June 22–26, 2014
Leipzig, Germany

Presentation Details

Name: Large Scale 3D Elastic Wave Simulation on Tianhe-2
Time: Thursday, June 26, 2014
11:20 am - 11:40 am
Room:   Hall 4
CCL - Congress Center Leipzig
Speaker:   Simon See, Shanghai Jiaotong University
Tianhe-2 is one of the most powerful machine on this planet using both traditional CPU and Accelerator (Xeon Phi). Though Xeon Phi has good theoretical peak perfomance, it is not an easy task to optimize codes to run efficiently on this accelerator. In this talk we briefly descrbed the work that the SJTU ASC14 team done to optimize a large scale hybrid seismic simulation application, 3D-EW (Elastic Wave) is a computational intensively seismic simulation code on Tianhe-2.
Using detailed understanding of the Xeon Phi architecture and the algorithm of 3D-EW, SJTU team manage to port and optimize the code by using C Intrinsics, a low-level programming instruction set. In this report, we able to show that after optimizations, we manage to get twice performance on Intel Xeon Phi 31S1Pover a highly optimized code on Intel Xeon CPU E5-2692. Also the code is well scaled to 1024 MIC nodes, using 200, 000 cores.