Windows vs Linux tool set

Daixiwen,

Good point. A correctly constrained design that meets timing should be equivalent even with different place-and-routes. If two designs meet timing but behave differently, it's more important to debug what is wrong than trying to get the two compiles to have identical results. (I'm not sure if this is the original poster's issue, just bringing it up. There are reasons that being able to get the same results is important, but there have been many times I've seen user's more concerned about this than they probably should be...)