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Examination and Significance of Sparse Preconditioners for High-Order Finite…

Award Information

Agency:
Department of Energy
Branch:
N/A
Award ID:
89915
Program Year/Program:
2009 / SBIR
Agency Tracking Number:
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Tech-x Corporation
5621 Arapahoe Ave Boulder, CO 80303-1379
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 2009
Title: Examination and Significance of Sparse Preconditioners for High-Order Finite Element Systems
Agency: DOE
Contract: DE-FG02-08ER85154
Award Amount: $749,877.00
 

Abstract:

Hundreds of millions of dollars have been committed toward the study of complex natural phenomena on today¿s massively parallel computers. Access to such computing power is enabling scientists to employ highly-accurate high-order finite element methods to solve previously intractable problems. However, these high-order finite element methods present new challenges to existing solution methods, because of fundamental differences in corresponding matrices and the need for higher memory consumption. This project will investigate the use of algebraic multi-grid preconditioners generated from sparser matrices as a cheaper alternative to the algebraic multi-grid preconditioners generated from high-order finite element matrices. Phase I compared the two algebraic multi-grid approaches: (1) the original high-order finite element matrix, and (2) a sparser matrix equivalent to using tri-linear finite elements on a mesh of equivalent order. It was demonstrated that the sparser approaches yield faster simulation times and reduced memory costs for most problems of interest. In Phase II, new capabilities will be added to two codes (HYPRE and PETSc), enabling users to construct a sparse approximation of a dense matrix generated from high-order finite element discretizations. This matrix will be used to construct cheaper algebraic multigrid-based preconditioners that still will enable fast simu­lations with nearly optimal convergence behavior. Commercial Applications and other Benefits as described by the awardee: DOE projects employing high-order finite elements should gain greater efficiency in their simulations on today¿s supercomputers when using these preconditioners. In addition, the new computational approach should generate consulting opportunities to assist users in optimally employing these preconditioners in their code

Principal Investigator:

Travis Austin
Dr.
3039962038
austin@txcorp.com

Business Contact:

Laurence D. Nelson
Mr.
7209741856
lnelson@txcorp.com
Small Business Information at Submission:

Tech-x Corporation
5621 Arapahoe Avenue Suite A Boulder, CO 80303

EIN/Tax ID: 841256533
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No