Cuda Samples too slow on 980 Ti

Accelerated Computing CUDA CUDA Programming and Performance
1

Hello,
I purchased 980 Ti and setup CUDA on my machine. I am trying the nBody with Visual Studio 2013. I get:

17 GFlops / second and it is way too slow. My laptop with 192 CUDA cores seems to be better! Any ideas?

Thank you

2

Did you build a debug or did you build a release project when you built the nbody sample?

If you built a debug project, try building a release project.

3

I love you! I am running at 2.8 TFlops (274 frames per second!).

Why would that be though, was the bottle neck the host?

And thank you very much!

4

For debug builds, all code optimizations are turned off in the compiler. The performance difference to a fully optimized release build can be huge, as you have found out. Make sure to use the -benchmark switch of the nbody application if you want to use this as a performance stress test, otherwise performance may be limited by the visualization.