Why doesn't the iRay render use my GPUs?


https://forum.reallusion.com/Topic408759.aspx
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By Geoffrey James - 5 Years Ago
Adm ittedly, I've got plenty of CPU power (18 cores at 4GHz) but I would think that the renderer might make at least SOME use of the 2 Titan RTX hardware.

NOTE: the usage that IS shown on the GPUs is from the screen capture program. When that's not running both GPUs are clocking at 1-2%.

Or maybe the performance monitor isn't representing the situation correctly? Is there a switch somewhere I've missed? I'm flummoxed!

By 4u2ges - 5 Years Ago
The right counter to look at would be "Compute" counter, or better yet download GPUZ - very handy for monitoring Iray render.

https://forum.reallusion.com/uploads/images/88b88bce-db2f-4ffe-9a57-0d0d.jpg
By Geoffrey James - 5 Years Ago
Problem solved. GPUZ shows 99% GPU usage. The Microsoft-supplied monitor is--typically--not very well programmed. Sigh.

Thanks for your help.

GPUZ is really interesting. It even tells you the nanometers of the chips in the card. Kewl.