Compilation of CUDA or OpenACC jobs must be performed on the GPU nodes. Therefore, you must run an interactive job to compile. Crane has 2 shared GPU partitions: gpu_k20 and gpu_m2070. An example command to compile in the GPU gpu_k20 partition could be:
The above command will start a shell on a GPU node with 6 cores and 6GB of ram in order to compile a GPU job. The above command could also be useful if you want to run a test GPU job interactively.
You may request multiple gpus by changing the
--gres value to -
-gres=gpu:2. Note that this value is per node. For example,
--nodes=2 --gres=gpu:2 will request 2 nodes with 2 GPUs each, for a total of 4 GPUs.
CUDA and OpenACC submissions require running on GPU nodes.
OpenACC submissions require loading the PGI compiler (which is currently required to compile as well).