Multicore-aware parallel temporal blocking of stencil codes for shared and distributed memory

Details Multicore-aware parallel temporal blocking of stencil codes for shared and distributed memory Multicore-aware parallel temporal blocking of stencil codes for shared and distributed memory

2009-12-22

arxiv.org/abs/0912.4506v1

Computer Science

Performance

9 pages, 6 figures

Scientific paper

10.1109/IPDPSW.2010.5470813

New algorithms and optimization techniques are needed to balance the accelerating trend towards bandwidth-starved multicore chips. It is well known that the performance of stencil codes can be improved by temporal blocking, lessening the pressure on the memory interface. We introduce a new pipelined approach that makes explicit use of shared caches in multicore environments and minimizes synchronization and boundary overhead. For clusters of shared-memory nodes we demonstrate how temporal blocking can be employed successfully in a hybrid shared/distributed-memory environment.

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