I should have provided some background for my question. I have a basic spectrometer model for an iBOB that uses 10.1. It works perfectly for FFT sizes up to 2k. Over the weekend I tried 4k and 8k, and both resulted in incorrect spectra. Timing was fine. So has anyone used 10.1 to compile a model with a FFT larger than 2k and successfully tested it in hardware?
Laura On Mon, Jul 27, 2009 at 2:06 PM, Jason Manley<jasonman...@gmail.com> wrote: > I suggest you try the 10.1. I no longer use the 7.1 libraries and they're > not under active development like the 10.1 libraries. There have been > numerous fixes to the 10.1 FFT to fix these and other problems. There are > still timing problems with 10.1, but the FFT is working AFAIK. > > My compile was 8192 channels (16384 channel) at 200MHz. > > Jason > > On 27 Jul 2009, at 11:02, John Ford wrote: > >>> I compiled an 8192 channel FFT the other day no problems. But I have >>> not yet tried it on actual hardware. >> >> We had trouble building large ones that meet timing. Randy modified the >> library to fix the problem. I'm thinking these were 4096 channel (8192 >> point) real 200 MHz IP rate builds. It works for us... >> >> This is using Xilinx version 7.X stuff. I don't know if the same fix >> would help the 10.1 version. >> >> John >> >>> >>> Jason >>> >>> On 27 Jul 2009, at 08:41, Jason Zheng wrote: >>> >>>> Last time I tried this on 10.1 with a 2^20 FFT design, the Matlab >>>> froze for a long time and I ended up closing the program. >>>> >>>> On Mon, Jul 27, 2009 at 8:31 AM, Laura Spitler <laura.spit...@gmail.com >>>>> >>>>> wrote: >>>> >>>> Hello everyone, >>>> >>>> What's the status of large green FFTs, where "large" is greater than >>>> 2^11? Can they now be reliably synthesized in 10.1? >>>> >>>> Thanks, >>>> Laura >>>> >>>> >>> >>> >> >> > >