THE PARALLEL COMPUTATION OF LAGRANGE MULTIPLIER SEARCHING IN MAGNETOTELLURIC OCCAM INVERSION
Yu Liu · Computing Techniques for Geophysical and Geochemical Exploration · 2006
Occam inversion has been widely used in magnetotelluric data processing for it's convergence stability and independent of startup model,but the Lagrange multiplier(μ) searching result in too many forward calculations and reduce the inversion speed greatly.Based on discussing the calculation method of μ,the paper put forward using parallel computation to solve this problem and realized μ scanning and searching parallel computation with master-slave programming mode.To reduce the communication and achieve load balancing,μ computation tasks were arranged in groups and each grope were dispatched to different computation node.The example shows that parallel computation can speed up the processing obviously.