Mixed Precision GMRES‐Based Iterative Refinement With ILU Preconditioning
State‐of‐the‐art iterative refinement (IR)‐based methods mainly employ LU factorization to construct preconditioners, which severely limits their applicability to sparse linear systems due to excessive memory overhead. In order to address such issues, we exploit incomplete LU ( ILU ) factorization as a precon...