Gauge fixing in lattice QCD with multi-GPUs

TL;DR

This paper introduces cuLGT, a GPU-accelerated code for gauge fixing in lattice QCD, supporting multiple algorithms and gauges, with performance evaluations on single and multi-GPU systems.

Contribution

The paper presents a GPU-based implementation of gauge fixing algorithms for lattice QCD, enabling faster computations with support for multiple gauges and algorithms.

Findings

cuLGT achieves significant speedup on multi-GPU systems.

Supports various gauge fixing algorithms including overrelaxation and simulated annealing.

Provides performance benchmarks for different GPU configurations.

Abstract

Here we present the cuLGT code for gauge fixing in lattice gauge field theories with graphic processing units (GPUs). Implementations for SU(3) Coulomb, Landau and maximally Abelian gauge fixing are available and the overrelaxation, stochastic relaxation and simulated annealing algorithms are supported. Performance results for single and multi-GPUs are given.