The InfoExplorer is a powerful Window-based information tool which allows the user to access some useful reference manuals for the SP2.
To get information specific to the parallel environment,
info -l pe &
The -l option allows one to look into a particular library available on the InfoExplorer. Other libraries may also be interesting to view. Two of these are the mpxlf and mpcc compiler libraries.
To get general information, type info &.
Again, the best way to learn this, or any other, X-based tool is to
actually get into the tool and use it.