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CAD tip CAD tip # 8529:

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Q - question

How to use CUDA GPU to accelerate rendering in 3ds Max?

A - answer Autodesk 3ds Max version 2011, 2012 and higher can use graphic processors on 3D accelerated graphics cards (GPU) for faster renderings of your 3D scenes. This process use the Mental Ray technology - iRay.

Compared to the standard, software-only computing (CPU-based), this rendering is multiple-times faster (e.g. TESLA GPU will be about 6x faster than a modern quad-core CPU). The number of CUDA cores contributes to the computation speed in a linear way (128 cores will be 16x faster than 8 cores). For iRay you can use GPU on the nVidia GeForce, Quadro and Tesla graphic cards. To maximize the rendering performance, set your nVidia driver to SLI and ECC values "Off", and the parameter PhysX to "CPU". If you have a single graphic card in your workstation, response of your interactive rendered scene-viewports will be substantially slower during iRay rendering.

The iRay renderer uses all available GPUs in your PC (and also all CPUs). If you want to limit the usage of GPU units, use e.g. the application iRay Manager [URL verified 3/2012].

In the rendering settings (F10), on the Common tab (Assign Renderer), set "iray Renderer" as the production renderer, and optionally adjust its parameters (the Renderer tab). For lights and environment use the Mental Ray (mr) versions.

iRay can be used also for animation rendering and network rendering.

100% *  CAD 
19.3.2012    59849x  
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applies to: 3ds Max 2012 · 3ds Max 2011 ·

See also:
Tip 7018:Trees are not rendered in my Revit project.
Tip 5516:Missing 3DSOUT command in AutoCAD 2009/2008/2007.
Tip 5205:Which Autodesk products use the Mental Ray technology?
Tip 4905:Using multiprocessing in AutoCAD.
Tip 1158:How to use Mental Ray renderer v1.x with 3ds max 4?

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