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Unfortunately, this does not run on Mac OSX, the GPU side of XPU only supports NVIDIA graphics cards on Linux and Windows. Users must have a Maxwell class card or above and be using a recent driver. Given the memory constraints, one is best to use an NVIDIA card with as much memory as possible. Unofficially, a sensible-sized GPU for XPU in production would be a 24gigabtye card.Īrtists and TDs can shade objects in the context of their scenes, get approval, and send to RenderMan RIS for a perceptually identical final frame. Physically-based materials aid accurate lighting, especially in combination with the new Color Management support for ACES in look development workflows. Why GPU now?ĭavid Laur, Director of Product Management, believes there are several reasons why only now has RenderMan made the move to release the XPU and embrace the GPU. He cites firstly what he characterizes as a change in the programming landscape. “The general programmability of the GPU has come so far, the general CUDA environment makes all the difference in my opinion. And it really does let us do a lot more general-purpose things with the hardware than we ever could before.” The RenderMan team has traditionally been able to innovate much faster on the CPU side of the equation due to just the programming environment.
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The XPU is not just a GPU version of the CPU, it is an integrated hybrid CPU + GPU rendering engine. As such Pixar wants a general-purpose solution and one that addresses the needs of its users. Memory has traditionally been a gating factor for RenderMan. “For years it was that the scene wouldn’t fit in memory. RENDERED WITH RENDERMAN LOGO PROFESSIONALĪnd not only that, the production shaders at Pixar work thousands and thousands of lines long.