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arXiv · 2404.06713

A Reexamination of the COnfLUX 2.5D LU Factorization Algorithm

Yuan Tang
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Abstract

This article conducts a reexamination of the research conducted by Kwasniewski et al., focusing on their adaptation of the 2.5D LU factorization algorithm with tournament pivoting, known as \func{COnfLUX}. Our reexamination reveals potential concerns regarding the upper bound, empirical investigation methods, and lower bound, despite the original study providing a theoretical foundation and an instantiation of the proposed algorithm. This paper offers a reexamination of these matters, highlighting probable shortcomings in the original investigation. Our observations are intended to enhance the development and comprehension of parallel matrix factorization algorithms.

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Yuan Tang. 2024-04-10. A Reexamination of the COnfLUX 2.5D LU Factorization Algorithm. https://arxiv.org/abs/2404.06713

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