[Bf-cycles] Collecting official benchmark results

db4tech at yahoo.co.uk db4tech at yahoo.co.uk
Fri Oct 30 18:37:15 CET 2015

Hi Sergey,

Couple of questions

1) Are you mainly interested in results from newer graphics cards, 
NVIDIA 700 onwards, rather than older Fermi based cards (GTX 580 for 

2) Is there a reason the Cycles benchmark downloads do not contain all 
required files in one easy compressed archive (separate archive for each 
scene), consisting of blend file in a relevantly named folder with sub 
'Texture' folder/s (see below example)? Just an idea that may help 
prevent incorrect results due to a missing texture/s.

*/Classroom.zip/ example:*


On 30/10/15 16:52, Sergey Sharybin wrote:
> Hey everyone,
> It appears that latest hardware from AMD in combination with latest 
> beta driver gives really good performance on OpenCL rendering, even 
> when using so called mega kernel. In fact, single Fiji card 
> outperforms double D700 cards from Mac Pro by a factor of 3 here in 
> the studio.
> We would like to investigate performance on various hardware and 
> systems further, including:
> - CPU performance
> - GPU CUDA performance
> - GPU OpenCL performance
> That's exactly where you can help us! :)
> Here are instructions how do a proper benchmark.
> First of all, you need to use officially approved benchmark scenes 
> from [1]. You can grab then using regular SVN command:
>   svn co 
> https://svn.blender.org/svnroot/bf-blender/trunk/lib/benchmarks/cycles/
> Tests are to be done with latest blender builds from our buildbot [2]. 
> This is crucial because we like to collect performance from both split 
> and mega kernels and switch between them is only possible with latest 
> builds.
> In order to make sure split kernel to use do the following console trick:
> Windows:
>   path/to/blender.exe
> Linux / OSX:
> In order to make sure mega kernel is used use the same console trick 
> but use CYCLES_OPENCL_MEGA_KERNEL_TEST instead of 
> Please always do final (F12) renders with the same resolution and 
> number of samples as stored in the file.
> Sometimes it's needed to tweak tile size tho, for CPU tile size of 
> 32x32 is a good setting, for GPU it's 256x256.
> For AMD OpenCL it's recommended to use latest 15.10beta driver.
> When reporting results please include:
> - Exact CPU model you used
> - Exact GPU model you used
> - Timing itself of the scenes you rendered
> - Any modifications you did to the file
> If some configuration failed to render properly it's also interesting 
> to know.
> For now please submit results here in a reply mail or mail directly to 
> me. Once we've got enough data we'll do a nice spreadsheet and share 
> all the results.
> Thanks in advance,
> Happy Cycling!
> [1] 
> https://svn.blender.org/svnroot/bf-blender/trunk/lib/benchmarks/cycles/
> [2] https://builder.blender.org/download/
> -- 
> With best regards, Sergey Sharybin
> _______________________________________________
> Bf-cycles mailing list
> Bf-cycles at blender.org
> http://lists.blender.org/mailman/listinfo/bf-cycles

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