[GE users] Can high priority jobs suspend low priority jobs and use their resources?
seandavi at gmail.com
Thu Apr 29 18:38:26 BST 2010
[ The following text is in the "utf-8" character set. ]
[ Your display is set for the "ISO-8859-10" character set. ]
[ Some characters may be displayed incorrectly. ]
On Thu, Apr 29, 2010 at 9:29 AM, futurity <neil at futurity.co.uk> wrote:
> I'm wondering if high priority jobs can suspend low priority jobs and use
> their suspended resources? My tests indicate that this isn't possible.
You might look at using a subordinate queue setup:
> Is the grid engine scheduler smart enough to know that a high priority job
> will suspend a low priority job before it it run on the same machine and
> therefore calculates the resources that will be available once the low
> priority job is suspended?
> If so, is there a way to configuring the grid engine so that high priority
> jobs are transferred to machines not only when the resources are free, but
> when there will only be sufficient resources once the subordinate job is
> For example, if I have a machine with a consumable "virtual_free" memory of
> 3000MB. If a low priority job runs on this machine requesting 1000MB, this
> reduces the virtual_free to 2000MB.
> Can a high priority job (one that that would suspend the low priority job)
> be able to be run on this same machine if it required 2500MB virtual_free
> memory? There isn't 2500MB available, only 2000MB so I assume it would be
> prevented from running on this machine?
> In reality, surely if this high job was run on this machine, 500MB of the
> low priority job's 1000MB memory would be swapped out to disk and the high
> priority job run in the 2500MB it requires. Then when the high job is
> finished, the low priority job would be swapped back to real memory and
> continued to run.
> As you can see, its frustrating that high priority jobs are prevented from
> running on a machine because a resource isn't already available, although it
> will be available once the low priority job already running there is
> Kind Regards
To unsubscribe from this discussion, e-mail: [users-unsubscribe at gridengine.sunsource.net].
More information about the gridengine-users