本文關鍵詞： 超級計算機 并行矩量法 容錯算法 現(xiàn)場保護 可靠性　出處：《電子與信息學報》2017年09期 　論文類型：期刊論文

【摘要】：基于超級計算機的大規(guī)模并行電磁計算對于解決實際工程中的復雜電磁難題具有重要意義,但超級計算機中由節(jié)點故障導致的進程崩潰事件的概率遠遠高于普通計算機。該文針對傳統(tǒng)電磁計算難以有效應對進程崩潰的現(xiàn)狀,提出一種高效的、適用于大規(guī)模并行高階矩量法的容錯算法。在現(xiàn)有并行高階矩量法的基礎上,基于"硬盤緩存"和"直接內(nèi)存讀取"設計高效率、高可靠性的現(xiàn)場保護算法,同時設計了高效的斷點恢復算法。算法的有效性主要在于"固定的現(xiàn)場保護點"這一特點,它使得算法在有故障的情況下仍然可以正常有序地進行;而原算法每次碰到故障,則只能從頭計算。數(shù)值仿真實驗驗證了容錯算法在應對進程崩潰事件時的有效性,大幅提高了大規(guī)模并行高階矩量法的可靠性。
[Abstract]:Large-scale parallel electromagnetic computation based on supercomputer is of great significance for solving complex electromagnetic problems in practical engineering. But the probability of process crash caused by node failure in supercomputer is much higher than that of common computer. This paper proposes an efficient method to solve the problem that traditional electromagnetic computation is difficult to deal with process crash effectively. Fault tolerant algorithm for large-scale parallel high order moment method. Based on the existing parallel high order moment method, a high efficiency and high reliability field protection algorithm is designed based on "hard disk cache" and "direct memory reading". At the same time, an efficient breakpoint recovery algorithm is designed. The effectiveness of the algorithm is mainly due to the feature of "fixed field protection point", which enables the algorithm to proceed normally and orderly in the event of failure. The original algorithm can only be calculated from scratch every time the fault occurs. Numerical simulation results show that the fault-tolerant algorithm is effective in dealing with the process crash event and greatly improves the reliability of large-scale parallel high-order moment method.
【作者單位】： 西安電子科技大學天線與微波技術重點實驗室;
【基金】：國家自然科學基金(61301069) 教育部新世紀優(yōu)秀人才支持計劃(NCET-13-0949) 中央高�；究蒲袠I(yè)務費(JB160218) 國家863計劃項目(2012AA01A308)~~
【分類號】：TP338
【正文快照】： 作為電磁特性仿真中最精確的數(shù)值方法,矩量Research Funds for the Central Universities(JB160218),TheNational 863 Program of China(2012AA01A308)法(Method of Moments,Mo M)可以有效處理各種復雜電磁問題[1]。矩量法需要建立并求解矩陣方程:AX=B,其中A代表阻抗矩陣,它是，

本文編號：1465059