Performance concepts

IBM(R) XL Fortran Advanced Edition V10.1 for Linux(R) is an optimizing, standards-based, command-line compiler for the Linux operating system, running on PowerPC(R) hardware with the PowerPC architecture. The XL Fortran compiler enables application developers to create and maintain optimized 32-bit and 64-bit applications for the Linux operating system. The compiler offers a diversified portfolio of optimization techniques that allow an application developer to exploit the multi-layered architecture of the PowerPC processor.

This guide provides information to help programmers maximize the performance of XL Fortran applications at run time and properly exploit the opportunities inherent in PowerPC architectures. This process, consisting of good programming techniques and a combination of optimization and tuning, can help your applications execute faster and use fewer machine resources.

This section includes the following topics: