Changing memory clock rate and core clock rates for testing scalability

Accelerated Computing CUDA CUDA Programming and Performance
1

I saw in the following paper that they are changing the memory clock rate and the core clock rates on an NVIDIA GTX280.
[url=“http://download.microsoft.com/download/2/d...20on%20GPUs.pdf”]http://download.microsoft.com/download/2/d...20on%20GPUs.pdf[/url]

How can I change these parameters?

Thanks.

2

I saw in the following paper that they are changing the memory clock rate and the core clock rates on an NVIDIA GTX280.
[url=“http://download.microsoft.com/download/2/d...20on%20GPUs.pdf”]http://download.microsoft.com/download/2/d...20on%20GPUs.pdf[/url]

How can I change these parameters?

Thanks.

3

Your link leads to a 404 error (page not found), so it’s a little difficult to discern the context of your question.

But advice in general on GPU overclocking can be had from just about any enthusiast Forum. Don’t know if the CUDA-specific programmers are much into that sort of thing.

As for apps to accomplish this, try:

RivaTuner
eVGA Precision
nVidia System Tools with ESA support, specifically the Performance app
ATITool

Which can not only OC the card on a non-permanent basis but set up profiles for such to be applied at boot-up.

On a more permanent basis, you can edit the BIOS and reflash it to new clocks with NiBiTor and NVFlash…

4

Your link leads to a 404 error (page not found), so it’s a little difficult to discern the context of your question.

But advice in general on GPU overclocking can be had from just about any enthusiast Forum. Don’t know if the CUDA-specific programmers are much into that sort of thing.

As for apps to accomplish this, try:

RivaTuner
eVGA Precision
nVidia System Tools with ESA support, specifically the Performance app
ATITool

Which can not only OC the card on a non-permanent basis but set up profiles for such to be applied at boot-up.

On a more permanent basis, you can edit the BIOS and reflash it to new clocks with NiBiTor and NVFlash…

5

The nvapi allows you do change the clock rates from your own code.
[url=“http://developer.nvidia.com/object/nvapi.html”]http://developer.nvidia.com/object/nvapi.html[/url]

This is useful for making Shmoo plots which can you insight about whether your kernels are memory limited or not.

Of course I haven’t used this API myself, it’s been on my TODO list!

6

Ooh, now we can create our own version of RivaTuner!

Thanks for that link, btw. Must’ve been too long away from the site…

7

[url=“http://download.microsoft.com/download/2/d/6/2d6d8a71-2715-4c4d-bde1-d21ee9ca95b6/Discrete%20Fourier%20Transforms%20on%20GPUs.pdf”]http://download.microsoft.com/download/2/d...20on%20GPUs.pdf[/url]

This is the link to the paper. Could you please be more specific about what needs to be done here? Has anyone used the NVAPI before?

8

Could someone from NVIDIA provide more help on this please?

9

Never used NVAPI, no idea how it works, sorry.