Hi Marc,
when I started dt two years ago for the first time on my new
iMac-5k-screen, in full screen as I had been used to on my former HD
screen, I was shocked by the slow performance. My first idea was to
blame Apple. But when I did realize that full screen even extended the
pixel size of my pictures I changed the mode of my operation. I reduced
both the dt window and my distance from the screen, put my reading
glasses on and eventually got a decent dt performance.
The point is that you shouldn't so much pay your attention to higher
resolution but to more free screen space. What's the use of a 5k screen
when you remove yourself from it so that it looks the same as a HD
screen? We don't talk of UHD movies, do we.
All the best
Volker
Am 22.11.20 um 16:04 schrieb Marc Cabuy:
Hi Volker,
Further to that opencl issue, that slow response time you had/have may be
related to the high resolution display. That's my experience with dt 3.2.1 on
Windows. I now reduce my display resolution prior to editing (feels stupid, I
know). See also here:
https://www.mail-archive.com/[email protected]/msg10305.html.
I would be interested to hear whether that is an issue too on MAC.
Marc.
-----Oorspronkelijk bericht-----
Van: Volker Lenhardt [mailto:[email protected]]
Verzonden: zondag 22 november 2020 12:26
Aan: [email protected]
Onderwerp: [darktable-user] No Opencl on macOS 11 (Big Sur)
After upgrading to macOS 11 (Big Sur) I experience very long response behavior
of DT on my 5K screen (iMac 2017), about at least double compared to the
already slow performance under macOS Catalina.
Especially denoising is nerve-racking.
I see that OpenCL isn't supported any more. There is Metal instead. Is there a
way out to sufferable working conditions?
Stay healthy
Volker
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