Two different GPUs

Currently I am using Two GPUs(1. Tesla K20c and GeForece GT 610) devices on a Centos 6.5 workstation. I want to disable GeForce GT 610 driver so I can use python script using pynvml to get all metrics of Tesla K20c device. this gives errors because GeForce GT 610 does not support all the available functions.

would be nice if somebody can suggest how to avoid Geforce GT 610 without removing it phisically.

Kind Regards