Vray for rhino 78/24/2023 More info about the nature of Hybrid rendering is available at the blog post Understanding V-Ray Hybrid rendering. The hybrid render engine running on a CPU supports the same features as the regular V-Ray GPU CUDA engine. Meaning, this mode can be used on computers that don't even have GPUs. Furthermore, you can use the CPU as a CUDA device even if you don't have an NVIDIA GPU and/or NVIDIA drivers installed. The hybrid rendering mode does not require any special drivers. To enable the hybrid rendering mode, simply enable the C++/CPU device from the list of CUDA devices. V-Ray can now execute the CUDA source on the CPU, as though the CPU was another CUDA device. Starting in 3.60, V-Ray GPU can perform hybrid rendering with the CUDA engine utilizing both the CPU and NVIDIA GPUs. Hybrid Rendering with CPUs and the CUDA Engine If you see your CPU listed twice, choose the option with "C++/CPU " in the name. When choosing the devices from the Asset Editor - it is done only for the current session in Rhino. ![]() If the Standalone DR server is running as a service, you may need to restart it. After changing this option, you need to restart SketchUp and/or any Standalone DR servers (if any are running) for the changes to take effect. When selecting devices from the standalone tool, that will set the default setup for the work station. There are two ways to do this: by using the supplied standalone device selection tool, accessible from both the V-Ray Tools menu and the Start menu search, or from the Asset Editor's GPU device dropdown list. You may not want to use all available GPU devices for rendering, especially if you have multiple GPUs and you want to leave one of them free for working on the user interface or you may want to combine your CPU and GPU together (see the Hybrid Rendering section below). Choosing Which Devices to Use for Rendering The RTX engine type only works with NVidia RTX cards. To see if the V-Ray render server is really rendering on the GPU, check out its console output. If V-Ray GPU cannot find a supported RTX device on the system, the process stops. If V-Ray GPU cannot find a supported CUDA device on the system, it silently falls back to CPU code. See the sections below to learn how to choose devices on which to run IR GPU. Rendering on multiple GPUs is supported, and by default, Interactive rendering for GPU uses all available GPU devices. Using the Select Devices for V-Ray GPU Rendering you can enable your CPUs as CUDA devices and allow the CUDA code to combine your CPUs and GPUs to utilize all available resources.
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