>your job will be only runnable on nodes that offer at least 200 GB main memory (sum of memory on all sockets/cpu of >the node)
But according to the manual *--mem*=<*size[units]*> Specify the real memory required per node. so, with #SBATCH --mem=10GB #SBATCH --nodes=4 #SBATCH --ntasks-per-node=5 the total requested memory should be 40GB and not 200GB. Regards, Mahmood On Mon, Dec 16, 2019 at 10:19 AM Mahmood Naderan <mahmood...@gmail.com> wrote: > >No, this indicates the amount of residual/real memory as reqeusted per > node. Your job will be only runnable on nodes >that offer at least 200 GB > main memory (sum of memory on all sockets/cpu of the node). Please also > have a closer look >at man sbatch. > > > Thanks. > Regarding the status of the nodes, I see > RealMemory=120705 AllocMem=1024 FreeMem=309 Sockets=32 Boards=1 > > The question is why freemem is so much low while allocmem is far less than > realmemory? > > Regards, > Mahmood > > > > > On Mon, Dec 16, 2019 at 10:12 AM Kraus, Sebastian < > sebastian.kr...@tu-berlin.de> wrote: > >> Hi Mahmood, >> >> >> >> will it reserve (looks for) 200GB of memory for the job? Or this is >> the hard limit of the memory required by job? >> >> >> No, this indicates the amount of residual/real memory as reqeusted per >> node. Your job will be only runnable on nodes that offer at least 200 GB >> main memory (sum of memory on all sockets/cpu of the node). Please also >> have a closer look at man sbatch. >> >> Best >> Sebastian >> >> >> >> >> Sebastian Kraus >> Team IT am Institut für Chemie >> >> Technische Universität Berlin >> Fakultät II >> Institut für Chemie >> Sekretariat C3 >> Straße des 17. Juni 135 >> 10623 Berlin >> >> Email: sebastian.kr...@tu-berlin.de >> >> ------------------------------ >> *From:* slurm-users <slurm-users-boun...@lists.schedmd.com> on behalf of >> Mahmood Naderan <mahmood...@gmail.com> >> *Sent:* Monday, December 16, 2019 07:19 >> *To:* Slurm User Community List >> *Subject:* [slurm-users] Question about memory allocation >> >> Hi, >> If I write >> >> #SBATCH --mem=10GB >> #SBATCH --nodes=4 >> #SBATCH --ntasks-per-node=5 >> >> will it reserve (looks for) 200GB of memory for the job? Or this is the >> hard limit of the memory required by job? >> >> Regards, >> Mahmood >> >> >>
