期刊
COMPUTER PHYSICS COMMUNICATIONS
卷 176, 期 8, 页码 531-538出版社
ELSEVIER
DOI: 10.1016/j.cpc.2006.12.006
关键词
molecular dynamics simulation; long-range interaction; ab initio calculation; FFT; Blue Matter; strong scalability; parallel efficiency
QCDOC is a massively parallel supercomputer with tens of thousands of nodes distributed on a six-dimensional torus network. The 6D structure of the network provides the needed communication resources for many communication-intensive applications. In this paper, we present a parallel algorithm for three-dimensional Fast Fourier Transform and its implementation for a 4096-node QCDOC prototype. Two techniques have been used to increase its parallel performance: simultaneous multi-dimensional communication and communication-and-computation overlapping. Benchmarking experiments suggest that 3D FFTs of size 128 x 128 x 128 can scale well on such platforms up to 4096 nodes. Our performance results suggest stronger scalability on QCDOC than on IBM BlueGene/L supercomputer. (c) 2007 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据