10-Way NVIDIA GeForce GTX OpenCL & CUDA Performance Benchmarks

[phoronix]

Phoronix: 10-Way NVIDIA GeForce GTX OpenCL & CUDA Performance Benchmarks

With having just added some new OpenCL/CUDA benchmarks to the Phoronix Test Suite and OpenBenchmarking.org, I took this opportunity to run a variety of OpenCL/CUDA GPGPU tests on a wide-range of NVIDIA GeForce graphics cards.

http://www.phoronix.com/vr.php?view=22388

[Guest]

Phoronix: 10-Way NVIDIA GeForce GTX OpenCL & CUDA Performance Benchmarks

With having just added some new OpenCL/CUDA benchmarks to the Phoronix Test Suite and OpenBenchmarking.org, I took this opportunity to run a variety of OpenCL/CUDA GPGPU tests on a wide-range of NVIDIA GeForce graphics cards.
http://www.phoronix.com/vr.php?view=22388

The table in the article is showing invalid frequencies for GTX 950: 135/405MHz

[Michael]

The table in the article is showing invalid frequencies for GTX 950: 135/405MHz

It's likely just some fallback being used by the NVCTL extension since I don't recall if the GTX 950 was "officially" supported then or not, etc.

[Guest]

Phoronix: 10-Way NVIDIA GeForce GTX OpenCL & CUDA Performance Benchmarks

With having just added some new OpenCL/CUDA benchmarks to the Phoronix Test Suite and OpenBenchmarking.org, I took this opportunity to run a variety of OpenCL/CUDA GPGPU tests on a wide-range of NVIDIA GeForce graphics cards.

http://www.phoronix.com/vr.php?view=22388

"SHOC: CUDA - Texture Read Bandwidth" is flawed.

[Michael]

"SHOC: CUDA - Texture Read Bandwidth" is flawed.

The upstream code doesn't look like it scales too well for that sub-test, is that what you mean?

[GraysonPeddie]

Is nVIDIA GeForce GTX 750 Ti a good card for using Blender when using Cycles renderer? I have an AMD A8-7600 APU which I cannot use OpenCL for basic 3D rendering.

Consider that my video (between 0:00 to 0:37) would take 2 days to render:

https://www.youtube.com/watch?v=B0C43BOxMpU

But note, however, that I used Blender's internal renderer and not Cycles renderer. Plus, this is for my video project that I did two years ago.

I want a video card with a maximum of 75W TDP.

[Guest]

The upstream code doesn't look like it scales too well for that sub-test, is that what you mean?

I looked into the code of SHOC and cannot explain why "CUDA - Texture Read Bandwidth" would generate such results for all GTX 9xx.

Maybe those results are correct and represent an architectural limit of all GTX 9xx GPUs when reading textures from GPU cache - though I find this hard to believe.

Another option would be that CUDA 7.5 compiler applied some strange optimization to the code.

[Guest]

Is nVIDIA GeForce GTX 750 Ti a good card for using Blender when using Cycles renderer? I have an AMD A8-7600 APU which I cannot use OpenCL for basic 3D rendering.

Frame 0 of ring_27.blend (http://download.blender.org/demo/test/Demo_274.zip):

7850K@4GHz: 2m05s
GTX 750 cuda: 1m47s

[-MacNuke-]

Also your APU weirdly runs fast

Not really My i7-4750HQ 2Ghz Notebook CPU renders this scene in 1m11s.

But it is pretty annoying that Blender does not support OpenCL that well. I mean, yeah AMDs OpenCL Compiler is shit but LuxRender seems to handle that pretty well.

At least under Windows AMD Cards are beating the shit out of NVidia Cards in LuxMark.

[Guest]

Would you mind trying your benchmark with bigger tile sizes? As far as I know GPUs don't like tiny (32px) render tile sizes. Also your APU weirdly runs fast Here are my results when running with different tile sizes:

(Running on Windows 10 x64, Blender 2.76b x64, Core2 Quad Q9550 2.8GHz, 4GB DDR2 memory, GTX960 4GB)

https://www.meta-chart.com/share/ring_27-q9550-vs-gtx960

7850K@4GHz cpu: 2m05s (tile=32x32), 2m03s (16x16)
GTX 750 cuda: 1m47s (tile=32x32), 54s (64x64), 44s (128x128), 43.89s (256x256)