WANG Yong-xian, ZHANG Li-lun, CHE Yong-gang, et al. Efficient Parallel Computing and Performance Tuning for Multi-Block Structured Grid CFD Applications on Tianhe Supercomputer[J]. Acta Electronica Sinica, 2015, 43(1): 36-44.
How to improve the parallel performance of CFD applications with typical multi-block structured grid based on the CPU sub-platform of Tianhe-1A and CPU+MIC co-processor heterogeneous platform of Tianhe-2 supercomputer system
is focused in this paper.Some strategies of performance optimization matched with both the characteristic of CFD application and the architectures of high-performance computing (HPC) platform are discussed in detail.Some numerical experiments are performed on Tianhe-2 supercomputer system with the maximum of grid cells achieving 6.810
11
and the total amount of processors and/or co-processors being 1.37610
6
.It shows that the optimized cod
e can get a speedup of 2.6 times faster on CPU and co-processor hybrid platform than that on the CPU platform only
and good scalability is also observed from the test results.