November 2014
Intermediate to advanced
600 pages
17h 20m
English
Content preview from High Performance Parallelism Pearls Volume One
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Chapter 23
Characterization and Optimization Methodology Applied to Stencil Computations
Cedric Andreolli*; Philippe Thierry*; Leonardo Borges†; Gregg Skinner†; Chuck Yount† * Intel, France† Intel, USA
Abstract
This chapter describes the characterization and optimization methodology applied to a 3D finite differences (3DFD) algorithm used to solve constant or variable density isotropic acoustic wave equation (Iso-3DFD).
Starting from the most basic implementation and to get close to its achievable performance we present a series of tuning steps from the basic version up to an implementation using intrinsic functions. The tuning techniques described here include scalable parallelization (collaborative thread blocking), maximizing memory bandwidth ...
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