Hi i got property error while doing lvs check how to resolve it i attached the comp.out file , inv_2.spice(layout) inv.spice (schematic) @Tim Edwards @Mitch Bailey thank you

It appears that you are not using the setup file for sky130 when doing LVS?

sorry , i miss to add the sky130 setup file could you help me how to add it @Tim Edwards thank you

Yes, that's the general idea. The setup file tells netgen, for example, to ignore all of the obscure parameters that either don't appear in one or the other netlist or are not expected to match (e.g., source and drain areas are estimated in the schematic).

thank you @Tim Edwards got it .

Although your simple circuit may pass LVS, I'd suggest 2 things. 1. When extracting, use the

ext2spice lvs

before

ext2spice -o inv_2.spice inv_2.ext

. 2. When netlisting the schematic, make sure

Simulation -> LVS netlist: Top level is a .subckt

is checked. Then when you run LVS, use

lvs "inv_2.spice inv2" "inv.spice inv" $PDK_ROOT/sky130A/libs.tech/netgen/sky130A_setup.tcl