HCELL selection methods

Version 4

    Which methods are popular and why? This document summarizes inputs from various users and Mentor folks. Initially based on the "HCELL Selection for LVS" discussion thread at HCELL selection for LVS

    hcell analysis tool
    • performance oriented, good for TAT (turn-around-time)

    • easy to use after technique is learned

    • use Calibre Interactive or Query Server script

    automatch
    • easiest method, just use -automatch switch on command line, or click button in Calibre Interactive

    • likely to cause false errors, can waste time debugging nusisance errors

    • enforces rigid hierarchical matching between source and layout (not required by Calibre but desired by some users)

    standard cells plus specific cells of interest
    • would like more input from users regarding pros, cons, anecdotal experience etc. for this one.

    • may be important for xRC flow of standard cell designs, to support XCELLS.

    • please comment on this document or reply to the discussion thread if you have experience to share. You can get to the original discussion by clicking the following thread: HCELL selection for LVS