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arXiv · 2109.10687

102 PFLOPS Lattice QCD quark solver on Fugaku

Ken-Ichi Ishikawa·Issaku Kanamori·Hideo Matsufuru·Ikuo Miyoshi·Yuta Mukai·Yoshifumi Nakamura·Keigo Nitadori·Miwako Tsuji
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Abstract

We present results on the world's first over 100 PFLOPS single precision lattice QCD quark solver on the japanese new supercomputer Fugaku. We achieve a factor 38 time speedup from the supercomputer K on the same problem size, $192^4$, with 102 PFLOPS, 10% floating-point operation efficiency against single precision floating-point operation peak. The evaluation region is the single precision BiCGStab for a Clover-Wilson Dirac matrix with Schwarz Alternating Procedure domain decomposition preconditioning using Jacobi iteration for the local domain matrix inversion.

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Ken-Ichi Ishikawa, Issaku Kanamori, Hideo Matsufuru, Ikuo Miyoshi, Yuta Mukai, Yoshifumi Nakamura, Keigo Nitadori, Miwako Tsuji. 2021-09-22. 102 PFLOPS Lattice QCD quark solver on Fugaku. https://arxiv.org/abs/2109.10687

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