Gradient methods for solving inverse gravimetry and magnetometry problems on the Uran supercomputer

Authors

  • E.N. Akimova N.N. Krasovskii Institute of Mathematics and Mechanics of UB RAS (IMM UB RAS)
  • V.E. Misilov N.N. Krasovskii Institute of Mathematics and Mechanics of UB RAS (IMM UB RAS)
  • A.F. Skurydina N.N. Krasovskii Institute of Mathematics and Mechanics of UB RAS (IMM UB RAS)
  • A.I. Tretyakov N.N. Krasovskii Institute of Mathematics and Mechanics of UB RAS (IMM UB RAS)

DOI:

https://doi.org/10.26089/NumMet.v16r116

Keywords:

inverse gravimetry and magnetometry problems, parallel algorithms, gradient-type methods, multi-core and graphics processors

Abstract

A modified linearized steepest descent method with variable weight factors is proposed to solve three-dimensional structural inverse gravimetry and magnetometry problems of finding the interfaces between constant density or magnetization layers in a multilayer medium. A linearized conjugate gradient method and its modified version with weight factors for solving the gravimetry and magnetometry problems in a multilayer medium is constructed. On the basis of the modified gradient-type methods, a number of efficient parallel algorithms are numerically implemented on an Intel multi-core processor and NVIDIA GPUs. The developed parallel iterative algorithms are compared for a model problem in terms of the relative error, the number of iterations, and the execution time.

Author Biographies

E.N. Akimova

V.E. Misilov

A.F. Skurydina

A.I. Tretyakov

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Published

03-04-2015

How to Cite

Акимова Е.Н., Мисилов В.Е., Скурыдина А.Ф., Третьяков А.И. Gradient Methods for Solving Inverse Gravimetry and Magnetometry Problems on the Uran Supercomputer // Numerical Methods and Programming (Vychislitel’nye Metody i Programmirovanie). 2015. 16. 155-164. doi 10.26089/NumMet.v16r116

Issue

Section

Section 1. Numerical methods and applications