POWER8 High-performance Computing Guide IBM Power System S822LC (8335-GTB) Edition

Measuring and tuning applications

This chapter describes how to measure and tune applications.

This chapter includes the following topics:

•4.1, “Effects of basic performance tuning techniques” on page 122

•4.2, “General methodology of performance benchmarking” on page 137

•4.3, “Sample code for the construction of thread affinity strings” on page 145

•4.4, “ESSL performance results” on page 149

•4.5, “GPU tuning” on page 154

•4.6, “Application development and tuning tools” on page 159

4.1 Effects of basic performance tuning techniques

This section ...