suppose there are 9 prims in the geometry. May I ask how to group them very 3 prims? I.e. group1 (prim 0-2), group2 (prim 3-5) …

Thanks!

advices are greatly appreciated!

Something like this?

Hi, ajz3d, thanks! May I ask how to display those fps and geometry information at the lower right corner of the scene view panel? can it be customized to display other information?

Anyway, will study your code later.

Thanks again!

You're welcome.

There are two options to display this information in Display Options->Guides->Additional Information.

or just use
Partition SOP with rule:
group_`floor($PR/3)`