The XL Fortran Version 8 Release 1 compiler is supported on Version 4.3.3, and higher levels of the AIX operating system.
The compiler, its generated object programs, and its run-time library run on all POWER, POWER2, POWER3, POWER4, and PowerPC(R) computer architectures provided all systems are running the required software and enough disk space and virtual storage are available.
The POWER3 or POWER4 processor is a type of PowerPC. In this book, any statement or reference to the PowerPC also applies to the POWER3 or POWER4 processor.
To take maximum advantage of different hardware configurations, the compiler provides a number of options for performance tuning based on the configuration of the machine used for executing an application.