For right now, I would say get a ProRes444 back from your Colorist and call that your “master” file from which to make MXF, Blu-Ray, and tape formats for the networks.
There are less compressed codecs than ProRes Quattro (as the kids call it), such as Kona or even Uncompressed, but none of them will play on most Mac Pro edit machines (due to hard drive speed as much as processor speed), so it’ll be very hard to QC (Quality Control) the grade.
After all, you’ll want to watch the project in realtime after it’s delivered to make sure it all came out okay.
In the meantime, regarding your “whats the coda” question, did you mean codec or CUDA?
Cuda is technology by NVIDIA that makes GPU accelerated processing easier; it’s the tech that was required for Resolve 7 and allowed Resolve on a mac to begin with. However, due to OpenCL (we think) Resolve 8 won’t require CUDA enabled NVIDIA cards and wll run on ATI as well.
If it was Codec, there is no native Codec for Da Vinci Resolve; it’ll read and write anything your Mac can read or write.
Also, I agree with everyone else; grade first, noise reduction later. The only exception might be something like a telecine suite where you have footage coming directly from a TK that you want to pipe through a hardware NR box before heading into your color corrector, but other than that, always grade first.
good luck,
Charles
Charles Haine
Colorist, Professor
ColorCorrection.Com