Critical paths in a verilog circuit

Question

This is not a strictly FPGA question... but related.

What program do you guys recommend to find critical paths in a verilog circuit file? As program inputs I would like to give in a technology mode a verilog file and a couple of circuit sites, and as outputs i would like the program to tell me the critical paths that pass through the provided circuit sites. It would be nice if the program would let me tweak the synthesis parameters. I've been using leonardo spectrum for some of my critical path analysis, but its really a big mess... So I am looking for alternatives.

Thanks!

jnissen · Answer

I have used Synopsys Prime Time mainly to determine timing paths. A bit quirky to learn but essentially you start off with .lib files (liberty format - timing data). These are converted to .db format and primetime is run. This is a common tool used in many designs so lots of information out there on it's use. If you have it available to you and you have supporting files go for it.