Toward Compute-Bound Lattice-QCD Software

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.

Authors

Publication Details

Journal
arXiv (Cornell University)
Published
2026-10-26
DOI
https://doi.org/10.48550/arxiv.2610.35526
Primary Topic
Parallel Computing and Optimization Techniques
Type
preprint
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preprint

Toward Compute-Bound Lattice-QCD Software

Anthony V. Grebe
arXiv (Cornell University)
Parallel Computing and Optimization Techniques
preprint

Toward Compute-Bound Lattice-QCD Software

Anthony V. Grebe
preprint en

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.

arXiv (Cornell University)
Parallel Computing and Optimization Techniques
DOIOpen Access PDFOpenAlex
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Toward Compute-Bound Lattice-QCD Software — Anthony V. Grebe · arXiv (Cornell University) (2026) | TGRS Research Map | TGRS