You cannot have two default partitions. The slurm.conf is picking up the last of the entries flagged as Default; because the compute partition has no partition specified it is being sent to the default partition, thus the first srun is being submitted to the compute partition, and that partition has only a node with no gpu GRES defined, thus the srun is correct to fail.
What is the output of the command sinfo The partition understood to be the default will be indicated with * after the partition name. From: slurm-users <slurm-users-boun...@lists.schedmd.com> On Behalf Of Durai Arasan Sent: Tuesday, May 12, 2020 10:47 AM To: slurm-users@lists.schedmd.com Cc: benjamin.glaes...@uni-tuebingen.de Subject: [slurm-users] slurm only looking in "default" partition during scheduling Hi, We have a cluster with 2 slave nodes. These are the slurm.conf lines describing nodes and partitions: NodeName=slurm-gpu-1 NodeAddr=192.168.0.200 Procs=16 Gres=gpu:2 State=UNKNOWN NodeName=slurm-gpu-2 NodeAddr=192.168.0.124 Procs=1 Gres=gpu:0 State=UNKNOWN PartitionName=gpu Nodes=slurm-gpu-1 Default=YES MaxTime=INFINITE State=UP PartitionName=compute Nodes=slurm-gpu-2 Default=YES MaxTime=INFINITE State=UP Running sinfo gives the following: PARTITION AVAIL TIMELIMIT NODES STATE NODELIST gpu up infinite 1 idle slurm-gpu-1 compute* up infinite 1 idle slurm-gpu-2 When I request a gpu job to be run using the following command: srun --gres=gpu:2 nvidia-smi I get the error: srun: error: Unable to allocate resources: Requested node configuration is not available and in slurmctld.log these are the entries: [2020-05-12T14:33:47.578] _pick_best_nodes: JobId=55 never runnable in partition compute [2020-05-12T14:33:47.578] _slurm_rpc_allocate_resources: Requested node configuration is not available It seems like slurm is looking only in the partition "compute" and not in the other partitions. Even if I explicitly specify the gpu node to srun it fails: srun --nodelist=slurm-gpu-1 nvidia-smi I get the same error: srun: error: Unable to allocate resources: Requested node configuration is not available and in slurmctld.log: [2020-05-12T14:38:57.242] No nodes satisfy requirements for JobId=56 in partition compute [2020-05-12T14:38:57.242] _slurm_rpc_allocate_resources: Requested node configuration is not available It is still looking in partition "compute" even after specifying the node to srun. But when I specify a partition, it works: srun -p gpu nvidia-smi But I would not like to specify the partition and would like slurm to select nodes based on the options specified in the srun command. Does anyone understand what is wrong in the setup? Thanks, Durai
