20-Way NVIDIA/AMD GPU Darktable OpenCL Photography Performance

[Xelix]

No, they are HEAVELY multithreaded. Lots of CPUs take more than a minute for the "boat" test.

Ok, maybe Michael could edit the article to mention this? Along with the number of threads used.

[Jahimself]

Would it be unfair to say that AMD is better GPU if you work on a graphic related jobs, and NVIDIA better if you play Video games?

[twoertwein]

it would be nice to have a comparison of some Intel CPUs vs. their GPUs with beignet

[Xelix]

Would it be unfair to say that AMD is better GPU if you work on a graphic related jobs, and NVIDIA better if you play Video games?

I think the main thing one cay say for sure is that OpenCL is pretty much a second-class citizen for Nvidia, they prioritize CUDA much more (in terms of performance, tooling, etc).

[schmidtbag]

Thanks for including only the CPU results. Makes the graphs much more interesting.

[nomadewolf]

Would it be unfair to say that AMD is better GPU if you work on a graphic related jobs, and NVIDIA better if you play Video games?

It is unfair, because 'better' is very relative:
- For some 'better' means faster, no matter the cost
- For others, it means bang for buck
- For others, Open Source drivers...

It all depends on what you're looking for...

[alelinuxbsd]

Nice.
Perhaps once Gimp 2.10 is ready could be made another OpenCL test for it.

[Tuxee]

it would be nice to have a comparison of some Intel CPUs vs. their GPUs with beignet

Darktable reports for my HD520 on my laptop CPU: OpenCL found, unknown GPU - and abandons OpenCL support.

[twoertwein]

Darktable reports for my HD520 on my laptop CPU: OpenCL found, unknown GPU - and abandons OpenCL support.

strange, why should darktable care about the type of GPU? As far as I know, darktable tests whether the GPU has enough memory and whether it is fast enough. Based on that it may disable OpenCL support. I have an old Intel HD 4000, which is slower than the CPU

[Tuxee]

strange, why should darktable care about the type of GPU? As far as I know, darktable tests whether the GPU has enough memory and whether it is fast enough. Based on that it may disable OpenCL support. I have an old Intel HD 4000, which is slower than the CPU

That's the output:

[opencl_init] opencl library 'libOpenCL.so.1' found on your system and loaded
unknown GPU generation
[opencl_init] found 1 platform
[opencl_init] could not get device id size: -1
[opencl_init] found 0 device
[opencl_init] FINALLY: opencl is NOT AVAILABLE on this system.