Weird glitches with NR – strange shapes - DaVinci Resolve

DaVinci Resolve

Weird glitches with NR – strange shapes

Posted by Toby Tomkins on August 9, 2011 at 7:45 pm

Hi all,

I’m running Resolve v8.01 on a hackintosh with the following spec/drivers;

GA-EX58-UD5 mobo
Intel i7 920 @ 3.8GHz
6GB XMS3 RAM
GTX 480 for GPU – Nvidia Driver 256.01.00f03}
GTX 285 for GUI – Nvidia Driver 256.01.00f03} ‘enabled’ via strings in boot.plist
Decklink HD Extreme 3D
Tangent Wave
2x 24″ monitors for GUI (both fed via DVI)
OS X 10.6.7
CUDA driver 4.0.21

As you can see from this post: https://forums.creativecow.net/thread/277/7454 I get great playback performance with the 480. HOWEVER… I’m getting glitches with NR and other fx (crashes on stabilisation …but oddly not tracking)

The ‘glitches’ I refer to are weird shapes of different colours and shapes in the viewer and sometimes causes Resolve to crash. Please see the attached image for reference: https://f1.creativecow.net/file/2763/2763_screenshot20110809at20.28.06.png.zip The higher resolution the source/timeline, the smaller the weird shapes.

I’m using the following in the Debug tab of the preferences;

LsManager.3.NumGPUs = 1
LsManager.3.GPUMapping = 0
LsManager.3.GPUMappingEnable = 1
System.Record.Lookahead = 5

This gets me the best performance (with just grading nodes) but when I want to use NR it has these strange glitches and sometimes crashes, even on render.

Has anyone got any ideas? It seems like an issue with the GPU, maybe the Debug entry or the drivers??

I should also note that this is a legitimate copy of Resolve and I am using the dongle and it is securely plugged in and showing an orange/red light.

Thanks in advance for any help!

Toby

Rohit Gupta replied 14 years, 9 months ago 3 Members · 3 Replies
3 Replies

Toby Tomkins
August 10, 2011 at 5:10 pm

Anyone?
Margus Voll
August 12, 2011 at 5:19 am

Probably others do not have this problem. Does it look like this after a restart ?

—

Margus

https://iconstudios.eu
Rohit Gupta
August 12, 2011 at 6:03 am

Definitely remove these from your Preferences:

LsManager.3.NumGPUs = 1
LsManager.3.GPUMapping = 0
LsManager.3.GPUMappingEnable = 1
System.Record.Lookahead = 5

These should not be required.

Of course, it’s impossible for us to say if the Hackintosh is causing the issue as we don’t test it or even support the GTX4xx cards on Mac.

Do you have a Mac Pro to test to see if you have a similar issue?

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Weird glitches with NR – strange shapes