CUDA Libraries and MPI+OpenMP+CUDA - Prace Training Portal
CUDA Libraries and MPI+OpenMP+CUDA - Prace Training Portal
CUDA Libraries and MPI+OpenMP+CUDA - Prace Training Portal
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MPI-GPU binding & GPU memory managementNEVER allocated 100% !!!Pointer to <strong>CUDA</strong> memory(MPI process sub-rank 0)Pointer to <strong>CUDA</strong> memory(MPI process sub-rank 0)Pointer to <strong>CUDA</strong> memory(MPI process sub-rank 1)NOTE 1: PWscf keeps track of how much GPU memory is availableNOTE 2: any process can access the memory allocated to another process in the card!!!February 10, 2012 PRACE Winter School 201243
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