The update also introduces support for NVLink: Nvidia’s proprietary technology for high-speed communication between GPU and CPU, or between GPUs. But our CUDA version is much more robust.” Updated: We’ve spoken to Chaos Group, who point out that “technically speaking, our OpenCL code already had hybrid capabilities, since it can run on GPU and CPU. Moreover, neither implementation supports all of the features of V-Ray’s final-quality production renderer, and Chaos Group’s blog post is at pains to point out that the two engines will remain separate in future.Īnd, obviously, since V-Ray Hybrid is based on CUDA code, it will only work with Nvidia GPUs: if you’re using an AMD card, you’ll need to stick with the OpenCL version of V-Ray RT GPU as normal. While Chaos Group has been steadily expanding the feature set, V-Ray RT GPU doesn’t yet support all of the features of V-Ray CPU, the CPU-only implementation of the engine. While anything that can be rendered using V-Ray RT GPU will now render faster – and if the benchmarks are representative, significantly faster – that doesn’t mean you can render everything faster. However, the new technology is more of an incremental improvement in GPU rendering than a complete step change. This enables V-Ray RT GPU to co-opt all the compatible processor cores in a workstation, speeding up renders: in Chaos Group’s benchmark tests, by around 10-20% over rendering on the GPU alone.Īnd that’s on a machine with two Quadro GP100 GPUs – the most powerful Nvidia workstation graphics card available – but much older Intel Xeon E5-2687W v3 CPUs: still powerful, but not the current top of the range.įaster, but still not as fully featured as CPU rendering
The technology enables the CUDA code used by V-Ray RT GPU, V-Ray’s interactive renderer, to run on the CPU as well as the GPU, with identical results.
The big change in V-Ray 3.6 is V-Ray Hybrid: an interesting new CPU/GPU-based rendering system. V-Ray Hybrid runs V-Ray RT CUDA code on both GPU and CPU The update also adds support for Nvidia’s NVLink technology, which enables V-Ray to pool GPU memory across separate graphics cards, plus support for automated ID matte-generation system Cryptomatte. Chaos Group has released V-Ray 3.6 for 3ds Max, the latest update to its production renderer, adding support for V-Ray Hybrid, its new hybrid CPU/GPU-based rendering system.
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