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arXiv · 2111.04457

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

Yutaro Akahoshi·Sinya Aoki·Tatsumi Aoyama·Issaku Kanamori·Kazuyuki Kanaya·Hideo Matsufuru·Yusuke Namekawa·Hidekatsu Nemura·Yusuke Taniguchi
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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.

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Yutaro Akahoshi, Sinya Aoki, Tatsumi Aoyama, Issaku Kanamori, Kazuyuki Kanaya, Hideo Matsufuru, Yusuke Namekawa, Hidekatsu Nemura, Yusuke Taniguchi. 2021-11-08. General purpose lattice QCD code set Bridge++ 2.0 for high performance computing. https://doi.org/10.1088/1742-6596%2F2207%2F1%2F012053

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