IRay manager is a toolset to setup Iray renderer with Mental Ray Material Editor (the Iray Material Editor is too slow to update!!). The script let you choose CPU or GPU only render and let you adjust the number of GPU and CPU cores to use for rendering.
> download the maxscript (V1.2)
> v1.4 (Artur Leao) Artur enhance the script day after day :)
UPDATE!! Artur Leao completly rewrote my script and enhance is stability and functionalities!