[GE users] SGE memory management

Mag Gam magawake at gmail.com
Wed Sep 24 02:02:28 BST 2008


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Cool. To sum up the kernel takes care of it. This is what I was
looking for. Thanks again Ron!


On Tue, Sep 23, 2008 at 8:51 PM, Ron Chen <ron_chen_123 at yahoo.com> wrote:
> --- On Wed, 9/24/08, Mag Gam <magawake at gmail.com> wrote:
>> Yah, that question says how to do it, but I wanted to learn
>> the internals on exactly how it does it :-)
>
> Then it's not your fault, but rather mine! 8-) I throught your main goal was to find out how to do it and test it.
>
>
> If you want to know how SGE does it, Reuti summarized it in this email:
>
> http://gridengine.sunsource.net/servlets/ReadMsg?list=users&msgNo=25932
>
> And if you want to play with the SGE module that finds the resource usage of the job, and how it enfources job limit by summing up all the processes in a job, you can find some design docs in the SGE source directory.
>
>  -Ron
>
>
>
>
>
>>
>> So it basically sets the ulimit of the process and user to
>> control the
>> memory, eh?
>>
>> Sorry for the redundant question!
>>
>>
>> On Tue, Sep 23, 2008 at 8:34 PM, Ron Chen
>> <ron_chen_123 at yahoo.com> wrote:
>> > Wasn't it asked and answered before?
>> >
>> >
>> http://gridengine.sunsource.net/servlets/ReadMsg?list=users&msgNo=25942
>> >
>> > And for the 2nd question: I believe SGE sets the
>> OS's process resource limit when you submit a job with
>> limit. You can find out the answer by putting
>> "limit" or "ulimit" in the job.
>> >
>> >  -Ron
>> >
>> >
>> > --- On Wed, 9/24/08, Mag Gam
>> <magawake at gmail.com> wrote:
>> >> From: Mag Gam <magawake at gmail.com>
>> >> Subject: [GE users] SGE memory management
>> >> To: users at gridengine.sunsource.net
>> >> Date: Wednesday, September 24, 2008, 8:26 AM
>> >> I am curious how SGE allocates memory to a
>> process.
>> >>
>> >> Lets say you submit a job and you specify to only
>> use 16G
>> >> of memory.
>> >> All the exec hosts have 128GB of memory. Does SGE
>> cap the
>> >> process to
>> >> 16g? I though that was a function of the OS to
>> control how
>> >> memory is
>> >> managed and not SGE. Sorry if this is a newbie
>> question
>> >>
>> >> TIA
>> >>
>> >>
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>> >
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