Hello All, I created a 16*3 memory macro in OpenRAM using sky130 technology . I am trying to verify the functionality of the same by simulating a spice file generated by OpenRAM itself . But the values seems to be not matching (pics are attached) . What could be the possible reason? I am using ngspice for simulation. The spice.rc file has these commands : set ngbehavior=hsa set ng_nomodcheck option noinit .

What simulator are you using? What model files (how did you create them? with open_pdks?)

I used Ngspice for Simulation. Yes I have used Open_pdks

I've mostly used HSPICE (with the proprietary PDK) and Xyce, so there could be some differences.

Output load is unchanged. It is 27.56 fF as generated by spice file. I installed sky130 using the commands mentioned in OpenRAM GitHub documentation.

Can you send your design? What commit of OpenRAM and what config file are you using?

Hii . I included the wrong library path for the skywater pdk. Now it's working as expected . Thanks for the help