To install OctaneRender® on Windows®, ensure that you have installed a suitable driver for your video card. After this, you only have to run the installer.
OctaneRender® v4 is a CUDA 9.1 application. It will require a current NVIDIA graphics driver of version 388.x or higher.
The latest video card drivers for Windows and Linux can be downloaded from http://www.nvidia.com/Download/index.aspx
The minimum supported version of the Mac operating system is 10.11.x.
CUDA driver 9.1 or higher is required for CUDA support on the following:
For a complete list of Mac-compatible CUDA drivers, please refer and download from http://www.nvidia.com/object/mac-driver-archive.html.
NVIDIA CuDNN is required to run OctaneRender V4. Download the cuDNN library file from https://render.otoy.com/downloads/1c/42/12/04/cudnn64_7.dll
The library file should be placed in the either of these folders:
C:\Users\[user]\AppData\Local\OctaneRender\thirdparty\cudnn_7_0_5\
or
C:\Program Files\OTOY\[OctaneRender 4.x]\