Replacing one CPU core with a GPU in structural and Fluent

[assafwei]

Hi all,

I saw all the publications by Ansys regarding replacing CPU cores with GPU cores.
I was looking at the tesla K40/K80, and since it is a considerable investment (about 20% of the total system cost) I was wondering if it is worth the investment. Ansys shows reducing solve time by 50%, I understand this is mainly marketing strategy, but my question is where will I see reduction in solve time when I replace a CPU with a GPU such as the k40/k80 and is this reduction considerable and worth the investment?
I know this is very general, but since I am just begining to explore this topic I will be very glad to get any input.

Thanks.

 

[Dave442]

As far as I'm aware, cost reduction on GPU is analysis dependent. If I were you I would get technical support to run a benchmark analysis (which is representative of the work you typically do) on a GPU. Then compare the reported computational cost against what you see on your current hardware.