On Tue, Jul 12, 2016 at 2:37 PM, Carlos Fenoy <mini...@gmail.com> wrote:
> If you do not specify the number of nodes does it work as expected? > it run with 2 nodes, not 3 nodes. I just realized, I have to use srun instead of mpirun in order for SLURM to run my job as I'm expected. > On Tue, 12 Jul 2016, 09:25 Loris Bennett, <loris.benn...@fu-berlin.de> > wrote: > >> >> Husen R <hus...@gmail.com> writes: >> >> > Re: [slurm-dev] Re: number of processes in slurm job >> > >> > Hi, >> > >> > Thanks for your reply ! >> > >> > I use this sbatch script >> > >> > #!/bin/bash >> > #SBATCH -J mm6kn2_03 >> > #SBATCH -o 6kn203-%j.out >> > #SBATCH -A necis >> > #SBATCH -N 3 >> > #SBATCH -n 16 >> > #SBATCH --time=05:30:00 >> > >> > mpirun ./mm.o 6000 >> >> You need to tell 'mpirun' how many processes to start. If you do not, >> probably all cores available will be used. So it looks like you have 6 >> cores per node and thus 'mpirun' starts 18 processes. You should write >> some thing like >> >> mpirun -np ${SLURM_NTASKS} ./mm.o 6000 >> >> Cheers, >> >> Loris >> >> > regards, >> > >> > Husen >> > >> > On Tue, Jul 12, 2016 at 1:21 PM, Loris Bennett >> > <loris.benn...@fu-berlin.de> wrote: >> > >> > Husen R <hus...@gmail.com> writes: >> > >> > > number of processes in slurm job >> > >> > >> > > >> > > Hi all, >> > > >> > > I tried to run a job on 3 nodes (N=3) with 16 number of processes >> > > (n=16) but slurm automatically changes that n value to 18 (n=18). >> > > >> > > I also tried to use other combination of n values that are not >> equally >> > > devided by N but Slurm automatically changes those n values to >> values >> > > that are equally devided by N. >> > > >> > > How to change this behavior ? >> > > I need to use a specific value of n for experimental purpose. >> > > >> > > Thank you in advance. >> > > >> > > Regards, >> > > >> > > Husen >> > >> > >> > You need to give more details about what you did. How did you set >> the >> > number of processes? >> > >> > Cheers, >> > >> > Loris >> > >> > -- >> > Dr. Loris Bennett (Mr.) >> > ZEDAT, Freie Universität Berlin Email >> > loris.benn...@fu-berlin.de >> > >> > >> > >> >> -- >> Dr. Loris Bennett (Mr.) >> ZEDAT, Freie Universität Berlin Email loris.benn...@fu-berlin.de >> >