High Performance Parallelism Pearls Volume Two

Chapter 2

Numerical Weather Prediction Optimization

Tom Henderson*; John Michalakes^†; Indraneil Gokhale^‡; Ashish Jha^‡    * National Oceanic and Atmospheric Administration (NOAA)/Earth Systems Research Laboratory, in Affiliation with the Colorado State University's Cooperative Institute for Research in the Atmosphere, USA^† NOAA National Centers for Environmental Prediction, USA^‡ Intel Corporation, USA

Abstract

This chapter describes the efforts to improve performance of the widely used WSM6 microphysics package used in numerical weather prediction via a variety of techniques including threading, vectorization, array alignment, improving data locality, and optional use of compile-time constants for loop and array index bounds. Code examples ...