Publications

A Two-level GPU-Accelerated Incomplete LU Preconditioner for General Sparse Linear Systems

T. Xu, R. Li, and D. Osei-Kuffuor

International Journal of High Performance Computing Applications (2025)

DOI PDF CODE

Anderson Acceleration with Truncated Gram-Schmidt

Z. Tang, T. Xu, H. He, Y. Saad, Y. Xi

SIAM Journal on Matrix Analysis and Applications (2024)

DOI PDF CODE

An Adaptive Factorized Nyström Preconditioner for Regularized Kernel Matrices

S. Zhao, T. Xu, H. Huang, E. Chow, and Y. Xi

SIAM Journal on Scientific Computing (2024)

DOI PDF CODE

A Parallel Algorithm for Computing Partial Spectral Factorizations of Matrix Pencils via Chebyshev Approximation

T. Xu, A. P. Austin, V. Kalantzis, and Y. Saad

SIAM Journal on Scientific Computing (2023)

DOI PDF CODE

parGeMSLR: A Parallel Multilevel Schur Complement Low-Rank Preconditioning and Solution Package for General Sparse Matrices

T. Xu, V. Kalantzis, R. Li, Y. Xi, G. Dillon, and Y. Saad

Parallel Computing (2022), Vol. 113

DOI PDF CODE

Superconvergence of Some Linear and Quadratic Functionals for Higher-Order Finite Elements

V. Shaydurov, and T. Xu

Finite Difference Methods, Theory and Applications (2015)

DOI

Mixed Precision Orthogonalization-Free Projection Methods for Eigenvalue and Singular Value Problems

T. Xu, Z. Zhang, J. Chen, Y. Saad, Y. Xi

arXiv:2505.00281 (2025)

arXiv PDF CODE

Preconditioned Additive Gaussian Processes with Fourier Acceleration

T. Wagner, T. Xu, F. Nestler, Y. Xi, M. Stoll

arXiv:2504.00480v1 (2025)

arXiv PDF CODE

HiGP: A High-Performance Python Package for Gaussian Process

H. Huang, T. Xu, Y. Xi, and E. Chow

arXiv:2503.02259 (2025)

arXiv PDF CODE

Multiscale Neural Networks for Approximating Green's Functions

W. Hao, R. Li, Y. Xi, T. Xu, and Y. Yang

arXiv:2410.18439 (2024)

arXiv PDF CODE

Parallel Schur Complement Algorithms for the Solution of Sparse Linear Systems and Eigenvalue Problems

Tianshi Xu

University of Minnesota, Twin Cities (July 2023)
Advisor: Professor Yousef Saad

Repository Link

Journal Publications