Xiaoye Sherry Li   

           
Staff Computer Scientist
Computational Research Division
Lawrence Berkeley National Laboratory
MS 50F-1650.
One Cyclotron Rd, Berkeley, CA 94720
and
Computer Science Division
Univ. of California, Berkeley
email: xsli (at) lbl (dot) gov
Tel: 510-486-6684  
Fax: 510-486-5812

Research interests:

High performance computing for scientific applications
Design and evaluation of algorithms on parallel machines
Sparse matrix computations
Numerical linear algebra

I do research and provide support for mathematical software on the parallel machines at NERSC. Currently, I am heavily involved in the DOE TOPS and NSF NPACI projects.
I received Ph.D. in Computer Science from UC Berkeley.

Selected papers:(Full list)

Sparse matrix computations
Floating-point, high-precision arithmetic
Performance evaluation
Numerical optimization
Applications

Software:

SuperLU -- Sequential and parallel libraries to solve unsymmetric sparse linear systems using LU factorization.
XBLAS -- A reference implementation for the Extended and Mixed precision BLAS standard.
ARPREC -- A C++/F90 package for performing arbitrary precision arithmetic.
CLAPACK -- Full set of LAPACK in C.
ieee_except -- A set of condition estimation routines, which are faster than those in LAPACK, by utilizing floating-point exception handling. It contains routines to manipulate IEEE exception sticky flags.

Selected recent presentations:

Algebraic Sub-structuring for Large-scale Electromagnetic Application, 16th International Conference on Domain Decomposition Methods, January 12-15, 2005, Courant Institute, New York University.
Use of Parallel SuperLU in Large-scale Scientific Applications, SIAM Annual Meeting, July 12-16, 2004. Portland, OR.
A Comparison of Three High-Precision Quadrature Schemes, Experimental Math Workshop, March 29-30, 2004. Oakland, CA.
SuperLU: A Sparse Direct Solver, SIAM Short Course on the ACTS Collection, Feburary 27, 2004, San Francisco.
Fill Reduction Algorithm Using Diagonal Markowitz Scheme with Local Symmetrization, SIAM Conference on Computational Science and Engineering, February 10-13, 2003, San Diego.

Selected professional services:

Associate Editor, SIAM J. Scientific Computing
Associate Editor, ACM Trans. Math. Software
Conferences
Referee for journals