Implementing 3D Finite Difference Codes on the GPU

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Communication and Computation Overlap G2C G2C MPI_Sendrecv C2G MPI_Sendrecv Communication and computation when using only MPI Time C2G Ghost node computation Internal node computation PCIe communication (CPU-GPU) MPI communication (CPU-CPU)
Communication and Computation Overlap G2C G2C MPI_Sendrecv C2G MPI_Sendrecv Communication and computation when using only MPI G2C G2C Time MPI_Sendrecv C2G C2G C2G Communication and computation when using MPI and OpenMP Ghost node computation Internal node computation PCIe communication (CPU-GPU) MPI communication (CPU-CPU)
Page 1 and 2: Implementing <stro
Page 3 and 4: 3D Finite<
Page 5 and 6: Naive Implementation • One thread
Page 7 and 8: Input Reuse within a 2x2 Threadbloc
Page 9 and 10: y Process at z = k+1 z x Stored in
Page 11 and 12: y Process at z = k+3 z x Stored in
Page 13 and 14: Using Shared Memory: Single Pass
Page 15 and 16: Performance for Various Stencil Siz
Page 17 and 18: ------- advance the slice (move the
Page 19 and 20: Processing Phases for 2 GPUs Phase
Page 21 and 22: 4-GPU Performance using MPI Communi
Page 23 and 24: Multi-GPU Performance Using MPI+Ope
Page 25: Comparing MPI and MPI+OMP performan
Page 29 and 30: Computation and Communication Costs
Page 31: Questions?

Implementing 3D Finite Difference Codes on the GPU

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