Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Short vs Int vs Floating Point usage in Kernels

I'm just wondering if anyone else has successfully used smaller fixed point representations for data in their kernels compared to floating point. By that I mean I'm playing around with changing my a...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

--- Quote Start ---

I think the example from the optimization guide is too small to show any benefits of masking. There is really nothing in the kernel other than two loads, one multiply and one store. If the datapath was bigger, I believe we will start seeing same impact.

--- Quote End ---

Actually, I see a slight increase in logic (due to masking operations), and a reduction in DSP usage due to narrower multiply operation.