Performance Evaluation Of The QUADRICS
Machine In Solving Chemical Rate Equations Of A
State-of-the-art Photochemical Module

R. Lorenzini; L. Delle Monache; G. Zanini; M.C. Cirillo

doi:10.2495/AIR970551

Performance Evaluation Of The QUADRICS Machine In Solving Chemical Rate Equations Of A State-of-the-art Photochemical Module

Price

Free (open access)

Transaction

WIT Transactions on Ecology and the Environment

Volume

Pages

Published

1997

Size

786 kb

Paper DOI

10.2495/AIR970551

WIT Press

Author(s)

R. Lorenzini, L. Delle Monache, G. Zanini & M.C. Cirillo

Abstract

The integration of stiff, very coupled, ordinary differential equations which describe pollutant chemical reactions is the most intensive computational task of photochemical models, since it requires at least 70% of the total CPU time. As a consequence of the local nature of these equations, the integration can be performed very efficiently by a SIMD architecture. In this work we present the porting of QSSA (Quasi Steady State Approximation) chemical solver of CALGRID photochemical model on the SIMD massively parallel platform Quadrics/APElOO which offers, in QH4 configuration, a peak performance of 25 Gflops. 1. Intr

Keywords

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Code

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