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Titan-X in Netstor GPU-expander not detected
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Well, i have three GTX in the Cubix and a Q4000 as system card.
Under 10.9.5 I could access all three, with 10.10.4 only two of them.
Perfect downgrade, thanks Tim.Resolve 11.3 – Smoke 2015 EXT1 – Sapphire 8
Colorist / VFX Guru / Aerial footage nerd
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And how did installing those GTX work for you, Sascha? Was it more or less plug & play or did you do anything special as to drivers and so? Do you have any idea what my system profiler’s message of “no kext loaded” points to?
THANX! -
I can confirm this issue as Joe does with Cubix – its a 2 card Nvidia issue. If your GUI card is an AMD card you’ll be able to address both the Titan X cards you have in the expander.
I have 2 rooms with same setup you’re using -Titan Xs 10.10.3
Apple is indeed trying to screw Nvidia users in my opinion. But they’re also saying no no no you don’t need multiple GPUs!
Robbie Carman
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Colorist and Author
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Mixing Light Powered By The Tao Of Color -
Be sure that’s the first thing I’ll check tomorrow morning!
Still: It’s confusing that Sascha has a working 3-nvidia-card-setup. Somehow this whole topic seem to contain some inconsistency… -
No, actually Sascha is reporting the same issue — that he could see three under OS 10.9 but only a maximum of two under 10.10.
This is a chicken-and-egg problem with the more advanced nVidia cards (especially un-flashed non-native Mac-approved hardware). We could run several cards up to and including Mountain LIon, but they had to be Mac-compatible — I had three flashed GTXs plus a Q4000 running in one system under Mountain Lion, but wanted to jump up to the Titans for many more CUDA cores — but, you have to move forward into Mavericks/Yosemite for the system to see them, but Apple in their non-finite wisdom cut the maximum number of recognized processors to a maximum of two of those type.
Its still worth doing, but the MacPro chassis itself has to be at least a 5,1. This tiot never ends.
jPo
“I always pass on free advice — its never of any use to me” Oscar Wilde.
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Well, i am also royally confused as i am intact using three nvidia cards.
But maybe they are talking about GPUs ?
Or does the Titan count for two ?
Resolve 11.3 – Smoke 2015 EXT1 – Sapphire 8
Colorist / VFX Guru / Aerial footage nerd
https://vimeo.com/saschahaber
https://dk.linkedin.com/in/saschahaber -
[Sascha Haber] “But maybe they are talking about GPUs ? “
Are they “flashed” Mac-compatible or Apple-approved versions? Maybe that is the difference. Most users don’t want to go through the process when the non-Apples can be added directly under later OS versions — albeit with the total number being limited.
jPo
“I always pass on free advice — its never of any use to me” Oscar Wilde.
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Hi Sasha, that screenshot of yours is interesting. Because one of your GTX is also recognized as “Display”. When you click on „Display“, doesn’t it say “no kext loaded”? This it what I had been seeing here, when one of my Titan-X wasn’t recognized. I mean, are you really sure, you are using the power of all three GTX? Does realtime-playback in Resolve get any slower, when you remove one GTX from the cubix?
Anyways, I had a pleasant surprise this morning: changing the K5000 to the ATI made both of my Titan-X now show up in the system profiler. And in Resolve I can see that it’s really doing it’s work. The realtime playback speed on my RED reference clip with tons of nodes and mattes would increase from 7,5 to 15fps. So it’s really there!
Coming back to Joes latest post, I think we have two issues here – as far as I understand the matter:
A) Apple decreased the number of externaly usable GPU with the introduction of Mavericks down to just two, no matter what manufacturer the cards come from. (again waiting for Sascha to proof me wrong on this point)
B) Nvidia cards that are not MAC-specific like the GTX series do have some sort of problem. Though both of us are on a Mac 5.1 with Yosemite Sascha’s system recognizes at least two if not three external GTX plus a GUI card from Nvidia whereas my system would only let my use the two Titan-X with an ATI in place for GUI. Of course I also put in my newly unemployed Quadro K5000 into the Netstor expander. Result: The Mac wouldn’t boot, the screen remained black…
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>Anyways, I had a pleasant surprise this morning: changing the K5000 to the ATI made both of my Titan-X >now show up in the system profiler. And in Resolve I can see that it’s really doing it’s work. The realtime >playback speed on my RED reference clip with tons of nodes and mattes would increase from 7,5 to 15fps. >So it’s really there!
I’m not surprised. That’s why I suggested it. We’ve already gone through this. The reason I asked about a Red Rocket X is because the system considers that to be a GPU, so it will not work in a configuration like yours (ours was nearly identical) without removing one of the Titan Blacks. We ultimately were able to swap out the ATI card for a GT 120, which the system would allow while see seeing the Titan Blacks in the expander. So if you want to be “all Nvidia” and have access to that card you might want to try that.
Glad you got it working. Sorry you have the same problem many of us now have……
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Thanks, Mike! But if you were able to replace your ATI GUI card with a GT 120 it is obviously sometimes possible to get a set-up with three Nvidias working – but then again sometimes not. Would be great to know for which Nvidia cards this is true…
But I am not a Nvidia fanatic so I actaully don’t care if there is an ATI or Nvidia card responsible for displaying my GUI – or should I? But what I do care about is getting the most out of my system. I could measure that with the Quadro K5000 installed for GUI and the “use display GPU for compute”-option activated it would give me an additional power of about one third of a single Titan-X. Now with the ATI Radeon HD7550 in place I don’t get any extra power from that card at all. It doesn’t effect the playback speed wether the “use display GPU for compute”-option is activated or not. Does anyone have a recommendation which card to use (not going above the 1.000 Euro line)?
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