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Static load balancing for CFD distributed simulations
The cost/performance ratio of networks of workstations has been constantly improving. This trend is expected to continue in the near future. The aggregate peak rate of such systems often matches or exceeds the peak rate offered by the fastest parallel computers. This has motivated research towards using a network of computers, interconnected via a fast network (cluster system) or a simple Local Area Network (LAN) (distributed system), for high performance concurrent computations. Some of the important research issues arise such as (1) Optimal problem partitioning and virtual interconnection topology mapping; (2) Optimal execution scheduling and load balancing. CFD codes have been efficiently implemented on homogeneous parallel systems in the past. In particular, the helicopter aerodynamics CFD code TURNS has been implemented with MPI on the IBM SP with parallel relaxation and Krylov iterative methods used in place of more traditional recursive algorithms to enhance performance. In this implementation the space domain is divided into equal subdomain which are mapped to the processors. We consider the implementation of TURNS on a LAN of heterogeneous workstations. In order to deal with the problem of load balancing due to the different processor speeds we propose a suboptimal algorithm of dividing the space domain …
Date:
January 26, 2001
Creator:
Chronopoulos, A T; Grosu, D; Wissink, A & Benche, M
Object Type:
Article
System:
The UNT Digital Library
Texas Register, Volume 26, Number 4, Pages 857-1040, January 26, 2001
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
January 26, 2001
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
U.S. National Committee for CODATA. Final technical report: September 15, 1996 to September 14, 2000
This report describes the activities of the U.S. National Committee (USNC) for CODATA from September 16, 1996, through September 14, 2000. The USNC/CODATA counsels the U.S. National Delegate to CODATA on the U.S. position regarding official CODATA business. It also provides a link between the United States and international data compilation and evaluation activities, taking into account the needs of the scientific and technological user community, and undertakes special studies and other actions consistent with the overall CODATA objectives.
Date:
January 26, 2001
Creator:
Uhlir, Paul F.
Object Type:
Report
System:
The UNT Digital Library
University Press (Beaumont, Tex.), Vol. 77, No. 25, Ed. 1 Friday, January 26, 2001
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
January 26, 2001
Creator:
Cobb, Joshua
Object Type:
Newspaper
System:
The Portal to Texas History
["Wariness and Optimism Vie as Gays View New President" article, January 26, 2001]
An article written by Elizabeth Becker for the New York Times about the acknowledgement of the Republican Unity Coalition and inclusion of gay and lesbian people in ceremonies. The piece also speaks about the opinions of the new president George W. Bush and vice president Dick Cheney.
Date:
January 26, 2001
Creator:
Becker, Elizabeth
Object Type:
Article
System:
The UNT Digital Library