[GE users] Maximum ram usage of all jobs

reuti reuti at staff.uni-marburg.de
Thu Nov 6 14:43:13 GMT 2008


Am 06.11.2008 um 15:21 schrieb Pedro G:

> Hello Reuti,
> I had already read that topic and other similars.
> But it is not what I want to do. Maybe it is not possible to do  
> what I want.
> Anyway I will try to explain it again, my English is not good but I
> will do my best.
> Suppose I launch 1 job, which uses 6GB ram.
> Later I launch another one, which try to use other 6GB ram.
> Since my system only have 9GB, it starts swapping.
> I could set up sge to only use 4.5 GB per job, but if there is only a
> job I am "wasting" 4.5GB ram.

you are not wasting it. If the tho job is happy with 4.5GB, why  
request more?

> I want sge to dynamically manage how
> much ram is used in every host.

This I discussed with Hugo later in this thread:


-- Reuti

> Thank you very much :)
> On 11/6/08, reuti <reuti at staff.uni-marburg.de> wrote:
>> Hi Pedro,
>> Am 06.11.2008 um 12:42 schrieb Pedro G:
>>> I have a cluster with 2 nodes. Each node has 9GB of ram.
>>> I would like to limit the all jobs ram usage to the physical ram I
>>> have. Now If I launch too many jobs, memory usage goes up to +15 GB
>>> using swap.
>>> This makes the node very slow due to swap usage.
>> the list often provides tips and hints for problems, which arise from
>> time to time. It's of course not easy to find them always under the
>> subject you are thinking of, but just reading all the post will
>> provide a large pool of information over time.
>> http://gridengine.sunsource.net/ds/viewMessage.do?
>> dsForumId=38&dsMessageId=76438
>> -- Reuti
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