Tuvok wrote:jknights wrote:ogrizzo wrote:I tried the new beta on my iMac (i7 at 2.8 GHz, Radeon 4850, OSX 10.8.2):
There was a slow but clear improvement while scaling up OpenCL support: time per picture went from 4.25 s (No) to 4.15 s (Standard), and then back up to 4.19 s (High).
Problem is: it took ASP 1.0.1.10 only 1.31 s per picture!
Is anyone seeing similar results on OSX?
Yes I am finding on my MacBook Air that 1.1.0.28 is slow and produces very slow Preview builds, 1.0.1.10 is faster.
Same problem here. The editing is better, no resolution loss while editing, but slower. The change applies for me one or two seconds after the edit. For example, when changing with a slider.
I don't think the Macbook Air's graphics card supports OpenCL? There are indications the Intel's HD 3000 does not support OpenCL, and there are questions about the HD 4000 may have difficulties also.
Just to add my experience to this discussion. I tried a test on my late 2011 Macbook Pro (2.2 ghz i7, 8gb ram) with an ATI Radeon HD 6750M dedicated graphics display. It uses the Intel HD 3000 built in the i7 for normal use, but switches to a dedicated graphics display when needed.
I chose 28 Pentax K5 RAW DNG files that ran between 25-32 mb each, and created full size jpgs of them as an exercise.
Here are my results.
No Acceleration 55 seconds
OpenCL on, Low 40 seconds
OpenCL on, STD 23 seconds
OpenCL on, High 25 seconds
I have no idea why the high OpenCL setting fell off in speed??? But less than a second per image is pretty speedy performance in my view.
Dick