Does anyone know a good way to view netlists as schematics?

Hello, what are the standard values for Kn' for NMOS and Kp' for PMOS for 130nm PDK. These values should be constant for PDK am I right? @User

Hi everyone, I am trying to install open_pdks but I get an error when I run make after doing ./configure --enable-sky130-pdk=/home/darunix/GitSandboxes/open_pdks/open_pdks/sources/skywater-pdk/libraries/ Here is the error:

So how is Xyce vs ngspice ? I know the former is a pain to build, but is it much faster ?

Hi, How does the sizing work for NMOS and PMOS devices? I originally thought the sky130 meant the smallest channel length would be 130nm, but it seems that devices like nfet_01v8 have a default L of 0.15 in xschem. Is that shortest length, or is it okay to change it to 130nm?

Is there any way to delete a label in magic without deleting the paint layer underneath? Right now I've been using the undo function or trying to delete the label and then redrawing the paint underneath but it takes a lot of time

Hi, I have installed open_pdks but when I launch xschem I get missing symbols (see attached). I have run the open_pdks install with and without --enable-xschem-sky130 but issue is still there. What step could I be doing wrong?

Are there near plans to fix the skywater analog models? The models behave poorly in moderate/weak inversion. The snapshot below is an example.

Hi all, Im trying to learn to work with openlane. I coded a simple updown counter. I stucked in generating PDN step. Here are my config and log files below. How can I solve this situation? [ERROR PDN-0185] Insufficient width to add straps on layer met4 in grid "stdcell_grid". My config file:

# User config
set ::env(DESIGN_NAME) updown_counter

# Change if needed
set ::env(VERILOG_FILES) [glob $::env(DESIGN_DIR)/src/*.v]

# Fill this
set ::env(CLOCK_PERIOD) "10.0"
set ::env(CLOCK_PORT) "CLK_i"
set ::env(PL_TARGET_DENSITY) "0.7"
set ::env(CELL_PAD) 0.7
set ::env(DIE_AREA) "0 0 100 100"

set ::env(FP_PDN_AUTO_ADJUST) 0
set ::env(FP_PDN_VOFFSET) "5.0"
set ::env(FP_PDN_HOFFSET) "5.0"

#set ::env(FP_PDN_ENABLE_MACROS_GRID) 0

set ::env(FP_PDN_IRDROP) 1

set filename $::env(DESIGN_DIR)/$::env(PDK)_$::env(STD_CELL_LIBRARY)_config.tcl
if { [file exists $filename] == 1} {
	source $filename
}

logs:

OpenROAD 0b8b7ae255f8fbbbefa57d443949b84e73eed757 
This program is licensed under the BSD-3 license. See the LICENSE file for details.
Components of this program may be licensed under more restrictive licenses which must be honored.
[INFO ODB-0222] Reading LEF file: /openlane/designs/mydesigns/1_UpDown_Counter_4bit/runs/RUN_2022.06.17_14.09.55/tmp/merged.unpadded.nom.lef
[INFO ODB-0223]     Created 13 technology layers
[INFO ODB-0224]     Created 25 technology vias
[INFO ODB-0225]     Created 441 library cells
[INFO ODB-0226] Finished LEF file:  /openlane/designs/mydesigns/1_UpDown_Counter_4bit/runs/RUN_2022.06.17_14.09.55/tmp/merged.unpadded.nom.lef
[INFO ODB-0127] Reading DEF file: /openlane/designs/mydesigns/1_UpDown_Counter_4bit/runs/RUN_2022.06.17_14.09.55/results/floorplan/updown_counter.def
[INFO ODB-0128] Design: updown_counter
[INFO ODB-0130]     Created 11 pins.
[INFO ODB-0131]     Created 72 components and 398 component-terminals.
[INFO ODB-0133]     Created 44 nets and 134 connections.
[INFO ODB-0134] Finished DEF file: /openlane/designs/mydesigns/1_UpDown_Counter_4bit/runs/RUN_2022.06.17_14.09.55/results/floorplan/updown_counter.def
[ERROR PDN-0185] Insufficient width to add straps on layer met4 in grid "stdcell_grid".
Error: pdn_cfg.tcl, 127 PDN-0185

While installing XSCHEM , i'm not able to see the symbols (shows missing symbol). What could be the problem here ?