Using atMonitor for measuring GPU% on ATI 5770

[MacProGlenn]

I just installed an ATI 5770 in a 2008 8-core MacPro and was expecting at least some speed improvement over my existing 2600XT. I had read online that Aperture 3 used OpenCL, which is supposed to supported by the 5770.

When I didn't see much improvement, I started up atMonitor to see if I can see any GPU% activity. Nothing. Flatline. Does anyone know if atMonitor supports showing GPU activity with this card?

Thanks,
Glenn

[goMac]

I just installed an ATI 5770 in a 2008 8-core MacPro and was expecting at least some speed improvement over my existing 2600XT. I had read online that Aperture 3 used OpenCL, which is supposed to supported by the 5770.

When I didn't see much improvement, I started up atMonitor to see if I can see any GPU% activity. Nothing. Flatline. Does anyone know if atMonitor supports showing GPU activity with this card?

Thanks,
Glenn

What exactly are you testing? I think Aperture only supports OpenCL for exporting files.

[VirtualRain]

Actually I read that Aperture uses OpenGL and I don't think anyone knows exactly for what.

Good info here... http://blog.robertvojta.com/2010/02/27/aperture-3-performance-vram/

One of the comments:

I have to correct my statement - I had a discussion with some Apple people and they told me that Aperture 3 doesn't utilize OpenCL. Almost everything is done via OpenGL. This leads to an answer - your card, which doesn't support OpenCL, shouldn't be the bottleneck.

[MacProGlenn]

What exactly are you testing? I think Aperture only supports OpenCL for exporting files.

Import a few hundred RAW files using Aperture 3. Then export the versions. Lift and stamp 200 pictures. Render out a DVD using iDVD.

GPU shows 0% for all of the above. CPU, RAM and VRAM all climb up. I'm wondering if atMonitor just doesn't support the 5770?