Hi community, I have an interesting question for you. I have a schematic in xschem and the xschemrc file and I am able to simulate the schematic, now the question is, how can I run the simulation from a script in python? Theoretically what I done with the GUI, push "netlist" button and than "simulate", but how can I do this command? any example?

Hello All Any idea on how to run mismatch simulations in ngspice for sky 130 based netlist??

klayout LVS isn't set up for sky130, is it?

The klayout lyp file colors are 🤮

hi , I am using hierarchical flow with BLOCKA and BLOCKB , done seperately in openlane and plugged in the lib , lef and GDS to TOP . But getting PDN issue. What are changes needed to be done in config.tcl for TOP. So that the power hookup happens properly.. [INFO]: Generating PDN... [ERROR]: during executing openroad script /openlane/scripts/openroad/pdn.tcl [ERROR]: Exit code: 1 [ERROR]: full log: designs/RRAM_CONTROLLER/runs/0909/logs/floorplan/7-pdn.log [ERROR]: Last 10 lines: [WARNING PSM-0038] Unconnected PDN node on net VPWR at location (2446.200um, 2298.400um), layer: 2. [WARNING PSM-0038] Unconnected PDN node on net VPWR at location (2451.600um, 2298.400um), layer: 2. [WARNING PSM-0038] Unconnected PDN node on net VPWR at location (2457.000um, 2298.400um), layer: 2. [WARNING PSM-0038] Unconnected PDN node on net VPWR at location (2462.400um, 2298.400um), layer: 2. [WARNING PSM-0038] Unconnected PDN node on net VPWR at location (2467.800um, 2298.400um), layer: 2. [WARNING PSM-0038] Unconnected PDN node on net VPWR at location (2473.200um, 2298.400um), layer: 2. [WARNING PSM-0038] message limit reached, this message will no longer print

Hello All, I'm struggling a bit with the analog layout using magic, I found two approaches: 1. Draw poligons from scratch as in BMINCH's youtube tutorials (e.g.

https://www.youtube.com/watch?v=RPppaGdjbj0▾

https://www.youtube.com/watch?v=RPppaGdjbj0

) a. The main pros are that you get to understand pretty well the layer configuration and make sense of your layout for possible optimization b. The cons are that it may get hard to manage for big designs 2. Import the devices from the top top menu, e.g. "Device 1" where you have the basic nmos and pmos (e.g. as in this video around minute 17.44:

https://www.youtube.com/watch?v=uTlpT6Lszm4▾

https://www.youtube.com/watch?v=uTlpT6Lszm4

). a. Pros: fast and easy to generate devices, mostly if you have several fingers and want to include guard ring b. Cons: I managed to generate nmos and pmos for an inverter, but in the case of multiple fingers, it generates also the metals and the vias and I'm finding it difficult to connect or edit the generated cells Any opninions or advice on which approach is more convenient in the context of SKY130? I guess it's really personal but I'd like to read what people here are doing. Also, for the second case, do you know maybe how can I edit the generated cells if I want to remove or add some poligons to what is generated by default?

Hi, I'm having problems installing klive.

Error 0: Request creation failed, fetching <http://sami.klayout.org/repository.xml>

The file is online and I'm running klayout on a docker container. Does anyone has this error and solve it?

Hello, I am new to this and still learning. I am currently getting this error, where can I find more information on my error and how to solve it? I am just trying to run the flow for a very simple sv circuit. ``default_nettype none` module Circuit ( output var logic b, input var logic clk, input var logic enable, input var logic a ); always_ff @(posedge clk) if (enable) b <= a; else b <= 0; endmodule

[18:22:27] ERROR    Subprocess had a non-zero exit.                                                                                                                                                                                                                     step.py:1170

[182227] ERROR Last 10 line(s): step.py:1175 [INFO] Setting signal max routing layer to: met5 and clock max routing layer to met5. {*}-density 0.81875 -timing_driven -routability_driven -skip_io -pad_right 0 -pad_left 0 -init_wirelength_coef 0.25 [WARNING GPL-0150] -skip_io will disable timing driven mode. [WARNING GPL-0151] -skip_io will disable routability driven mode. [INFO GPL-0002] DBU: 1000 [INFO GPL-0003] SiteSize: 460 2720 [INFO GPL-0004] CoreAreaLxLy: 5520 10880 [INFO GPL-0005] CoreAreaUxUy: 12880 16320 [ERROR GPL-0120] instance 2 width is larger than core. Error: gpl.tcl, 69 GPL-0120 [182227] ERROR Full log file: 'runs/RUN_2024-03-18_18-22-24/18-openroad-globalplacementskipio/openroad-globalplacementskipio.log' step.py:1176 [182227] WARNING The following warnings were generated by the flow: flow.py:628 [182227] WARNING 'PNR_SDC_FILE' is not defined. Using generic fallback SDC for OpenROAD PnR steps. flow.py:629 'SIGNOFF_SDC_FILE' is not defined. Using generic fallback SDC for OpenROAD PnR steps. 'PL_TARGET_DENSITY_PCT' not explicitly set, using dynamically calculated target density: 81.87500… [182227] ERROR The following error was encountered while running the flow: main.py:152 Global Placement Skip IO: subprocess (1, ['openroad', '-exit', '-no_splash', '-metrics', '/home/pontus/repositories/pm32/runs/RUN_2024-03-18_18-22-24/18-openroad-globalplacementskipio/or_metrics_out.json', '/nix/store/jj7zqc4z6fg8plw8w86wpl589yapxwlz-python3-3.11.6-env/lib/python3.11/site-packages/openlane/scripts/openroad/gpl.tcl']) failed [182227] ERROR OpenLane will now quit.

For a design I'm working on for Tiny Tapeout, I need to tie all unused outputs to ground. What's the best way of doing this wrt to LVS? The easiest way would be to just strap them all across with a wire tied to ground, but this causes issues for extraction (pins shorted) and lvs.

Hi @Stefan Schippers I'm trying to generate this curve using Xschem and ngspice but I couldn't find a way to plot the frequency