Hi
It might be that the GPU columns are not visible in your rrControl layout.
Please right-click on the table header (Screenshot left side)
Then there is a setting for the required GPU memory of a job. (See Screenshot right side)

If you want to know how much GPU memory was used during the render, then please take a look at the bottom of a render log file:

IMPORTANT NOTE:
RR can not measure the memory usage per application.
It is the total amount used at that time.
So if an artist was logged in at the same time as the render happened, it is probably higher.
regards,
Holger Schönberger
Please use the rrKnights Tavern
or our support system for new questions.