CPU Usage with Vray GPU

[shane_mckenzie]

Hey - curious as to why when using Vray GPU with Optix de-noising that my cpu usage would be anywhere from 30 to55%? No post effects or sharpening in the VFB.

Is this expected? Doesn't happen in Redshift or Arnold GPU.

Thanks!

[zhanet.georgieva]

Hello shane_mckenzie,

When using V-Ray GPU, it is expected to see some CPU usage. This is because the CPU manages the overall rendering process and distributes the workload to the GPUs. Additionally, the more GPUs you have, the higher the CPU usage will be, as the CPU needs to coordinate the rendering tasks across all GPUs.

Could you please share the following so we can investigate further?

• Your computer specifications
• Screenshots or a video showing the CPU and GPU usage during rendering
• The scene file. Please use Save Project with Assets and share the archive here or submit it via our support system.