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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 document provides an overview of XL C/C++ compilers and how their features can help you with your C and C++ development needs.

This paper contains an overview of IBM XL C/C++ and Fortran compilers, outlining their history, unique capabilities and cross-platform support. You will also find a performance overview and a summary of their current strategic advantages.

The IBM® Blue Gene®/L supercomputer consists of up to 65,536 compute nodes. Each compute node contains 2 Power PC® 440 processors, each enhanced with a specially designed dual Floating Point Unit (FPU). The presence of a second FPU on the Blue Gene/L processors theoretically allows double the performance on floating point algorithms over just using a single FPU. The IBM XL compilers can automatically take advantage of the dual FPU unit, but performance gains achieved by doing so depend strongly on the prope

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.

The XL C/C++ Advanced Edition V6.0 for Mac OS X compiler is part of a multi-platform XL compiler family derived from a common code base. This paper details the features of the XL C/C++ Advanced Edition V6.0 for Mac OS X compiler, including the following highlights: C99 features, GNU compatibility features, Methods for generating C++ templates, hints and tips to improve portability with Mac OS X, and an optimization overview.