Forum Discussion

Occasional Contributor

6 years ago

using DSPs in the FPGA as ALMs for standard FFT IP

Hi, We are using standard FPGA FFT IP for our design given by intel. we want to use many FFT IPs parallely for that the problem that we are seeing is resources for ALMs required is not suffiecient ...

KennyT_altera

Super Contributor

6 years ago

you can try look for https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/qts/qts_qii51008.pdf if there dsp attribute.

also, if you look for 16-32, there are dsp balacing to help you auto convert the dsp to logic

VenkateshSathar

Occasional Contributor

6 years ago

Hi,

I looked in the PDF 16-32, that is telling about the option of DSP balancing when ALMs are not available how to use DSP blocks as slices, but my case is different right now for me whatever ALMs and DSPs block conusmption mentioned in FFT User guide are not matching with the current consumption.

As in the datasheet/user guide it is mentioned that DSP blocks will be consumed but in the actual scenario ALMs are getting consumed where I require ALMs for my other logic blocks to develop. So, I want the FFT IPs I added in my project I want DSP blocks for computation/multiplication logic to be consumed instead of ALMs.

My question is why that is not happening for the above synthesis settings i gave previously. To make it happen what to do?

Forum Discussion

using DSPs in the FPGA as ALMs for standard FFT IP

Recent Discussions

Agilex 7 slew rate reconfiguration

Agilex-7 AXI MCDMA for PCIe hang

Constraints not being picked for DCFIFO

Can't generate F-Tile Ethernet Hard IP Design Example

MAX10 TSE reference design