Influence of Domain Decomposition on Parallel Computation Speed of Meteorological Model
Hongrang He · Jisuanji gongcheng · 2008
The influence of domain decomposition on the parallel computation speed of ARPS model is analyzed on the base of some experiments.Results show that the subdomains similar to square possess the biggest acceleration rate and efficiency of parallel whether the optimization lever-o2 is applied to or not.Under the circumstances of optimization lever-o2,parallel speed also relates to decomposition direction.The decomposition along y direction is preferable to that along x direction for improving in parallel efficiency.However,under the circumstances without optimization,parallel speed is almost independent of decomposition direction.Furthermore,experimental results are discussed in the paper from the angles of communications traffic and optimization.