Hi Tapasya,
I don't know of any implementation of easy backfilling for slurm, but it
should be very easy to modify current backfill plugin to implement easy
backfilling.
The reservation is made at the end of the backfill algorithm so just
wrapping it with an "if" for the first job should be enough. You should add
a counter to know if its the first job, but it should be pretty easy.
These are the lines involved in the reservation (lines 917,918 in
src/plugins/sched/backfill/backfill.c)
bit_not(avail_bitmap);
_add_reservation(job_ptr->start_time,
end_reserve,
avail_bitmap, node_space,
&node_space_recs);
Regards,
Carles Fenoy
On Thu, Apr 25, 2013 at 7:40 AM, Tapasya Patki <[email protected]>wrote:
> Hello,
>
> Is there an existing simple backfilling plugin for SLURM that does easy
> backfilling (only make a reservation for the first job at the head of the
> queue)? The sched/backfill seems to work in a conservative way (correct me
> if I'm wrong).
>
> Thanks.
>
> --Tapasya
>
--
--
Carles Fenoy
