Honored Contributor
Honored ContributorAre you sure you want to skip fit attempts? I think that flow has been deprecated.
For hard to route designs(which don't occur nearly as often as they did a long time ago), the fitter would realize it just couldn't route the design and then start another fit attempt. On this next attempt it would no longer worry about optimizing for performance and work almost solely on routability. Every once in a while it would do a third attempt. The end result was: - The compile times became ridiculous. What might take 2 hours to come back and say it couldn't fit, might run for 10-20 hours. - Quite often it still wouldn't fit, so you waste a lot of time waiting. - On the occasions this actually worked, the timing was so poor that the results were almost useless anyway. I believe that setting was supposed to tell the fitter to not even try the first to attempts, but jump straight to the third one. This would reduce the compile time if you knew the first two attempts wouldn't work anyway, but as mentioned, the result was generally useless. I would comment out that assignment and try a normal compile first. (And if you already know all that and know you need that setting to work, sorry for wasting your time...)
