Neanderthal 0.8.0: CPU and GPU support on Linux, Windows, and OS X

Re:Neanderthal 0.8.0: CPU and GPU support on Linux, Windows,... by akssri on Sunday October 09, 2016 @02:15PM (#12672468)

I found the latest version of clBLAS on Fiji achieves a fantastic ~4 Tflops (on 2^n matrices). NVblas has probably had more resources allocated to it that clBLAS. I'd be positively surprised if the kernels in Neantherdal beat those. Do you plan on adding benchmarks for the GPU calls ? I can help running the clBLAS benchmarks, if you like, since I have a tuned setup.

If you want to take a look at it, the AutoGemm generator seems to be a simple python script written in order to overcome the limitations of the C preprocessor. I was considering using its tiling structure, since I already have a Lisp->OpenCL compiler in place (and have had no luck beating it). See, for instance,

https://github.com/matlisp/matlisp-opencl/blob/master/tests/...

https://github.com/matlisp/matlisp-opencl/blob/master/src/te...

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Re:Neanderthal 0.8.0: CPU and GPU support on Linux, Windows,... by dragandj on Sunday October 09, 2016 @02:17PM (#12672486)

What is the theoretical MAX flops on that Fiji card? I achieve 3.75 TFLOPS on Hawaii, which has much less power than Fiji...

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Re:Neanderthal 0.8.0: CPU and GPU support on Linux, Windows,... by akssri on Sunday October 09, 2016 @02:18PM (#12672499)

I think it's about 5.6 Tflops. Wow, 3.75 Tflops on Hawaii is very good indeed; I agree this is not something that clBLAS would beat by a wide-margin if at all.

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Re:Neanderthal 0.8.0: CPU and GPU support on Linux, Windows,... by dragandj on Sunday October 09, 2016 @02:22PM (#12672517)

Judging by this page, https://en.wikipedia.org/wiki/List_of_AMD_graphics_processin..., Fiji has more than 8 TFLOPS.

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Re:Neanderthal 0.8.0: CPU and GPU support on Linux, Windows,... by akssri on Sunday October 09, 2016 @02:32PM (#12672585)

Ah, is this https://github.com/CNugteren/CLBlast ?

I was looking at, https://github.com/uncomplicate/neanderthal/blob/master/src/...

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Re:Neanderthal 0.8.0: CPU and GPU support on Linux, Windows,... by dragandj on Sunday October 09, 2016 @02:43PM (#12672661)

Yep, CLBlast. My old kernels are from the pre-CLBlast era. Now they are deprecated.

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Re:Neanderthal 0.8.0: CPU and GPU support on Linux, Windows,... by akssri on Sunday October 09, 2016 @02:26PM (#12672541)

Ah, you're right; 5.6 Gflops is for Hawaii. That's doubly impressive. I'll make sure to try your kernel then. Thank you!

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Re:Neanderthal 0.8.0: CPU and GPU support on Linux, Windows,... by dragandj on Sunday October 09, 2016 @02:30PM (#12672566)

Actually, the man who writes those amazing kernels is Cedric Nugteren. I call HIS kernels.

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