Gary W Howell

Works (4)

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2018 article

Iterative Solution of Sparse Linear Least Squares using LU Factorization

PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON HIGH PERFORMANCE COMPUTING IN ASIA-PACIFIC REGION (HPC ASIA 2018), pp. 47–53.

By: G. Howell & M. Baboulin*

Source: Web Of Science
Added: January 21, 2019

2016 article

LU Preconditioning for Overdetermined Sparse Least Squares Problems

PARALLEL PROCESSING AND APPLIED MATHEMATICS, PPAM 2015, PT I, Vol. 9573, pp. 128–137.

By: G. Howell & M. Baboulin*

author keywords: Sparse linear least squares; Iterative methods; Preconditioning; Conjugate gradient algorithm; lsqr algorithm
Source: Web Of Science
Added: August 6, 2018

2008 journal article

Cache efficient bidiagonalization using BLAS 2.5 operators

ACM TRANSACTIONS ON MATHEMATICAL SOFTWARE, 34(3).

By: G. Howell, J. Demmel*, C. Fulton*, S. Hammarling* & K. Marmol*

author keywords: algorithms; performance; BLAS 2.5; bidiagonalization; cache-efficient; Householder reflections; matrix factorization; singular values; SVD
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Algorithm 841: BHESS: Gaussian reduction to a similar banded Hessenberg form

ACM TRANSACTIONS ON MATHEMATICAL SOFTWARE, 31(1), 166–185.

By: G. Howell & N. Diaa

author keywords: algorithms; Gaussian similarity transformations; matrix eigenvalues; spectra; Hessenberg form; cache-efficient; Sylvester equation
Source: Web Of Science
Added: August 6, 2018