slides - Spring School in Advanced Computing TACC @ UP

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Hybrid - Motivation • Load Balanc<strong>in</strong>g • Reduce Memory Traffic CPU-bound Memory-bound 4
Node Views CPU OpenMP CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU CPU MPI 0 1 2 3 CPU  CPU  CPU  CPU  CPU  CPU  CPU  CPU  CPU  CPU  CPU  CPU  CPU  CPU  CPU  CPU  Process- Aff<strong>in</strong>ity Memory- Allocation 5
Page 1 and 2: Hybrid Computing Lars Koesterke Uni
Page 3: Why Hybrid? (cont 1) • Only profi
Page 7 and 8: NUMA Operations • Ways Process Af
Page 9 and 10: Modes of MPI/Thread Operation • S
Page 11 and 12: SMP Nodes Hybrid Batch Script 16 th
Page 13 and 14: SMP Sockets Hybrid Batch Script 4 t
Page 15 and 16: MPI with OpenMP -- Messaging Single
Page 17 and 18: Syntax: MPI2 MPI_Init_thread call M
Page 19 and 20: MPI Call through Master • MPI_THR
Page 21 and 22: MPI Call within Single • MPI_THRE
Page 23 and 24: Overlapping Communication and Work
Page 25 and 26: Thread-rank Communication • Can u
Page 27 and 28: NUMA in Code • Scheduling Affinit
Page 29 and 30: Conclusion • Placement and bindin

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