How this document is organized
This guide includes the following topics:
- Performance concepts provides an overview of the optimization
process.
- Optimizing XL compiler applications and Tuning XL compiler applications discuss the compiler options available for optimizing and tuning
code.
- Advanced optimization concepts, Managing code size, and Debugging optimized code discuss
advanced techniques like optimizing loops and inlining code, and debug considerations
for optimized code.
- The following sections contain information on how to write optimization
friendly, portable XL Fortran code, that is interoperable with other languages.
Also included is a description of XL Fortran's OpenMP and SMP support with guidelines
for writing parallel code.
- The following sections contain information about XL Fortran and
its implementation that can be useful for new and experienced users alike,
as well as those who want to move their existing Fortran applications to the
XL Fortran compiler: