4:00 PM-6:00 PM

*Greenway C-E*

Parallel Dense Linear Algebra Libraries

This minisymposium will focus on the art of high-performance parallel dense linear algebra libraries. Such libraries are used, for example, in applications involving boundary element formulations, such as electromagnetics and acoustics, as well as eigenproblems arising in computational chemistry. In addition, dense subproblems also occur in sparse linear systems. Many researchers have resorted to the development of custom implementations for individual routines. In this minisymposium, the speakers describe recent development in the area of parallel dense linear algebra libraries. They will discuss the development of general purpose parallel dense linear algebra libraries: ScaLAPACK (developed by the LAPACK project at the University of Tennessee, Oak Ridge National Laboratory, and the University of California, Berkeley) and PLAPACK (developed at the University of Texas at Austin). They will also discuss projects that target more specialized problem domains: the PRISM library and the PEigS library, both of which primarily target dense linear eigenproblems.

**Organizer: Robert A. van de Geijn **

*University of Texas, Austin*

**4:00 PLAPACK: Parallel Linear Algebra Package***Robert van de Geijn*, Organizer; Philip Alpatov, Greg Baker, Carter Edwards, John Gunnels, Greg Morrow, and James Overfelt, University of Texas, Austin**4:30 ScaLAPACK: A Linear Algebra Library for Message-Passing Computers***Jack Dongarra*, University of Tennessee, Knoxville and Oak Ridge National Laboratory; L. S. Blackford, University of Tennessee, Knoxville; J. Choi, Soongsil University, Korea; A. Cleary, University of Tennessee, Knoxville; E. D'Azevedo, Oak Ridge National Laboratory; J. Demmel and I. Dhillon, University of California, Berkeley; S. Hammarling, The Numerical Algorithms Group, Ltd.; G. Henry, Intel; A. Petitet, University of Tennessee, Knoxville; K. Stanley, University of California, Berkeley; D. Walker, University of Wales, Cardiff; and R. C. Whaley, University of Tennessee, Knoxville**5:00 Parallel SBR: A PLAPACK Based PRISM Kernel**- Yuan-Jye J. Wu and Christian H. Bischof, Argonne National Laboratory
**5:30 The Performance of a New Algorithm in Eigensystem Problems For Computational Chemistry**- George Fann, Pacific Northwest National Laboratory, and Inderjit Dhillon and Beresford Parlett, University of California, Berkeley

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