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--- techstaff:slurm [2018/05/08 12:06] – kauffman
+++ techstaff:slurm [2018/11/21 11:31] – [$CUDA_VISIBLE_DEVICES] kauffman
@@ Line 112: / Line 112: @@
 | ^ SLURM ^ Example ^
 ^ Submit a batch serial job | sbatch | sbatch runscript.sh |
-^ Run a script interatively | srun | srun --pty -p interact -t 10 --mem 1000 \\ /bin/bash \\ /bin/hostname |
+^ Run a script interactively | srun | srun --pty -p interact -t 10 --mem 1000 \\ /bin/bash \\ /bin/hostname |
 ^ Kill a job | scancel | scancel 4585 |
 ^ View status of queues | squeue | squeue -u cnetid |
@@ Line 246: / Line 246: @@
 ====== Using the GPU ======
+===== CUDA_VISIBLE_DEVICES =====
+Do not set this variable. It will be set for you by SLURM.
+The variable name is actually misleading; since it does NOT mean the amount of devices, but rather the physical device number assigned by the kernel (e.g. /dev/nvidia2).
+For example: If you requested multiple gpu's from SLURM (--gres=gpu:2), the CUDA_VISIBLE_DEVICES variable should contain two numbers(0-3 in this case) separated by a comma (e.g. 1,3).
 ===== GRES Multiple GPU's on one system =====