CPU vs eGPU - different results

Topaz Products Product Technical Support
1

In several threads, I’ve read that people get different results depending on whether their Topaz product is run on CPU only, or whether they run on an external graphics processor.

I don’t understand this. Why would the computation result depend on the computational platform that runs it? I would expect a fully determined computation to run more slowly on CPU-only execution compared to an eGPU. I would not expect to get different answers from an eGPU vs. CPU.

Would appreciate it if someone would explain. Thank you.

2

my personal guess is that the cpu is able to calculate more precision than some gpu. maybe a lack of floating point precision in some gpu. who knows. :slight_smile:

3

The best to do is to try that, i will try.