Compilation time for Quartus II 9.0

Hi all,

thanks for the numbers, Hua. I agree with sw181, there are also many more options concerning the Synthesis step, so you can probably trim that time down, if the design allows this.

My comparison is both for full compilation and full hold time optimisation. And the "optimisation" is not for getting better positive values here, but rather something close to zero at all. I guess Q9.0 is trying much more aggressively to get a satisfying result, thus takes more time. I have to say that this is not working very well here, I get about the same results as with Q8.1 (that was much better than Q8.0).

I tried the clock gate conversion, it doesn't help much - we have all this stuff that breaks the conversion, even though I sometimes don't understand why. Maybe I should play with some constraints...

/emanuel