Modify ppaSynth.py to be able to not issue excess number of operations with Pool command. This is due to the original command using the Popen command, whereas, using the subprocess.call command solves this issue. The relieves the python script from issuing a ton of synthesis commands and using up all the licenses

synthDC/ppa/ppaSynth.py

@@ -12,11 +12,11 @@ from ppaAnalyze import synthsfromcsv
 
 def runCommand(module, width, tech, freq):
     command = "make synth DESIGN={} WIDTH={} TECH={} DRIVE=INV FREQ={} MAXOPT=1 MAXCORES=1".format(module, width, tech, freq)
-    subprocess.Popen(command, shell=True)
+    subprocess.call(command, shell=True)
 
 def deleteRedundant(synthsToRun):
     '''removes any previous runs for the current synthesis specifications'''
-    synthStr = "rm -rf runs/ppa_{}_{}_rv32e_{}nm_{}_*"
+    synthStr = "rm -rf runs/{}_{}_rv32e_{}_{}_*"
     for synth in synthsToRun:   
         bashCommand = synthStr.format(*synth)
         outputCPL = subprocess.check_output(['bash','-c', bashCommand])
@@ -46,7 +46,7 @@ def freqModuleSweep(widths, modules, tech):
     return synthsToRun
 
 def filterRedundant(synthsToRun):
-    bashCommand = "find . -path '*runs/ppa*rv32e*' -prune"
+    bashCommand = "find . -path '*runs/*' -prune"
     output = subprocess.check_output(['bash','-c', bashCommand])
     specReg = re.compile('[a-zA-Z0-9]+')
     allSynths = output.decode("utf-8").split('\n')[:-1]
@@ -84,14 +84,15 @@ if __name__ == '__main__':
 	synthsToRun = freqSweep(module, width, tech)
 
     ##### Run a sweep for multiple modules/widths based on best delay found in existing syntheses
-	modules = ['adder', 'comparator']
-	widths = [64, 128] 
+	modules = ['adder', "comparator"]
+	widths = [8, 16, 32, 64, 128]
 	tech = 'sky130'
 	synthsToRun = freqModuleSweep(widths, modules, tech)	
         
     ##### Only do syntheses for which a run doesn't already exist
-	synthsToRun = filterRedundant(synthsToRun)
-	
+	synthsToRun = filterRedundant(synthsToRun)	
 	pool = Pool(processes=25)
 
-pool.starmap(runCommand, synthsToRun)
+pool.starmap(runCommand, synthsToRun)
+pool.close()
+pool.join()