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Coupled Newton-Krylov solver for improved CHAD cache utilization and performance.

DE2001775257

Publication Date	2000
Personal Author	Canfield, T. R.; Chien, T. H.; Domanus, H. M.; Tentner, A. M.; Tzanos, C. P.; Valentin, R. A.; Weber, D. P.
Page Count	4
Abstract	CHAD (Computational Hydrodynamics for Advanced Design) is a computer program that has been developed to analyze flows in automotive and defense applications. Extensive performance analysis of the CHAD computer program indicated a need to address cache memory use to increase computational performance. Several strategies have been adopted to achieve this goal: simultaneous solution of the coupled Navier-Stokes equations, data clustering, and data ordering. A coupled Newton-Krylov solver has been incorporated into a version of the CHAD program, resulting in consistent improvement in run times that varies from 50% to 200%. Further work will be required to tune the solver for optimal performance. In addition, experiments with data cluster and reordering indicate a potential for performance improvement.
Keywords	Fluid flow Hydrodynamics Computerized simulation C codes Navier-stokes equations Performance Automobiles Military equipment Memory devices Data processing Computer calculations
Source Agency	Technical Information Center Oak Ridge Tennessee
NTIS Subject Category	46B - Fluid Mechanics 62B - Computer Software
Corporate Authors	Argonne National Lab., IL.; Department of Energy, Washington, DC.
Supplemental Notes	bad image file
Document Type	Conference Proceedings
NTIS Issue Number	200124
Contract Number	W-31109-ENG-38

Coupled Newton-Krylov solver for improved CHAD cache utilization and performance.

Coupled Newton-Krylov solver for improved CHAD cache utilization and performance.
DE2001775257

Publication Date	2000
Personal Author	Canfield, T. R.; Chien, T. H.; Domanus, H. M.; Tentner, A. M.; Tzanos, C. P.; Valentin, R. A.; Weber, D. P.
Page Count	4
Abstract	CHAD (Computational Hydrodynamics for Advanced Design) is a computer program that has been developed to analyze flows in automotive and defense applications. Extensive performance analysis of the CHAD computer program indicated a need to address cache memory use to increase computational performance. Several strategies have been adopted to achieve this goal: simultaneous solution of the coupled Navier-Stokes equations, data clustering, and data ordering. A coupled Newton-Krylov solver has been incorporated into a version of the CHAD program, resulting in consistent improvement in run times that varies from 50% to 200%. Further work will be required to tune the solver for optimal performance. In addition, experiments with data cluster and reordering indicate a potential for performance improvement.
Keywords	Fluid flow Hydrodynamics Computerized simulation C codes Navier-stokes equations Performance Automobiles Military equipment Memory devices Data processing Computer calculations
Source Agency	Technical Information Center Oak Ridge Tennessee
NTIS Subject Category	46B - Fluid Mechanics 62B - Computer Software
Corporate Authors	Argonne National Lab., IL.; Department of Energy, Washington, DC.
Supplemental Notes	bad image file
Document Type	Conference Proceedings
NTIS Issue Number	200124
Contract Number	W-31109-ENG-38