M3E_LINSOL: A Scalable Linear Solver Package for Reservoir Simulations on Massively Parallel Computers

Abstract

A numerical package called M3E_LINSOL for the solution of large linear systems of equations arising from reservoir simulations is presented. This suite includes Krylov-based solvers combined with a set of Factorized Sparse Approximate Inverse (FSAI) preconditioners specifically designed for massively parallel architectures. The computational efficiency and scalability of these preconditioners is evaluated according to challenging real-world reservoir problems.