discussion, e-mail: [users-unsubscribe at gridengine.sunsource.net].



More information about the gridengine-users mailing list