Year: 2026
Type: preprint
Abstract: Multi-right-hand-side multigrid inverters for lattice QCD are much less memory constrained than single-right-hand-side Krylov solvers, so the upper bound on efficiency of modern solvers is much higher than what was historically possible. This work presents a reanalysis of roofline estimates to reflect this new reality. It also describes the qc library, which implements multi-right-hand-side multigrid at an efficiency that can exceed 50% of the processor roofline.
Source: arXiv (Cornell University)
Author: Grebe, Anthony V.
Institution: University of Maryland, College Park
Language: English
Subfield: Hardware and Architecture
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7223837383