November 2014
Intermediate to advanced
600 pages
17h 20m
English
Content preview from High Performance Parallelism Pearls Volume One
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Chapter 4
Optimizing for Reacting Navier-Stokes Equations
Antonio Valles*; Weiqun Zhang† * Intel, USA† Lawrence Berkeley National Laboratory, USA
Abstract
The optimizations discussed in this chapter significantly improved concurrency on both Intel Xeon Phi coprocessors and Intel Xeon processors. OpenMP scaling of 240 threads vs. one thread is now 100x, was 38x in first version for coprocessors. Similarly, processor scaling improved to 16x from 10x. The chapter discusses source modifications to transform fine-grain thread parallel approach to be more coarse-grain, memory allocation considerations on Intel Xeon Phi coprocessors, and source transformations to improve vectorization. In addition, this chapter briefly demonstrates how new features ...
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