102 PFLOPS lattice QCD quark solver on Fugaku

102 PFLOPS lattice QCD quark solver on Fugaku

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, 1924, with 102 PFLOPS, 10% floating-point operation efficiency again...

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Veröffentlicht in:Computer physics communications 2023-01, Vol.282, p.108510, Article 108510
Hauptverfasser: Ishikawa, Ken-Ichi, Kanamori, Issaku, Matsufuru, Hideo, Miyoshi, Ikuo, Mukai, Yuta, Nakamura, Yoshifumi, Nitadori, Keigo, Tsuji, Miwako
Format: Artikel
Sprache:eng
Schlagworte:
A64FX
High performance computing
Iterative solver
Lattice QCD
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Zusammenfassung: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, 1924, 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.
ISSN:0010-4655
1879-2944
DOI:10.1016/j.cpc.2022.108510