To me, the essential of SE is to write a good constraint GCF file.
Almost the rest parts could sustained from foundry, but GCF is definite constraint to your design.
BTW, how could we write a perfect GCF constraint file?
I now find the constraint file format is not same for SE and Astro.
SE is using GCF which was created by cadence few years ago.
Astro may use SDC for its own constraint format.
sigh~! I begin to feel that i could not keep the pace of the developing of EDA tools!
So , system understanding and design methodolody is the key point for me.