Re: [slurm-dev] Re: number of processes in slurm job Hi Husen.
Are you compiled OpenMPI with Slurm?? Indicate for example –with-slurm and –with-pmi ¿? I use OpenMPI and Works fine without indicated mpi procs into my batch file. *De:* Husen R [mailto:hus...@gmail.com] *Enviado el:* martes, 12 de julio de 2016 9:41 *Para:* slurm-dev <slurm-dev@schedmd.com> *Asunto:* [slurm-dev] Re: number of processes in slurm job On Tue, Jul 12, 2016 at 2:24 PM, 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 without specifying -np value, using "#SBATCH -n 16" as written in my sbatch script I hope mpirun will use 16 as the number of processes. however, I just realized mpirun doesn't read sbatch script. 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 -- Este correo y sus archivos asociados son privados y confidenciales y va dirigido exclusivamente a su destinatario. Si recibe este correo sin ser el destinatario del mismo, le rogamos proceda a su eliminación y lo ponga en conocimiento del emisor. La difusión por cualquier medio del contenido de este correo podría ser sancionada conforme a lo previsto en las leyes españolas. No se autoriza la utilización con fines comerciales o para su incorporación a ficheros automatizados de las direcciones del emisor o del destinatario . This mail and its attached files are confidential and are exclusively intended to their addressee. In case you may receive this mail not being its addressee, we beg you to let us know the error by reply and to proceed to delete it. The circulation by any mean of this mail could be penalised in accordance with the Spanish legislation. The use of both the transmitter and the addressee’s address with a commercial aim, or in order to be incorporated to automated files, is not authorised.
