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VenkateshSathar's avatar
VenkateshSathar
Icon for Occasional Contributor rankOccasional 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's avatar
KennyT_altera
Icon for Super Contributor rankSuper Contributor
6 years ago

That is the only setting you have. How much percent you have used for your DSP block? Did you get fitter error?

you can try to turn off the auto DSP block replacement if you want your DSP to be place in LAB but not in the DSP block. One Lab consist of 2 ALM, if your dsp logic does not put in the DSP block, it will put in the LAB.

VenkateshSathar's avatar
VenkateshSathar
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

Resources usage summary report also added you can see.

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Now I am getting a different problem.

  1. None of the dsps getting consumed for fft ip in the design and all ALMS only consuming
  2. Even though 72% of M20K used , it is saying that fitter can't run as it requires more than 440 M20K.

I am using quartus 16.1.2

Why like this what's wrong in settings?

anything more to set and correct..?😏 😬