本文選題：并行計(jì)算　切入點(diǎn)：反應(yīng)運(yùn)移　出處：《水文地質(zhì)工程地質(zhì)》2016年01期

【摘要】：反應(yīng)運(yùn)移模擬在實(shí)際應(yīng)用中的主要制約因素是其計(jì)算量巨大,對模擬程序并行化可以拓展反應(yīng)運(yùn)移模擬的應(yīng)用范圍。在闡述反應(yīng)運(yùn)移模擬耦合過程的基礎(chǔ)上,介紹了TOUGHREACT基于MPI的并行實(shí)現(xiàn)方法。以ECO2N模塊為例,通過分析程序的流程圖、加速比和并行效率,探討TOUGHREACT并行程序的計(jì)算性能,并通過加密網(wǎng)格的方式對其加速效果進(jìn)行驗(yàn)證。結(jié)果表明:基于MPI的TOUGHREACT并行程序采用METIS區(qū)域分解方法和AZTEC并行迭代解法器庫,有效地實(shí)現(xiàn)了對TOUGHREACT的并行加速;在計(jì)算集群上調(diào)用2~128個(gè)處理器時(shí),可以達(dá)到2.00~68.09倍的相對加速,顯著提高了程序的計(jì)算效率;網(wǎng)格的剖分精度越高,該程序的并行效果就越好,表明該程序?qū)?fù)雜問題的并行加速效果更優(yōu)。
[Abstract]:The main restriction factor of reaction migration simulation in practical application is the huge amount of calculation. The application scope of reaction migration simulation can be expanded by parallelization of simulation program. On the basis of describing the coupling process of reaction migration simulation, The parallel implementation method of TOUGHREACT based on MPI is introduced. Taking ECO2N module as an example, the computational performance of TOUGHREACT parallel program is discussed by analyzing the flow chart, speedup ratio and parallel efficiency of the program. The results show that the TOUGHREACT parallel program based on MPI uses METIS domain decomposition method and AZTEC parallel iterative resolver library to realize the parallel acceleration of TOUGHREACT effectively. When 2 ~ 128 processors are called on the computing cluster, the relative acceleration of 2.00 or 68.09 times can be achieved, and the computational efficiency of the program is significantly improved, and the higher the mesh division accuracy is, the better the parallel effect of the program is. It shows that the parallel acceleration effect of this program is better for complex problems.
【作者單位】： 表生地球化學(xué)教育部重點(diǎn)實(shí)驗(yàn)室/南京大學(xué)地球科學(xué)與工程學(xué)院;北京師范大學(xué)水科學(xué)研究院;
【基金】：國家自然科學(xué)基金項(xiàng)目資助(41172206) 江蘇省自然科學(xué)基金項(xiàng)目資助(BK2012313)
【分類號】：TP338.6;P641.2
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本文編號：1690715