TY  - CONF
AU  - Bücker, H. Martin
TI  - Isoefficiency Analysis of Parallel QMR-Like Iterative Methods and its Implications on Parallel Algorithm Design
VL  - 96/1
CY  - Clausthal-Zellerfeld
PB  - Institut für Informatik, 1996
M1  - FZJ-2015-02057
T2  - Informatik-Bericht
SP  - 28-49
PY  - 1996
AB  - A specific problem arising out of electrostatics is taken as an example to demonstrate the process of, firstly, transforming a physical problem into a mathematical model and, secondly, its numerical solution by generating a system of linear equations via finite difference approximations. The resulting nonsymmetric sparse linear system is solved by a class of iterative methods that is defined by taking the Quasi-Minimal Residual(QMR) method as a typical member. A performance model called isoefficiency concept is used to analyze the behavior of such methods implemented on parallel distributed memory computers with two-dimensional mesh topology. The isoefficiency concept is employed to compare two different mappings of data to processors as well as to give hints how QMR-like iterative methods should be designed with respect to parallel computing.
T2  - 14th Workshop on Parallel Processing
CY  - 25 Sep 1995 - 29 Sep 1995, Lessach (Austria)
Y2  - 25 Sep 1995 - 29 Sep 1995
M2  - Lessach, Austria
LB  - PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
UR  - https://juser.fz-juelich.de/record/188733
ER  -