CISE Submissions

Item: REP-2006-290

Item:REP-2006-290

Title:Algorithm 8xx: CHOLMOD, supernodal sparse Cholesky factorization and update/downdate

Yanqing Chen
Timothy A. Davis
William W. Hager
Siva Rajamanickam

Abstract:
CHOLMOD is a set of routines for factorizing sparse symmetric positive definite matrices of the form A or AA', updating/downdating a sparse Cholesky factorization, solving linear systems, updating/downdating the solution to the triangular system Lx=b, and many other sparse matrix functions for both symmetric and unsymmetric matrices. Its supernodal Cholesky factorization relies on LAPACK and the Level-3 BLAS, and obtains a substantial fraction of the peak performance of the BLAS. Both real and complex matrices are supported. CHOLMOD is written in ANSI/ISO C, with both C and MATLAB exttrademark interfaces. It appears in MATLAB 7.2 as x=A when A is sparse symmetric positive definite, as well as in several other sparse matrix functions.

Supporting File:here

Select Departmental Reports

To select a single entry given the item reference number, enter the reference number in the Item: box. Other select options will then be ignored.

The other select options (Category:, Select by Time:, and Select by Author: can be used in any combination. However, only one of the Select by Author: options can be used. You can either select entries from a specific CISE faculty member, or from any (non faculty) CISE user, or you can enter in part or all of the author's name <-- ' --> (which is case insensitive). But only the FIRST one will be used. For many entries, the username may not have been entered, and in this case the first two options will not work for those entries, but selecting by last name will.

The Display Level: option tells how much information to display for each entry ranging from the lease (Index) to the most (Full Listing).

Item:

Category:

Select by Time:

Select by Author:

CISE Faculty Member:
CISE Member:
Name:

Display Level:

Index
Short Listing
Full Listing

Departmental Report Categories

Technical Reports
	Coordinator: Alexander M Thompson Coordinator: Dan H. Eicher Coordinator: John L. Kramer Jr.

To submit items for this page, please log in on the CISE submit page.