Author: J. W. SkilesPublisher:
ISBN:
Category :
Languages : en
Pages : 48
Book Description
Transferring Ecosystem Simulation Codes to Supercomputers
Author: J. W. SkilesTransferring Ecosystem Simulation Codes to Supercomputers
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781722913724
Category :
Languages : en
Pages : 48
Book Description
Many ecosystem simulation computer codes have been developed in the last twenty-five years. This development took place initially on main-frame computers, then mini-computers, and more recently, on micro-computers and workstations. Supercomputing platforms (both parallel and distributed systems) have been largely unused, however, because of the perceived difficulty in accessing and using the machines. Also, significant differences in the system architectures of sequential, scalar computers and parallel and/or vector supercomputers must be considered. We have transferred a grassland simulation model (developed on a VAX) to a Cray Y-MP/C90. We describe porting the model to the Cray and the changes we made to exploit the parallelism in the application and improve code execution. The Cray executed the model 30 times faster than the VAX and 10 times faster than a Unix workstation. We achieved an additional speedup of 30 percent by using the compiler's vectoring and 'in-line' capabilities. The code runs at only about 5 percent of the Cray's peak speed because it ineffectively uses the vector and parallel processing capabilities of the Cray. We expect that by restructuring the code, it could execute an additional six to ten times faster. Skiles, J. W. and Schulbach, C. H. Ames Research Center RTOP 233-01-03-05...
Scientific and Technical Aerospace Reports
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 488
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Monthly Catalog of United States Government Publications
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1482
Book Description
Monthly Catalogue, United States Public Documents
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1484
Book Description
Government Reports Announcements & Index
Author: Bulletin of the Ecological Society of America
Author: Ecological Society of AmericaPublisher:
ISBN:
Category : Ecology
Languages : en
Pages : 1150
Book Description
The Aeronautical Journal
Author: Major Douglas-fir Habitat Types of Central Idaho
Author: Robert Wilbur SteelePublisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 742
Book Description
Supercomputing
Author: Vladimir VoevodinPublisher: Springer Nature
ISBN: 303122941X
Category : Computers
Languages : en
Pages : 713
Book Description
This book constitutes the refereed proceedings of the 8th Russian Supercomputing Days on Supercomputing, RuSCDays 2022, which took place in Moscow, Russia, in September 2022. The 49 full papers and 1 short paper presented in this volume were carefully reviewed and selected from 94 submissions. The papers are organized in the following topical sections: Supercomputer Simulation; HPC, BigData, AI: Architectures, Technologies, Tools; Distributed and Cloud Computing.