Improve CUDA resource management for MPI jobs#185
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vmitq wants to merge 1 commit intowavefunction91:masterfrom
Open
Improve CUDA resource management for MPI jobs#185vmitq wants to merge 1 commit intowavefunction91:masterfrom
vmitq wants to merge 1 commit intowavefunction91:masterfrom
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Split memory evenly between processes on one GPU
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The code detects the number of local MPI processes and available CUDA devices and assigns a GPU ID to each process in a round-robin fashion. When determining the available memory, it is divided evenly among the processes sharing the same GPU.
That simplifies GPU resource management when running jobs with multiple GPUs per host or multiple processes per GPU.