> 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.
Yeah, well, we will release our machine to the public on Thursday, and the team would kill me if I suggested we moved to a different tool set right now. It takes a few weeks to run all the tests we have to run to verify that things work right for production use... We do have a 10.1 toolset installed, but it doesn't quite work yet. We have a couple of ROACH boards in the mail to us, so I guess we'll be migrating to 10.1 soon enough! John > > 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 >>>> >>>> >>> >>> >> >> >
