Computing UDCHR Scheme for simulating underwater sediment movement using OpenMP

Parallel computing with OpenMP platform in numerical simulation of underwater sediment movement is elaborated. The result shown computer I with processor type Intel Core i7-7500U has better speedup performance ( 3.291493 times of serial computing) than Computer II with processor type AMD Ryzen 5 2400G. Meanwhile, using computer II, the speedup of parallel computing is obtained 3.751561 times of serial computing. Indeed this discrepancy occurs because of the processor type of Computer I is higher than Computer II. Moreover, the efficiency of Computer II is 11.5% lower than computer II which is conducted 91.1367% efficiency. This means using Computer II the ability of parallel codes to achieve best performance proportional to the number of processor is obtained. Furthermore, the numerical simulation using UDCHR is shown in a good agreement with the staggered grid scheme of two-layer SWE and SWE-Exner model.