The -qarch and -qtune compiler options control the code generated by the compiler. These compiler options adjust the instructions, scheduling, and other optimizations to give the best performance for a specified target processor or range of processors.
- -qtune=balanced
The -qtune=balanced suboption is new for this release, and becomes the default -qtune setting when certain -qarch settings are specified. Using -qtune=balanced instructs the compiler to tune generated code for optimal performance across a range of recent processor architectures, including POWER6™.