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Disable gear integration in ngspice. Not sure it is necessary anymore and it is quite slow.

This commit is contained in:
Matt Guthaus 2018-02-07 14:20:15 -08:00
parent a2bf66b063
commit 5dacafc698
1 changed files with 6 additions and 6 deletions
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12
compiler/characterizer/stimuli.py
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@ -208,12 +208,12 @@ def write_control(stim_file, end_time):
""" Write the control cards to run and end the simulation """
# UIC is needed for ngspice to converge
stim_file.write(".TRAN 5p {0}n UIC\n".format(end_time))
if OPTS.spice_name == "ngspice":
# ngspice sometimes has convergence problems if not using gear method
# which is more accurate, but slower than the default trapezoid method
stim_file.write(".OPTIONS POST=1 RUNLVL=4 PROBE method=gear\n")
else:
stim_file.write(".OPTIONS POST=1 RUNLVL=4 PROBE\n")
# if OPTS.spice_name == "ngspice":
# # ngspice sometimes has convergence problems if not using gear method
# # which is more accurate, but slower than the default trapezoid method
# stim_file.write(".OPTIONS POST=1 RUNLVL=4 PROBE method=gear\n")
# else:
stim_file.write(".OPTIONS POST=1 RUNLVL=4 PROBE\n")
# create plots for all signals
stim_file.write("* probe is used for hspice/xa, while plot is used in ngspice\n")