General purpose lattice QCD code set Bridge++ 2.0 for high performance computing

Abstract

Bridge++ is a general-purpose code set for a numerical simulation of lattice QCD aiming at a readable, extensible, and portable code while keeping practically high performance. The previous version of Bridge++ is implemented in double precision with a fixed data layout. To exploit the high arithmetic capability of new processor architecture, we extend the Bridge++ code so that optimized code is available as a new branch, i.e., an alternative to the original code. This paper explains our strategy of implementation and displays application examples to the following architectures and systems: Intel AVX-512 on Xeon Phi Knights Landing, Arm A64FX-SVE on Fujitsu A64FX (Fugaku), NEC SX-Aurora TSUBASA, and GPU cluster with NVIDIA V100.

6 pages, 6 figures. Talk by I.Kanamori at the XXXII IUPAP Conference on Computational Physics (CCP2021), Coventry, UK, 1-5 August 2021

References in corpus (1)

• Object-oriented implementation of algebraic multi-grid solver for lattice QCD on SIMD architectures and GPU clusters

Cited by in corpus (5)

• Bridge++ 2.0: Benchmark results on supercomputer Fugaku
• Wilson matrix kernel for lattice QCD on A64FX architecture
• Mixed precision solvers with half-precision floating point numbers for Lattice QCD on A64FX processor
• Accelerating iterative linear equation solver using modified domain-wall fermion matrix in lattice QCD simulations
• The dynamics of zero modes in lattice gauge theory -- difference between SU(2) and SU(3) in 4D