Performance Analysis and Optimization of PalaBos on Petascale Sunway BlueLight MPP Supercomputer

We present some results conceming the computational performances of the open source general purpose CFD code PalaBos, in terms of scalability and efficiency, on the petascale Sunway BlueLight MPP system. Based on the numerical simulated program of 3D cavity lid driven flow, the optimization methods in I/O, communication, memory access, etc, are applied in debugging and optimization of the parallel MPI program. Experimental results of large scalar parallel computing of 3D cavity lid driven flow show that, the parallel strategy and optimization methods are correct and efficient. The parallel implementation scheme is very useful and can shorten the computing time explicitly.