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update README for ppaSynth.py

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James E. Stine 2023-11-10 21:05:42 -06:00
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synthDC/README.md
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@ -5,7 +5,7 @@ This subdirectory contains synthesis scripts for use with Synopsys
scripts/synth.tcl. scripts/synth.tcl.
Example Usage Example Usage
make synth DESIGN=wallypipelinedcore FREQ=500 make synth DESIGN=wallypipelinedcore FREQ=500 CONFIG=rv32e
environment variables environment variables
@ -38,5 +38,25 @@ To run ppa analysis that hones into target frequency, you can type:
python3 ppa/ppaSynth.py from the synthDC directory. This runs a sweep python3 ppa/ppaSynth.py from the synthDC directory. This runs a sweep
across all modules listed at the bottom of the ppaSynth.py file. across all modules listed at the bottom of the ppaSynth.py file.
Two options for running the sweep. The first run runs all modules for
all techs around a given frequency (i.e., freqs). The second option
will run all designs for the specific module based on bestSynths.csv
values. Since the second option is 2nd, it has priority. If the
second set of values is commented out, it will run all widths.
WARNING: The first option may runs lots of runs that could expend all
the licenses available for a license. Therefore, care must be taken
to be sure that enough licenses are available for this first option.
##### Run specific syntheses
widths = [8, 16, 32, 64, 128]
modules = ['mul', 'adder', 'shifter', 'flop', 'comparator', 'binencoder', 'csa', 'mux2', 'mux4', 'mux8']
techs = ['sky90', 'sky130', 'tsmc28', 'tsmc28psyn']
freqs = [5000]
synthsToRun = allCombos(widths, modules, techs, freqs)
##### Run a sweep based on best delay found in existing syntheses
module = 'adder'
width = 32
tech = 'tsmc28psyn'
synthsToRun = freqSweep(module, width, tech)