Rick Lang
Forum Replies Created
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Richard, from the DaVinci Resolve manual:
OpenCL GPU support
grading images up to and including HD resolution.
5870 and ATI 5770 GPUs available with the MacPro.I’m sure your two RAID drives are sufficient but you can always “download the free version and try it” which should be an inexpensive, easy, and painless effort for you. If HD video is your maximum resolution, then you may be fine without adding the NVIDIA card.
Rick Lang
iMac 27” 2.8GHz i7 16GB
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[Rohit Gupta] “This GPU – “ATI Radeon HD 4850” is currently not supported. You should have got a warning at startup. There are several known OpenCL issues with the ATI 4xxx GPUs.
“Rohit, I have the same problem on the same machine. I understand the machine and card is not officially supported but others have Resolve running on their unsupported iMac systems. See my earlier thread about the “maxed iMac 2009.”
I called Apple and they said that I can have diagnostics run on the card as there may be a detectable problem and then they’ll replace the card. I have long ago applied the only AMD firmware update that Apple issued (in December 2009 I think). Could you kindly be more specific about the known issues as it relates to OpenCL and DaVinci Resolve? Thank you for your response.
Rick Lang
iMac 27” 2.8GHz i7 16GB
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[kim krause] “i got a warning the first time i launched to say my graphics card was not recommended…i ignored it and it worked fine…”
Kim, I see in a later thread about corrupt graphics, that Rohit Gupta says my ATI 4850 series cards in the late 2009 iMacs have issues with OpenCL – now that makes sense then and leaves me high and dry. Certainly was news to me, how disappointing that Apple hasn’t fixed this via firmware. I’ll check AMD’s site for an update. You must have a mid-2010 iMac if you have the i3 chip and I suspect you have the ATI Radeon 5670 GPU – wise choice!
Rick Lang
iMac 27” 2.8GHz i7 16GB
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[kim krause] “i got a warning the first time i launched to say my graphics card was not recommended…i ignored it and it worked fine…”
Kim, thanks for your comments. I completely reinstalled Snow Leopard 10.6.8 on an external drive, installed Resolve Lite there and had the same results! The sample video and my own test video (both H.264) do not display correctly and I keep receiving the error message “Error in GPU algorithm, probably exhausted memory…” which I now based on your results is not true (assuming you also have 512 MB of video memory on your graphics card in your iMac. I’m at a loss now as I’ve tried everything. I know the configuration manual recommends Snow Leopard 10.6.7 but surely it works under 10.6.8. I’ll give Blackmagic a call or e-mail them.
Rick Lang
iMac 27” 2.8GHz i7 16GB
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[kim krause] “i’m testing it on a 1 1/2 year old imac i3 imac and it works great with just 4 gig of ram……maybe try reinstalling….”
I uninstalled and reinstalled from the .dmg created yesterday. The uninstall didn’t remove the Resolve database since the reinstalled version came up with yesterday’s database. Any idea how to find and get rid of the database? Regardless, all behaviour was identical to yesterday. Still getting GPU algorithm failure. I tried adding a folder in Finder with my own clips (.mov files) and when I tried to add that folder to the media clips, it appeared to do nothing.
Kim, do you also get the NVIDIA pop-up telling you the NVIDIA driver needs upgrading? I can’t help but feel that’s related to my problem as I didn’t think it would look for NVIDIA on a system with ATI 4850. Do you get a warning when launching the application that an NVIDIA Radeon 4850 was detected?
I saw from your other post, that you are running on Snow Leopard 10.6 whereas I’m running on Lion. I wonder if that’s the problem?
Thanks for any response.
Rick Lang
iMac 27” 2.8GHz i7 16GB
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[kim krause] “i’m testing it on a 1 1/2 year old imac i3 imac and it works great with just 4 gig of ram……maybe try reinstalling….”
I uninstalled and reinstalled from the .dmg created yesterday. The uninstall didn’t remove the Resolve database since the reinstalled version came up with yesterday’s database. Any idea how to find and get rid of the database? Regardless, all behaviour was identical to yesterday. Still getting GPU algorithm failure. I tried adding a folder in Finder with my own clips (.mov files) and when I tried to add that folder to the media clips, it appeared to do nothing.
Kim, do you also get the NVIDIA pop-up telling you the NVIDIA driver needs upgrading? I can’t help but feel that’s related to my problem as I didn’t think it would look for NVIDIA on a system with ATI 4850. Do you get a warning when launching the application that an NVIDIA Radeon 4850 was detected?
Thanks for any response.
Rick Lang
iMac 27” 2.8GHz i7 16GB
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[Simon Ubsdell] “[Andy Mees] “Got to wonder how FCP X will pass timelines to Resolve 8”
You could always pass it back through iMovie – XML just about works there. 😉
“Simon, is this an option? Has anyone tried to use iMovie’11 XML export to import to DaVinci Resolve 8?
Rick Lang
iMac 27” 2.8GHz i7 16GB
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Canon 5D Mark II records stereo audio when an appropriate external mic is attached. The audio is 16-bit for left and right tracks. The internal mic is monaural and is likely 16 bit also. High-end auto and digital masters use 24 bit audio I understand, but most audio is 16 bit. 24 bit will generate 50% higher bandwidth so the files are larger but 16 bit should be fine.
Rick Lang
iMac 27” 2.8GHz i7 16GB
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Thanks, Timothy.
Rick Lang
iMac 27” 2.8GHz i7 16GB
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[Timothy Payton] “Right click on a movie in the finder and choose “Enclose Selected Video Files” and you’ll have options such as h264, and ProRes. “
I installed Lion but don’t see this option when I right-click on movie files. Could you post a screenshot of the pop-up? Thanks.
Rick Lang
iMac 27” 2.8GHz i7 16GB