VLSI - STA - Graph Based Analysis vs Path Based Analysis

[@hramtekkar]

are there any tool which perform GBA? I assumed all tools perform PBA only.

[@vlsideepdive]

Well default analysis of most tools is GBA

[@Aravindkalvakolu]

what if timing is not met in PBA too

[@vlsideepdive]

Then you to fix the path to meet timing depending upon whether setup violation or hold violation

[@Aravindkalvakolu]

@@vlsideepdive after placement also will check timing in that case which analysis will use?

[@vlsideepdive]

@@Aravindkalvakolu Typically its a matter of runtime. By default you will do normal timing and then PBA for paths you are not able to meet timing. But now a days some of the tools are fast enough to run PBA by default

[@vlsideepdive]

Full course here - vlsideepdive.com/basics-of-sta-and-timing-constraints-webinar/

[@truptichauhan3634]

Well explained

[@vlsideepdive]

Thank you