Michal, The job has only 1 task. -c is cpus per task. Each task can run on only one node. So if each node has only 1 cpu, you can only assign 1 cpu per task. Martin
From: Michal Zielinski [mailto:michal.zielin...@uconn.edu] Sent: Tuesday, September 09, 2014 6:36 AM To: slurm-dev Subject: [slurm-dev] Re: "Requested node configuration is not available" when using -c Josh, I believe that -n sets the number of tasks. I only want a single task, as when a single process uses multiple cores. srun -n 2 hostname returns linux-slurm2 linux-slurm3 which is definitely not what I want. Thanks, Mike On Mon, Sep 8, 2014 at 8:07 PM, Josh McSavaney <mcsa...@csh.rit.edu<mailto:mcsa...@csh.rit.edu>> wrote: I believe your slurm.conf is defining 4 nodes with a single logical processor each. You are then trying to allocate two CPUs on a single node with srun, which (according to your slurm.conf) you do not have. You may want to consider `srun -n 2 hostname` and see where that lands you. Regards, Josh McSavaney Bit Flipper Rochester Institute of Technology On Mon, Sep 8, 2014 at 7:42 PM, Christopher Samuel <sam...@unimelb.edu.au<mailto:sam...@unimelb.edu.au>> wrote: On 09/09/14 07:26, Michal Zielinski wrote: I have a small test cluster (node[1-4]) running slurm 14.03.0 setup with CR_CPU and no usage restrictions. Each node has just 1 CPU. [...] But, *srun -c 2 hostname* does not work, and it returns the above error. I have no idea why I can't dedicate 2 cores to a single job if I can dedicate each core individually to a job. What does "scontrol show node" say? cheers, Chris -- Christopher Samuel Senior Systems Administrator VLSCI - Victorian Life Sciences Computation Initiative Email: sam...@unimelb.edu.au<mailto:sam...@unimelb.edu.au> Phone: +61 (0)3 903 55545<tel:%2B61%20%280%293%20903%2055545> http://www.vlsci.org.au/ http://twitter.com/vlsci
