Laptop and 1 GPU performance…

[Margus Voll]

I would say that imac is even a bit worse than mac book pro as it has one gpu.

At least my test with i5 mbp with 2 gpu’s compared to 1 gpu core 2 duo imac i see results from mbp.
OK io wil be slow either case but one manages to play faster fps on the same material.

So my conclusion would be 2 gpu’s and more general cpu power and we will have fun.
Exactly as BM have specified details for really good reason.

—

Margus

https://iconstudios.eu

[Walter Biscardi]

With just a couple of nodes we’re getting realtime performance on our Mac Pro no problem. Even with a lot of nodes, not noticing any serious drop in performance.

Actually quite impressed with just a single GPU configuration. I’ve got multiple blog entries with the Mac Pro configuration we’re testing along with some workflow comparisons to Apple Color.

https://blogs.creativecow.net/blog/3355/davinci-resolve-testing-configuration

Walter Biscardi, Jr.
Editor, Colorist, Director, Writer, Consultant, Author, Chef.
HD Post and Production
Biscardi Creative Media

“Foul Water, Fiery Serpent” featuring Sigourney Weaver coming soon.

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[Dwaine Maggart]

I’ll comment that after reading Walter’s blog, I performed a similar test on our test system here. I removed the GT-120 card, and connected a display to one of the GTX-285 DVI ports. There is a pretty significant performance hit if you use things like Power Curve windows and Blur.

I built a 10 node correction before removing the GT-120 that had some primary and secondary corrections, a full blur, a circular power window, a Power Curve window and some rotation. This was with 2K DPX files, working in HD resolution. Solid 24 FPS playback. Probably could have added more nodes with no problem.

After pulling the GT-120, same correction played back at 18FPS. Experimentally found that the blur and the Power Curve windows causing most of the slow down. Getting rid of both of those, the rest of the corrections played back OK at 24FPS.

The good news about all this is: If you enabled the real time half res Proxy mode, you seem to get all that performance back. The original 10 node correction played back fine at 24FPS with Proxy mode enabled. So if you don’t mind the video output having some loss of resolution (only while grading, this would have no effect on the rendered files) this seems like an OK method of working on a low performance system.

Still, if you follow the BMD Mac Config guide, you will have plenty of normal performance, and save the Proxy mode solution for those really tricky 20 node corrections. 🙂

Dwaine Maggart
Blackmagic Design DaVinci Support

[Illya Laney]

What kind of footage are you working with? Are you using the soft scopes or outboard scopes?

twitter.com/illyalaney
Motion Design, Color, Editing
SWGC Incorporated

[Dwaine Maggart]

Are you asking me about footage? Or Walter?

I’m using 2K DPX clips. And I’m using the Resolve scopes on a second display connected to the DVI connector of the GT-120 card.

Dwaine Maggart
Blackmagic Design DaVinci Support

[Illya Laney]

Sorry, I should have been clearer. I was asking Walter.

twitter.com/illyalaney
Motion Design, Color, Editing
SWGC Incorporated