Showing 2025Show all
2 papers · 1 filter
math.NA2025
Inexact Gauss Seidel and Coarse Solvers for AMG and s-step CG
Stephen Thomas, Pasqua D'Ambra
Communication-avoiding Krylov methods require solving small dense Gram systems at each outer iteration. We present a low-synchronization approach based on Forward Gauss--Seidel (FG…
math.NA2025
Streaming Krylov-Accelerated Stochastic Gradient Descent
Stephen Thomas
We present SKA-SGD (Streaming Krylov-Accelerated Stochastic Gradient Descent), a novel optimization approach that accelerates convergence for ill-conditioned problems by projecting…