Multigrid 1: Online Auto-Tuning Technique for Algebraic Multi- Grid Solver


Akihiro Fujii

16:10:00 - 16:35:00

101 , Mathematics Research Center Building (ori. New Math. Bldg.)

We are developing Algebraic Multigrid (AMG) library for various computing environment including GPU clusters. AMG method is one of the most efficient linear solvers for Poisson problems, and has many parameters to be set. Optimum values of them depend on problem matrices and influence solvers efficiency strongly. Thus, this talk will pick up a simple flow analysis code and consider online tuning technique for adjusting these parameter values.