gpu floating point precision benchmark tool to verify accuracy of floating point calculations

Accelerated Computing CUDA CUDA Programming and Performance
1

Hi,

 Is there any benchmark tool available to verify the accuracy of floating point precision calculations on GPU with comparison to CPU.

Thanks

2

If the goal here is to compare specific floating-point computations between CPU and GPU, I would recommend reading the following whitepaper that explains in some detail why differences may be observed:

http://developer.download.nvidia.com/assets/cuda/files/NVIDIA-CUDA-Floating-Point.pdf

Since floating-point computations on both CPUs and GPUs have a certain amount of numerical error associated with them, I prefer and recommend comparison with a higher precision reference (such as double-double arithmetic) to assess the error for each. What error in the final results is acceptable is typically a function of the application.

3

Thanks for a quick reply