物探与化探
物探與化探
물탐여화탐
GEOPHYSICAL AND GEOCHEMICAL EXPLORATION
2014年
3期
601-606
,共6页
顾观文%吴文鹂%梁萌
顧觀文%吳文鸝%樑萌
고관문%오문리%량맹
大地电磁%多核并行%三维正演%三维反演
大地電磁%多覈併行%三維正縯%三維反縯
대지전자%다핵병행%삼유정연%삼유반연
magnetotelluric%multi-core paralleled%3D forward%3D inversion
首先以频点为并行粒度,完成了MT三维正演并行计算,然后将该算法引入共轭梯度法MT三维反演过程中的正演求数据的残差、反演方程右端项的求取、共轭梯度求解模型增量这三个计算环节中,使得MT三维反演中的主要计算量实现并行化。对编制的MT三维正、反演并行计算程序,在多核工作站上通过理论地电模型进行了正演试算和反演验证,并在串行和并行两种计算方式下进行了计算效率对比。
首先以頻點為併行粒度,完成瞭MT三維正縯併行計算,然後將該算法引入共軛梯度法MT三維反縯過程中的正縯求數據的殘差、反縯方程右耑項的求取、共軛梯度求解模型增量這三箇計算環節中,使得MT三維反縯中的主要計算量實現併行化。對編製的MT三維正、反縯併行計算程序,在多覈工作站上通過理論地電模型進行瞭正縯試算和反縯驗證,併在串行和併行兩種計算方式下進行瞭計算效率對比。
수선이빈점위병행립도,완성료MT삼유정연병행계산,연후장해산법인입공액제도법MT삼유반연과정중적정연구수거적잔차、반연방정우단항적구취、공액제도구해모형증량저삼개계산배절중,사득MT삼유반연중적주요계산량실현병행화。대편제적MT삼유정、반연병행계산정서,재다핵공작참상통과이론지전모형진행료정연시산화반연험증,병재천행화병행량충계산방식하진행료계산효솔대비。
A parallel magnetotelluric ( MT) 3D forward modeling algorithm was implemented on multi-core CPU, and was introduced into the 3D conjugate gradient ( CG) inversion algorithm with MT data for parallel computation. The authors tested the parallel MT 3D forward modeling code with a theoretical model and the parallel 3D inversion code with one synthetic data. A comparison of the execu-tion efficiency was made between serial computation and parallel computation. The results indicate that the parallel 3D forward modeling and inversion computation are correct, and the efficiency of computation is greatly improved.