Results 51 to 60 of about 12,853 (184)

Multigrid Algorithms for Domain-Wall Fermions

, 2012
We describe an adaptive multigrid algorithm for solving inverses of the domain-wall fermion operator. Our multigrid algorithm uses an adaptive projection of near-null vectors of the domain-wall operator onto coarser four-dimensional lattices.
Brower, R. C., Clark, M. A., Cohen, Saul D., Osborn, J. C.   +3 more
core   +1 more source

Linear-Time Solution of 3D Magnetostatics With Aggregation-Based Algebraic Multigrid Solvers

IEEE Access
Two different approaches for the linear-time solution of three-dimensional magnetostatic field problems encompassing large-scale linear systems with millions of degrees of freedom are presented.
Federico Moro, Lorenzo Codecasa, Artem Napov   +2 more
doaj   +1 more source

Multilevel acceleration of scattering-source iterations with application to electron transport

Nuclear Engineering and Technology, 2017
Acceleration/preconditioning strategies available in the SCEPTRE radiation transport code are described. A flexible transport synthetic acceleration (TSA) algorithm that uses a low-order discrete-ordinates (SN) or spherical-harmonics (PN) solve to ...
Clif Drumm, Wesley Fan
doaj   +1 more source

Light Weight Coarse Grid Aggregation for Smoothed Aggregation Algebraic Multigrid Solver

IEEE Access
The smoothed aggregation algebraic multigrid (SA-AMG) method is one of the most efficient linear solvers for large sized problems. It creates smaller-sized matrices, which is called “coarse level matrices”, from the problem matrix and the ...
Akihiro Fujii, Teruo Tanaka, Kengo Nakajima   +2 more
doaj   +1 more source

OpenFOAM iterative methods efficiency analysis for linear systems solving

Труды Института системного программирования РАН, 2018
Significant part of the computational work in numerical simulations of technical systems, physical phenomena and technological processes is solving of linear algebraic equations systems arising from the discretization of the corresponding differential or
I. K. Marchevsky, V. V. Puzikova
doaj  

Fast Decap Allocation Based on Algebraic Multigrid [PDF]

2006 IEEE/ACM International Conference on Computer Aided Design, 2006
Decap (decoupling capacitor) is an effective technique for suppressing power supply noise. Nevertheless, over-usage of decap usually causes excessive power dissipation. Therefore, the total decap area needs to be minimized subject to power supply noise constraints.
Cheng Zhuo, Jiang Hu, Min Zhao, Kangsheng Chen   +3 more
openaire   +1 more source

Multigrid methods for two-player zero-sum stochastic games

, 2011
We present a fast numerical algorithm for large scale zero-sum stochastic games with perfect information, which combines policy iteration and algebraic multigrid methods.
Akian, Akian, Altman, Bank, Bardi, Bardi, Barles, Başar, Bellman, Bensoussan, Bensoussan, Berman, Bertsekas, Bokanowski, Bonnans, Brandt, Brandt, Cochet-Terrasson, Crandall, Davis, Denardo, Denardo, Elliott, Falgout, Fearnley, Filar, Fleming, Fleming, Fleming, Friedman, Friedmann, Hoffman, Hoppe, Hoppe, Howard, Kushner, Kushner, Lions, McEneaney, Mense, Munos, Neyman, Notay, Puterman, Puterman, Rockafellar, Ruge, Shapley, Shimkin, Sorin, Świpolhkech   +50 more
core   +3 more sources

Multi-GPU Acceleration for Finite Element Analysis in Structural Mechanics

Applied Sciences
This work evaluates the computing performance of finite element analysis in structural mechanics using modern multi-GPU systems. We can avoid the usual memory limitations when using one GPU device for many-core computing using multiple GPUs for ...
David Herrero-Pérez, Humberto Martínez-Barberá   +1 more
doaj   +1 more source

Extension of a Non-Oscillatory Forward-in-Time Scheme to Detached Eddy Simulation of Stratified Turbulent Flows With Unstructured Meshes

IEEE Access, 2019
A detached eddy simulation algorithm is developed based on the non-oscillatory forward-in-time (NFT) multidimensional positive definite advection transport algorithm (MPDATA) scheme for stratified turbulent flows with low or moderate Reynolds numbers on ...
Zhao Zhang, Tao Zhang
doaj   +1 more source

Scalable Parallel Algebraic Multigrid Solvers [PDF]

, 2005
The authors propose a parallel algebraic multilevel algorithm (AMG), which has the novel feature that the subproblem residing in each processor is defined over the entire partition domain, although the vast majority of unknowns for each subproblem are associated with the partition owned by the corresponding processor. This feature ensures that a global
Bank, R, Lu, S, Tong, C, Vassilevski, P
openaire   +2 more sources