Comparison of multigrid algorithms for high‐order continuous finite element discretizations
Comparison of multigrid algorithms for high‐order continuous finite element discretizations
Summary We present a comparison of different multigrid approaches for the solution of systems arising from high‐order continuous finite element discretizations of elliptic partial differential equations on complex geometries. We consider the pointwise Jacobi, the Chebyshev‐accelerated Jacobi, and the symmetric successive over‐relaxation smoothers, as well as elementwise block Jacobi smoothing. …