Created a new script that deals with the problem of parameter
names in the monte carlo parameter files that shadow names of
devices. ngspice does not handle this; this could be an ngspice
error, but the best practice is not to have confusing parameter
names, so the script modifies the names by stripping off the
leading sky130_fd_pr__ from the parameter name so that it no
longer conflicts with the device name.
diff --git a/sky130/custom/scripts/process_params.py b/sky130/custom/scripts/process_params.py
index 64647c4..1c0e44a 100755
--- a/sky130/custom/scripts/process_params.py
+++ b/sky130/custom/scripts/process_params.py
@@ -25,17 +25,6 @@
filelist = []
-# Manual hack---flag all parameters that have the same name as devices.
-# These parameters are unused and must be deleted.
-
-excludelist = ['sky130_fd_pr__nfet_20v0_nvt', 'sky130_fd_pr__nfet_20v0_nvt_iso',
- 'sky130_fd_pr__nfet_20v0', 'sky130_fd_pr__nfet_20v0_iso',
- 'sky130_fd_pr__nfet_20v0_zvt', 'sky130_fd_pr__pfet_20v0',
- 'sky130_fd_pr__nfet_01v8_lvt', 'sky130_fd_pr__special_nfet_pass_lvt',
- 'sky130_fd_pr__nfet_g5v0d16v0', 'sky130_fd_pr__pfet_01v8_mvt',
- 'sky130_fd_pr__pnp_05v5_W0p68L0p68', 'sky130_fd_pr__pfet_01v8',
- 'sky130_fd_pr__pfet_g5v0d16v0']
-
#--------------------------------------------------------------------
# Step 1. Gather variables
#--------------------------------------------------------------------
@@ -68,15 +57,8 @@
if 'vary' in tokens:
if ('dist=gauss' in tokens) or ('gauss' in tokens):
process_param = tokens[2]
- # Issue: There are improper parameters that
- # shadow device names. They are not used and
- # should be detected and elminated.
- if (process_param in excludelist):
- print('Found parameter ' + process_param + ' that shadows a device name.')
- replacement = ''
- else:
- std_dev = float(tokens[-1].split('=')[-1])
- replacement = ' + {}*AGAUSS(0,{!s},1)'.format(pr_switch_param, std_dev)
+ std_dev = float(tokens[-1].split('=')[-1])
+ replacement = ' + {}*AGAUSS(0,{!s},1)'.format(pr_switch_param, std_dev)
process_params.append((process_param, replacement))
infile.close()
@@ -125,12 +107,9 @@
newline = line
for (param, replacement) in process_params:
if ' ' + param + ' ' in newline:
+ newline = newline.strip('\n') + replacement + '\n'
+ print(" Line {}: Found process parameter '{}' and appended '{}'.".format(line_number, param, replacement))
replaced_something = True
- if replacement == '':
- newline = '** ' + newline
- else:
- newline = newline.strip('\n') + replacement + '\n'
- print(" Line {}: Found process parameter '{}' and appended '{}'.".format(line_number, param, replacement))
outfile.write(newline)
else:
outfile.write(line)
