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SIAMSC
2010
120views more  SIAMSC 2010»
13 years 3 months ago
Weighted Matrix Ordering and Parallel Banded Preconditioners for Iterative Linear System Solvers
The emergence of multicore architectures and highly scalable platforms motivates the development of novel algorithms and techniques that emphasize concurrency and are tolerant of ...
Murat Manguoglu, Mehmet Koyutürk, Ahmed H. Sa...
SIAMSC
2010
143views more  SIAMSC 2010»
13 years 3 months ago
Computing and Deflating Eigenvalues While Solving Multiple Right-Hand Side Linear Systems with an Application to Quantum Chromod
Abstract. We present a new algorithm that computes eigenvalues and eigenvectors of a Hermitian positive definite matrix while solving a linear system of equations with Conjugate G...
Andreas Stathopoulos, Konstantinos Orginos
SIAMSC
2010
231views more  SIAMSC 2010»
13 years 3 months ago
Optimal Control of Parameter-Dependent Convection-Diffusion Problems around Rigid Bodies
Abstract. This paper is concerned with optimal control problems of partial differential equations. In particular, parameterized convection-diffusion problems are considered, wher...
Timo Tonn, Karsten Urban, Stefan Volkwein
SIAMSC
2010
198views more  SIAMSC 2010»
13 years 3 months ago
Analysis of Block Parareal Preconditioners for Parabolic Optimal Control Problems
In this paper, we describe block matrix algorithms for the iterative solution of large scale linear-quadratic optimal control problems arising from the optimal control of parabolic...
Tarek P. Mathew, Marcus Sarkis, Christian E. Schae...
SIAMSC
2010
130views more  SIAMSC 2010»
13 years 3 months ago
Discrete-Ordinate Discontinuous Galerkin Methods for Solving the Radiative Transfer Equation
The radiative transfer equation (RTE) occurs in a wide variety of applications. In this paper, we study discrete-ordinate discontinuous Galerkin methods for solving the RTE. The nu...
Weimin Han, Jianguo Huang, Joseph A. Eichholz
SIAMSC
2010
151views more  SIAMSC 2010»
13 years 3 months ago
An Inner-Outer Iteration for Computing PageRank
We present a new iterative scheme for PageRank computation. The algorithm is applied to the linear system formulation of the problem, using inner-outer stationary iterations. It is...
David F. Gleich, Andrew P. Gray, Chen Greif, Tracy...
SIAMSC
2010
123views more  SIAMSC 2010»
13 years 3 months ago
Optimal Solvers for PDE-Constrained Optimization
Tyrone Rees, H. Sue Dollar, Andrew J. Wathen
SIAMSC
2010
132views more  SIAMSC 2010»
13 years 3 months ago
New Algorithms for Optimal Online Checkpointing
Frequently, the computation of derivatives for optimizing time-dependent problems is based on the integration of the adjoint differential equation. For this purpose, the knowledge...
Philipp Stumm, Andrea Walther
SIAMSC
2010
141views more  SIAMSC 2010»
13 years 3 months ago
An Iterative Method for Edge-Preserving MAP Estimation When Data-Noise Is Poisson
In numerous applications of image processing, e.g. astronomical and medical imaging, data-noise is well-modeled by a Poisson distribution. This motivates the use of the negative-lo...
Johnathan M. Bardsley, John Goldes