i am experiencing high cpu loads when using rt gpu. i suppose its the chunks of data that are transferred to from the gpu. gpu monitor shows a more or less jagged line, not 100% all the time but way less. anyway i am using octane as well and there everything runs just as expected. is there a way …

High CPU load is something usual if the rendered scene is too heavy. The CPU in RT rendering is used to send the information to the GPU which is responsible of the actual rendering and its usage depends on the size of the project. If the CPU usage is near to its limits then some lower GPU utilizatio…

As Svetlozar mentioned, try increasing the Ray bundle size and/or the Rays per per pixel and see if it helps. 256/16 usually works well if your GPU can handle it. Best regards, Vlado

When I’m using RT GPU I’ve noticed that the CPU load for vray.exe hovers around the 30%. My Quadro 4000 only has 256 CUDA cores, if I add a more powerful GPU card like a Titan would the CPU load increase?

[image] Running V-Ray RT on a CPU and GPU with OpenCL When I’m using RT GPU I’ve noticed that the CPU load for vray.exe hovers around the 30%. My Quadro 4000 only has 256 CUDA cores, if I add a more powerful GPU card like a Titan would the CPU load increase? Nope; at least with the Titan that …

Thanks Vlado, that’s good to know.

On my gpu rig here, with 4 GTX680 the cpu load is between 40 and 80%, sometimes a bit more, but luckily, it never hits the 100%, which means that if it did, my cpu would bottle necking the gpu render, I guess… Stan

high cpu load

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vlado August 14, 2013, 4:39pm 5

Nope; at least with the Titan that I have here, the CPU usage is around 25-30%.

Best regards,
Vlado

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high cpu load

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