Solver Development in nekRS: Optimal Chebyshev Smoothers and One-sided V-cycles
Date:
Demonstrate improved convergence rate using novel 4th-kind and optimal 4th-kind Chebyshev smoothers based on Lottes’s work Optimal polynomial smoothers for multigrid V-cycles. In addition, analyze the applicability of one-sided V-cycles to improve the convergence rate of Chebyshev smoothers in both a high-order $p$-multigrid and finite difference geometric multigrid applications.
A pre-print of the paper will be made available shortly.