I m trying to run LVS with klayout on a simple inverter from

Question

I m trying to run LVS with klayout on a simple inverter from the library I use the run lvs py script on this gds and schematic file sp but it doesn t seem to match The extracted netlist looks correct though I also tried explicitly naming the well the same thing VNB but that didn t fix it either For some reason nothing matches not pins devices nothing

Matthew Guthaus · Answer

ah hah another sky130 scaling problem The extracted dimensions were 1e6 off from the spice dimensions

Tim Edwards · Answer

Are you sure What you posted above had `w=1` from klayout and `w=1e+6u` from magic which is the same thing `u=1e 6` multipler in SPICE BTW I recently rewrote magic s netlist output routine to avoid the fixed use of the `u` multiplier but the old notation is stuck in the netlists that are in the PDK that were generated by magic

Matthew Guthaus · Answer

Yeah I stared at it for a long time They seemed to match However setting the scaling on in the scripts worked

Matthew Guthaus · Answer

I m wondering if it scaled after parsing the netlists or something

Matthew Guthaus · Answer

If you want to try it here s the entire setup ```cd OpenLane make mount klayout b r openlane pdks sky130A libs tech klayout lvs sky130 lvs rd input=sky130 fd sc hd inv 1 gds rd report=sky130 fd sc hd inv 1 lvsdb rd schematic=sky130 fd sc hd inv 1 sp rd target netlist=extracted sp rd scale=true```

Matthew Guthaus · Answer

with the two files above