Hi, My openlane flow failed at the LVS step as it sees pin mismatch at the top level (user_project_wrapper). The problem is that it does not see vccd1. I did not modify

config.tcl

or the ports in

user_project_wrapper.v

.

27-powered_netlist.v

also has vccd1 there. Does anyone know what is the issue?

Check your extraction logs to see if vccd1 has been shorted. Please post your lvs log for more advice.

Hi Mitch, thank you for the response. The lvs log is attached. Where can I find the extraction log

Looks like vccd1 and vccd2 may be shorted. If you're using openlane, the extract log might be in

find . -name '*gds.spice.log

but they may have changed the location. It may appear as a warning like

Warning:  Ports "vccd1" and "vccd2" are electrically shorted.

I do not find any file with

find . -name '*gds.spice.log'

@Jake Ke can you share your user_project_wrapper config.tcl and your repo link?

Hi @Vijayan Krishnan, the repo link is https://github.com/jake-ke/caravel_fast_ann_fieldious. The config.tcl is attached

How about

find . -name '*spice.log'

since it looks like you're doing lef extraction instead of gds extraction.

Hi @Mitch Bailey, yeah, there is

27-spice.log

which is attached in the previous message

Which is the file you attached... Sometimes there are shorts that don't get flagged.

@Mitch Bailey I have attached in this message

Save the following to

merge_short.awk

and then run

awk -f merge_short.awk <path to extraction results>/user_project_wrappper.ext

/^merge/ {
        if ( last == "" ) {
                if ( $2 !~ /\// && $2 !~ /#/ ) {
                        shorts = $2;
                }
        }
        if ( last == $2 ) {
                if ( $3 !~ /\// && $3 !~ /#/ ) {
                        shorts = shorts " " $3;
                }
        } else {
                if ( last != "" && shorts ~ / .* / ) {
                        print shorts;
                }
                shorts = "";
        }
        last = $3;
}
END {
        if ( last != "" ) {
                print shorts;
        }
}

@Mitch Bailey, I ran

awk -f merge_short.awk ./openlane/user_project_wrapper/runs/user_project_wrapper/tmp/finishing/user_project_wrapper.ext

and it returned nothing

The following PDN i get for wrapper design. The macro occupied full core area.

@Vijayan Krishnan, is the macro area too big?

yes. You can see right corner. only 20micron space left

Hi @Vijayan Krishnan @Mitch Bailey , we have found the main issue is that one of the horizontal M5 metal stripe added by openlane overlaps the horizontal power stripes of the user macro. Thank you for your help