Mental Ray Free Downloads – Links

Hi all,

after decades of supporting the rendering community worldwide, the NVIDIA ARC Forum will go out of service, unfortunately, including all of its mental ray sections. That does not mean its vast valuable content is lost, but we will stop hosting it on the original website location.

For those of you who are searching for the download links of the free Mental Ray software, which we did publish in the forum as well, here you are. We include a copy of the text of the original announcement followed by all the links to the pieces of software.

Happy rendering!


The version 1.2 update of the NVIDIA Mental Ray for Maya and NVIDIA Mental Ray for 3ds Max plugins, and the corresponding Mental Ray Standalone distributions are based on the latest major mental ray version 3.14.5.

This software update introduces support for NVIDIA’s Volta GPU generation, and is based on CUDA 9. It will continue to work with the older GPU generations Pascal, Maxwell, and Kepler. The update also fixes a lot of known issues, and improves rendering performance especially for GI Next. Note, the plugin works in Maya 2018.5 dot release too.

Please note, the plugins are free to use for interactive rendering and rendering of still frames from within Maya or 3ds Max. The rendering of animations with Maya Batch, Backburner or Mental Ray Standalone will ask for a license though.

NVIDIA Mental Ray for Maya Plugin

Windows
Linux
macOS

NVIDIA Mental Ray for Maya Standalone

Windows
Linux
macOS

NVIDIA Mental Ray for 3ds Max

7 thoughts on “Mental Ray Free Downloads – Links

  1. Sarfaraz Yeaseen says:

    “pluginWin.mel line 290: The specified procedure could not be found.”

    every time I try to load the plugin, this message shows up. Any way to solve this problem? Happened for both 2016 and 2018 version of maya.

    1. Steffen says:

      We have seen similar problems when the software environment was customized a lot, so that mental ray or Maya were forced to search in non-default locations for its components like the „libray“ core library. Does it work when you load the plug-in manually, by using „browse“ in the plugin manager?

  2. I started getting these errors from iRay, the scene is really simple with 600 polys and no textures apart from a small hdri environment and it really shouldn’t be trying to allocate a gigabyte of memory. Yesterday I updated the gpu driver to the newest version (456.38), could it be the cause? Is there anything that can be done?
    IRAY 0.135 416 MB error: CUDA device 0: OptiX Prime error (Device rtpModelCreate TL): Unknown error (Function “_rtpModelCreate” caught exception: Encountered a CUDA error: cudaEventCreateWithFlags(&m_eventBegin, cudaEventDisableTiming) returned (77): an illegal memory access was encountered, [197066884])
    IRAY 0.135 416 MB error: error on device 0, cannot use this device for rendering
    IRAY 0.71 416 MB error: CUDA device 0 (GeForce RTX 2080 SUPER): an illegal memory access was encountered (while allocating memory)
    IRAY 0.71 416 MB error: CUDA device 0 (GeForce RTX 2080 SUPER): Failed to allocate 1.02745 GiB

    1. Steffen says:

      Hi, I guess this about the “iray” render mode in mental ray? You may send the report to mentalray-support(at)nvidia.com for help. Please keep in mind that mental ray development has stopped years ago, and the iray render mode was verified on the GPU models, CUDA version and drivers of its time.

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