Parallel Stratified and Rotating Turbulence Simulation based on MPI

We describe a parallel implementation for large-eddy simulation(LES) of the strati ed and rotating turbulence based on MPI. The parallelization strategy is speci ed by eliminating the tridiagonal solver with explicit method and by a domain decomposition for solving the poisson equation. In this simulation we have runon CRAY-T3E under the message passing platform MPI with a various domain decomposition. The processing time and speed up with respect to each domain decomposition and the scalabilty ofthisparallel code of LES are presented. The result show that we can gain up to 16 times faster speed up on 64 processors with xyz-direction domain decomposition and scalable up to 128 128 128 which processing time is almost similar to that of 40 40 40 on a single procressor machine with a sequential code