Share Light Cache tool
Share Light Cache tool is made to speedup network rendering on slaves via the VraySpawner.
How it works
Very often the faster PC is the main one, and slower PCs are used as render slaves.
As you probably know, when you make a distributed render of a still image, each PC calculates exactly the same lightcache.
This lightcache calculation takes some time, and usually the main PC has finished before the slaves.
While the main PC is computing the next pass (irradiance map for example), slaves are still computing their own useless lightcache...
When they're done, they finally start the next pass.
Share Light Cache tool avoids this useless computation of the light cache by slaves, by doing the following :
With this fully automated process, distributed rendering is now optimised and slaves are more efficient, leading to shorter render times.