Optimizing an air quality model's algorithms for the cray Y-MP and the MASPAR MP-1

Technical Report · Sat Jan 01 00:00:00 EST 1994

OSTI ID:6717358

Young, J O

The Regional Oxidant Model (ROM) has been developed and enhanced over the past decade by the U.S. Environmental Protection Agency (EPA) in response to the need for an appropriate simulation model capable of simulating multi-day chemical effects and the long-range transport of ozone and its percursors. The main purpose of the model is to test the effectiveness of emission control strategies on regional and urban airshed ozone concentrations. The EPA currently uses ROM2.2 to address many issues related to the 1990 revisions of the Clean Air Act with different modeling regions including the SUPROXA domain that is essentially the eastern half of the U.S. and southeast Canada. The large file sizes and amount of processing creates a proportionately large demand for model throughput and other computational resources, resulting in a critical need to have an optimized version of the core model on a high performance platform. The paper discusses efforts in optimizing the ROM core model on the Cray Y-MP and subsequently on the MasPar MP-1.

• Research Organization: Environmental Protection Agency, Research Triangle Park, NC (United States). Atmospheric Research and Exposure Assessment Lab.
• OSTI ID: 6717358
• Report Number(s): PB-95-124780/XAB; EPA-600/A-94/177
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
AIR QUALITY
COMPUTERIZED SIMULATION
CRAY COMPUTERS
OPTIMIZATION
OZONE
GENERAL CIRCULATION MODELS
LONG-RANGE TRANSPORT
COMPUTERS
ENVIRONMENTAL QUALITY
ENVIRONMENTAL TRANSPORT
MASS TRANSFER
MATHEMATICAL MODELS
SIMULATION
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
990200 - Mathematics & Computers