Activity › Forums › DaVinci Resolve › HP Z820, Quadro K4000+GTX 670, poor realtime performance
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HP Z820, Quadro K4000+GTX 670, poor realtime performance
Jakob Woodruff replied 11 years, 5 months ago 5 Members · 23 Replies
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Glenn Sakatch
March 16, 2015 at 2:20 pmTimo, they might all be 16x slots, but those slots have rules regarding that functionality, depending on how other slots are being used. I’m pretty sure that at least one of those slots drops to 8x if another one is being used at 16 x. Perhaps try the blackmagic config, without the other cards in place and see if that helps.
(I’m assuming you have dual CPU’s?)
Also, which of your cards is hooked up to the monitor?
Glenn
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Timo Teravainen
March 16, 2015 at 4:36 pmOk so it looks like there are lots of things to try out. I’m running with Geforce drivers for both cards now, as several people have said it’s problematic to run two different sets of drivers, but I will try to install separate drivers for each card. And it could be worth trying with the Quadro driver as the only driver.
I’ll also try the Blackmagic card slot configuration and see if that changes things.
Glenn, the monitors are connected to the Quadro card, and the GTX card is not connected to anything else than PCIe lane. And yes it’s a dual Xeon configuration.
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Jakob Woodruff
March 16, 2015 at 7:12 pmI wanted to add, I mean nothing against anyone who uses Geforce drivers! I’ve used them plenty! I just wanted to mention going the other direction in a professional workstation might be a better option.
~Jakob
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Timo Teravainen
March 17, 2015 at 6:01 pmToday I installed the GTX 970 with the Quadro K4000. Installed the Quadro driver, after which the GTX card didn’t work. Installed the GeForce driver from Device Manager (update driver), didn’t use the driver install wizard. Everything worked fine in Resolve and performance was very good.
The problems came when starting Avid, part of the displays were missing, only timeline and bins visible. Looking at the nVidia Control Panel and Device Manager, it also looked like the Quadro driver had been overwritten by the Geforce driver. The only way to get Avid working properly was to uninstall Geforce driver and re-install the Quadro driver, and detach the GTX card.
Any ideas on how to get Avid+Resolve working with this kind of setup? Or is it half an hour of installing procedure every time when swithing between applications?
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Jakob Woodruff
March 18, 2015 at 1:56 amFrom what I can tell, you should be able to accomplish what your trying to do but it takes a little bit of doing. I’ve done something similar in the past. It might sound strange but you basically have to trick the Quadro drivers into working on a Geforce card since by default that is disabled by nVidia (that way you are forced to buy an equivalent Quadro instead, etc etc). You basically have to replace the information file (.inf) that comes with the Quadro drivers with one that allows you to install those drivers on Geforce cards as well.
What version of the Quadro drivers are you using? If your using 341.21, I can give you the required file right here: Modified Quadro Driver INF
Basically once you have the above file downloaded, you’ll need to copy the downloaded file, then find the extracted driver files on your computer. Typically when the nVidia drivers are extracted, they go to “C:\NVIDIA\DisplayDriver\341.21\Win8_WinVista_Win7_64\International\Display.Driver” or something similar to that. It may be different for you but the main thing is, you need to make it into the Display.Driver folder. Once you are in that folder, paste the downloaded file. It will ask you to place the original. You’ll want to choose yes (overwrite). If it doesn’t ask you to overwrite, then you’ll need to check and make sure your in the right folder.
After that you should be set. Just reinstall the Quadro drivers for both cards (the K4000 and the 970) by running the setup.exe in the International folder, then reboot. You won’t want to run the original nVidia file you downloaded as that will overwrite the modified .inf. You’ll want to make sure the Geforce drivers are completely uninstalled before installing the modified Quadro drivers also.
I should also mention, that file I gave you will only work with version 341.21. I’m sorry that’s a little bit older and you may have to download it from nVidia’s archives but it’s only only version I found really quickly that should be stable. Unfortunately I wasn’t able to test it yet either as I’m currently on an EliteBook (in the process of moving so don’t have access to the workstations right now) but it should work just fine.
Hope that helps! If not, let me know, we can try something else.
~Jakob
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Jakob Woodruff
March 18, 2015 at 2:07 amI just want to clarify (I also modified my previous post to reflect this), once you have overwritten the .inf, you’ll want to run the setup.exe in the International folder. You’ll not want to run the original setup that you downloaded (usually something like this “341.21-quadro-desktop-win8-win7-64bit-international-whql.exe” or something similar) or otherwise it will overwrite the modified inf while extracting again from scratch.
~Jakob
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Timo Teravainen
March 18, 2015 at 3:55 pmOk thanks, that sounds like worth trying out. The quadro driver version is 340.84 at the moment, so it’s even older than the one you suggested. I’ll have to check if Avid works ok with the 341 driver.. it seems to be really picky with the drivers. The Z820 is being used almost 24/7 so it will take some time before I’ll get the chance to test out.
The question that comes up for me is wether or not these older quadro drivers are using the full potential of new 970 gtx card.. but I guess we’ll just have to see about it.
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Jakob Woodruff
March 19, 2015 at 1:40 amNo problem!
Hopefully it works for you. I’m sorry, I completely forgot about Avid compatibility or I would have checked on that. I haven’t been using Avid lately so it slipped my mind.
The 341.21 driver is not that old (I believe 347 is the current version) so hopefully it will work but if it doesn’t appear to be, I found some newer modified drivers. The guy’s over at forums.guru3d.com keep up on it pretty well. Here are the forum threads and modified files for the newer versions:
Nvidia Quadro/Grid 344.11:
I’m not entirely sure if this one is Avid compatible as I can’t seem to find any info on this version in particular. That may mean it works just fine :-).
Nvidia Quadro/Grid 344.11 WHQL + inf modded for all geforces
Modified 344.11 INF Download (from the forum thread)
Nvidia Quadro/Grid 347.52:
One guy had trouble with this version it seems but I think he may have worked it out, it’s unclear. Here is the thread. As another guy on that thread mentions, the PC Geforce drivers don’t seem to have full OpenGL hardware support. This is one reason I like to go this route. I think it basically solves that problem. Just my opinion though!
Nvidia Quadro/Grid 347.52 whql + inf modded for geforces
Modified 347.52 INF Download (from the forum thread)
Hope that helps!
~Jakob
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Timo Teravainen
March 19, 2015 at 10:18 amSome people are reporting the 341.21 driver is working fine with Avid, so I’ll give it a try first. Thank you so much for finding this all out!
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