now i am estimating and analyzing power of ASIC with power compiler of synopsy tools, but there are some question:
1, what is the relation of forward saif and back saif?
forward saif is generate by lib2saif, but there are sereval simulation lib and
which one should be used for generating forward saif?
i enstimate power with different back-saif which is generated by different forward saif (which generated by different simulation lib with lib2saif) , but power result is same nearly, i am puzzled, power is not relate to forward saif or just tell powe compiler the sim lib is SDPD?
i had ever combined serveral forward saif to one forward saif , but at last
power result is same too.
2. if power compiler need sdc file for report power?
one design without sdc report power 7w, but with sdc report power 800mW
however most design with sdc file power is same as report_power without sdc file i am so puzzled.