14.9 TFLOPS Three-Dimensional Fluid Simulation for Fusion Science with HPF on the Earth Simulator
14.9 TFLOPS Three-Dimensional Fluid Simulation for Fusion Science with HPF on the Earth Simulator
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14.9 TFLOPS 地球模拟器上 HPF 融合科学三维流体模拟
DOI：
10.1109/sc.2002.10051
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
M. Yokokawa
中科院分区：
文献类型：
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作者：
H. Sakagami;H. Murai;Y. Seo;M. Yokokawa
我们成功地得到14.9 TFLOPS的性能时，运行等离子体模拟代码IMPACT-3D与高性能Fortran并行的512个节点的地球模拟器。IMPACT-3D是一个采用TVD格式的内爆分析程序，它采用显式5点模板格式进行空间微分，分数时间步长进行时间积分，对三维可压缩和无粘欧拉流体进行计算。网格尺寸为2048 x2048 x4096，第三维分布用于并行化。在评估中使用的HPF系统是HPF/ES，通过增强NEC HPF/SX V2主要在通信可扩展性为地球模拟器开发。Shift通信通过使用HPF/JA扩展手动调整以获得最佳性能，HPF/JA扩展旨在为用户提供对复杂并行化和通信优化的更多控制。
We succeeded in getting 14.9 TFLOPS performance when running a plasma simulation code IMPACT-3D parallelized with High Performance Fortran on 512 nodes of the Earth Simulator. The theoretical peak performance of the 512 nodes is 32 TFLOPS, which means 45% of the peak performance was obtained with HPF.IMPACT-3D is an implosion analysis code using TVD scheme, which performs three-dimensional compressible and inviscid Eulerian fluid computation with the explicit 5-point stencil scheme for spatial differentiation and the fractional time step for time integration. The mesh size is 2048x2048x4096, and the third dimension was distributed for the parallelization. The HPF system used in the evaluation is HPF/ES, developed for the Earth Simulator by enhancing NEC HPF/SX V2 mainly in communication scalability. Shift communications were manually tuned to get best performance by using HPF/JA extensions, which was designed to give the users more control over sophisticated parallelization and communication optimizations.