The IBM XL compiler family offers C, C++, and Fortran compilers built on an industry-wide reputation for robustness, versatility and standards compliance. A significant strength of these compilers is in their optimization capabilities, the ability to improve code generation and produce fast-executing code on PowerPC-based systems. This document introduces the most important capabilities and describes the compiler options, source constructs, and techniques that you can use to maximize the performance of yo

This Redpaper gives a broad understanding of the programming environment of the IBM PowerPC 970 microprocessor that is implemented in the IBM eServer BladeCenter JS20. It also provides information on how to take advantage of the Vector Multimedia Extensions (VMX) execution unit found in the PowerPC 970 to increase the performance of applications in 3D graphics, modelling and simulation, digital signal processing, and others.