Wilson matrix kernel for lattice QCD on A64FX architecture

Abstract

We study the implementation of the even-odd Wilson fermion matrix for lattice QCD simulations on the A64FX architecture. Efficient coding of the stencil operation is investigated for two-dimensional packing to SIMD vectors. We measure the sustained performance on the supercomputer Fugaku at RIKEN R-CCS and show the profiler result of our code, which may signal an unexpected source of slow-down in addition to the detailed efficiency of each part of the code.

10 pages, contribtuion to the International Workshop on Arm-based HPC: Practice and Experience (IWAHPCE-2023), held in conjunction with The International Conference on High Performance Computing in Asia-Pacific Region (HPC Asia 2023), Singapore, Feb 27 - March 2, 2023

References in corpus (2)

• General purpose lattice QCD code set Bridge++ 2.0 for high performance computing
• Bridge++ 2.0: Benchmark results on supercomputer Fugaku

Cited by in corpus (2)

• Bridge++ 2.0: Benchmark results on supercomputer Fugaku
• Mixed precision solvers with half-precision floating point numbers for Lattice QCD on A64FX processor