The XL Fortran Version 6 Release 1 compiler is supported on Version 4.1.0 and higher levels of the AIX operating system. Multiple threads are fully supported on AIX Version 4.2.1 and AIX Version 4.3.2.
The compiler, its generated object programs, and its run-time library run on all POWER, POWER2, and PowerPC computer architectures, as long as all systems are running the required software, and enough disk space and virtual storage are available.
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.