Titan-X in Netstor GPU-expander not detected

[Mike Most]

I checked the system again because I wasn’t completely sure it was a 120 that we put back in and I was right. It was a Mac specific Quadro 4000. So we’re running with essentially the same setup that Sasha has, a Quadro 4000 Mac Edition in slot 1 inside the tower running the GUI, and 2 Titan Blacks in a Cubix expander. Both Titans are seen and used by Resolve, and when we need to put in a Red Rocket X (we have one on this show just in case) we remove one of the Titans.

Sorry for the confusion. What I recall now is that we originally went with a Titan Black as the GUI card, and then pulled that and put the ATI in to make sure we could see both Titans in the expander. We had some playback issues with the ATI in place, so we tried putting the Quadro 4000 in and that solved it. BTW, all of this started because we originally set up a system using a 12 core “trashcan” Mac Pro, but had rendering issues (widely reported by others as well) with Resolve. Those issues disappeared when we went back to the older tower.

[Roman Stricker]

I just tried the same thing: Pulled out the ATI again and put back in the K5000. Since the temporary presence of the ATI in your system, Mike, seems to have triggered something, I was hoping for some extra power from the K5000 for my system as well. But no, i wouldn’t work. Again only one Titan-X is beeing detected while the other one shows up as “display” in the system settings and one can see that it doesn’t contribute any GPU power to Resolve.
Now I wonder: There are two system here in this forum running on at least two Nvidia GTX-something and a Quadro K4000 for Mac and there is my system refusing to run on two GTX Titan-X and a Quadro K5000 for Mac. All of us are on a 12 core Mac 5.1 with Yosemite. Now where the heck is the difference between our systems that lets you guys succeed and me not?!?

[Roman Stricker]

Still I didn’t make my peace with the situation as it is. I was following up the thought of beefing up my AMD GUI card to use its bigger processing power also for computing in Resolve. But reading other threads made me believe that this is not possible since Resolve will not accept a brand mix for computing. Anyone any experiences with that?

[Regis Frossard]

Hi guys,

Just an update, with a Cubix (same as Nestor I presume)
This is what I have tested so far:

I updated my Mac Pro 5,1 to Yosemite 10.10.3 with the latest Cuda and Nvidia drivers.
Primary card GTX 770 4GB –> no problem
In Cubix, 4xGTX Titan 6GB –> only 2 are recognised by the system

Cheers
Regis

[ST Jang]

Is this Correct in Yosemite, 10.10.5, with MacPro 5,1?
Not sure can add one more GPU….
Somebody?