fft size in fpga

Hello,

I am implementing a 128 point real Radix-2 fft, data and coefficient
widths are 16 bit.
I am synthezising it for use in an FPGA. However, it is taking a very
long time to synthesize. (approx 3 days using Leonardo on a 2 GHz
machine with 512 MByte RAM) I am using a 20K1000 Altera FPGA. The ram
required by the fft will be internal to the FPGA

Will this design take up all the space on the device. From past
experience, can someone give me an indication of what area of the
device the fft will occupy.

Surely if it takes up most of the device, then it will be too big, as
I have other features to implement in the FPGA also !!

Thank you
PJ

paddyfrombelfast@yahoo.co.uk (PJ) wrote in message news:<46a6277d.0309140648.6133754b@posting.google.com>...
> Hello,
> 
> I am implementing a 128 point real Radix-2 fft, data and coefficient
> widths are 16 bit.
> I am synthezising it for use in an FPGA. However, it is taking a very
> long time to synthesize. (approx 3 days using Leonardo on a 2 GHz
> machine with 512 MByte RAM) I am using a 20K1000 Altera FPGA. The ram
> required by the fft will be internal to the FPGA
> 
> Will this design take up all the space on the device. From past
> experience, can someone give me an indication of what area of the
> device the fft will occupy.
> 
> Surely if it takes up most of the device, then it will be too big, as
> I have other features to implement in the FPGA also !!
> 
> Thank you
> PJ

That is strongly related to your memory usage !