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Implementing 3D Finite Difference Codes on the GPU

Implementing 3D Finite Difference Codes on the GPU

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Communicati<strong>on</strong> and Computati<strong>on</strong> Overlap<br />

G2C G2C<br />

MPI_Sendrecv<br />

C2G<br />

MPI_Sendrecv<br />

Communicati<strong>on</strong> and computati<strong>on</strong> when using <strong>on</strong>ly MPI<br />

G2C G2C<br />

Time<br />

MPI_Sendrecv<br />

C2G<br />

C2G<br />

C2G<br />

Communicati<strong>on</strong> and computati<strong>on</strong> when using MPI and OpenMP<br />

Ghost node computati<strong>on</strong><br />

Internal node computati<strong>on</strong><br />

PCIe communicati<strong>on</strong> (CPU-<strong>GPU</strong>)<br />

MPI communicati<strong>on</strong> (CPU-CPU)

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