[Bf-committers] massive cuda speed improvements with Cuda 5.0/5.5

[Thomas Dinges]

Hi Brecht,
this looks very promising. On my Geforce 540M (Windows x64, driver 
320.20) I get those render times with the BMW scene (100 Samples, 
128x128 tiles).

Vanilla Trunk (Toolkit 4.2): 2.29 minutes
Vanilla Trunk (Toolkit 5.5 RC): 3.54 minutes

Trunk + patch (Toolkit 5.5 RC): 3.00 minutes

So, that is definitely much better. :)

Best regards,
Thomas

Am 03.06.2013 21:20, schrieb Brecht Van Lommel:
> Thanks for testing. I've also been doing some experimenting with
> compile flags and other things here. So far it seems I can make my
> 650M render a few percentages faster compared to CUDA 4.2, but 460 GT
> is still considerably slower with the BMW scene (2m30s with 5.5
> compared to 2m01s with 4.2), and 580 GTX had a similar difference. It
> seems you are testing with a 6xx card so that makes sense.
>
> Patch attached for those who want to test this with 5.0/5.5.

-- 
Thomas Dinges
Blender Developer, Artist and Musician

www.dingto.org