arXiv 2201.037552022-01-11hep-latphysics.comp-ph

Performance of several Lanczos eigensolvers with HISQ fermions

Hwancheol Jeong, Carleton DeTar, Steven Gottlieb

备注：: 9 pages, 4 figures, Proceedings of the 38th International Symposium on Lattice Field Theory (LATTICE2021), 26th-30th July, 2021, Zoom/Gather@Massachusetts Institute of Technology

英文摘要：

We investigate the state-of-the-art Lanczos eigensolvers available in the Grid and QUDA libraries. They include Implicitly Restarted Lanczos, Thick-Restart Lanczos, and Block Lanczos. We measure and analyze their performance for the Highly Improved Staggered Quark (HISQ) Dirac operator. We also discuss optimization of Chebyshev acceleration.

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