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miniScatterDriver.py
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miniScatterDriver.py
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#!/usr/bin/env python3
"""
This file is part of MiniScatter.
MiniScatter is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
MiniScatter is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with MiniScatter. If not, see <https://www.gnu.org/licenses/>.
"""
import subprocess
import os
import ROOT
import ROOT.TFile, ROOT.TVector
import datetime
def runScatter(simSetup, quiet=False,allOutput=False, logName=None, onlyCommand=False):
"Run a MiniScatter simulation, given the parameters that are described by running './MiniScatter -h'. as the map simSetup."
if quiet and allOutput:
raise AssertionError("Setting both 'quiet' and 'alloutput' makes no sense")
for key in simSetup.keys():
if not key in ("THICK", "MAT", "PRESS", "DIST", "ANG", "TARG_ANG", "WORLDSIZE", "PHYS",\
"PHYS_CUTDIST", "BGMAT", "N", "ENERGY", "ENERGY_FLAT",\
"BEAM", "XOFFSET", "ZOFFSET", "ZOFFSET_BACKTRACK",\
"BEAMANGLE", "COVAR", "BEAM_RCUT", "SEED","OUTNAME", "OUTFOLDER",\
"QUICKMODE", "ANASCATTER", "MINIROOT", "CUTOFF_ENERGYFRACTION",\
"CUTOFF_RADIUS", "EDEP_DZ", "ENG_NBINS", "ANGLIM", "POSLIM","BEAMFILE"):
if key.startswith("MAGNET"):
continue
raise KeyError("Did not expect key {} in the simSetup".format(key))
cmd = ["./MiniScatter"]
if "THICK" in simSetup:
cmd += ["--thick", str(simSetup["THICK"])]
if "MAT" in simSetup:
if "PRESS" in simSetup:
cmd += ["--mat", simSetup["MAT"]+'::'+str(simSetup["PRESS"])]
else:
cmd += ["--mat", simSetup["MAT"]]
else:
if "PRESS" in simSetup:
raise ValueError("Found PRESS="+str(simSetup["PRESS"]) + " but no MAT. This makes no sense.")
if "DIST" in simSetup:
if simSetup["DIST"] == "NONE":
cmd += ["--dist", "NONE"]
elif type(simSetup["DIST"]) == float:
cmd += ["--dist", str(simSetup["DIST"])]
else: # It's a list of distances
distStr = ""
for d in simSetup["DIST"]:
distStr = distStr + str(d) + ":"
distStr = distStr[0:-1]
print("distStr=",distStr)
cmd += ["--dist", distStr]
if "ANG" in simSetup:
cmd += ["--ang", str(simSetup["ANG"])]
if "TARG_ANG" in simSetup:
cmd += ["--targetAngle", str(simSetup["TARG_ANG"])]
if "WORLDSIZE" in simSetup:
cmd += ['--worldsize', str(simSetup["WORLDSIZE"])]
if "PHYS" in simSetup:
cmd += ["--phys", simSetup["PHYS"]]
if "PHYS_CUTDIST" in simSetup:
cmd += ["--physCutoffDist", str(simSetup["PHYS_CUTDIST"])]
if "BGMAT" in simSetup:
cmd += ["--backgroundMaterial", str(simSetup["BGMAT"])]
if "N" in simSetup:
cmd += ["--numEvents", str(simSetup["N"])]
if "ENERGY" in simSetup:
cmd += ["--energy", str(simSetup["ENERGY"])]
if "ENERGY_FLAT" in simSetup:
cmd += ["--energyDistFlat", str(simSetup["ENERGY_FLAT"][0])+':'+str(simSetup["ENERGY_FLAT"][1]) ]
if "BEAM" in simSetup:
cmd += ["--beam", str(simSetup["BEAM"])]
if "XOFFSET" in simSetup:
cmd += ["--xoffset", str(simSetup["XOFFSET"])]
if "ZOFFSET" in simSetup:
if (not "ZOFFSET_BACKTRACK" in simSetup) or (simSetup["ZOFFSET_BACKTRACK"] == False):
cmd += ["--zoffset", str(simSetup["ZOFFSET"])]
elif simSetup["ZOFFSET_BACKTRACK"] == True:
cmd += ["--zoffset", "*"+str(simSetup["ZOFFSET"])]
else:
raise ValueError("ZOFFSET_BACKTRACK=" +\
str(simSetup["ZOFFSET_BACKTRACK"]) +\
" is inconsistent with ZOFFSET="+str(simSetup["ZOFFSET"]))
else:
if "ZOFFSET_BACKTRACK" in simSetup:
raise ValueError("ZOFFSET_BACKTRACK present but not ZOFFSET?")
if "BEAMANGLE" in simSetup:
cmd += ["--beamAngle", str(simSetup["BEAMANGLE"])]
if "COVAR" in simSetup:
if len(simSetup["COVAR"]) == 3:
cmd += ["--covar", str(simSetup["COVAR"][0]) + ":" + str(simSetup["COVAR"][1]) + ":" + str(simSetup["COVAR"][2])]
elif len(simSetup["COVAR"]) == 6:
cmd += ["--covar", str(simSetup["COVAR"][0]) + ":" + str(simSetup["COVAR"][1]) + ":" + str(simSetup["COVAR"][2])+"::" \
+ str(simSetup["COVAR"][3]) + ":" + str(simSetup["COVAR"][4]) + ":" + str(simSetup["COVAR"][5])]
else:
raise ValueError("Expected len(COVAR) == 3 or 6")
if "BEAM_RCUT" in simSetup:
cmd += ["--beamRcut", str(simSetup["BEAM_RCUT"])]
if "BEAMFILE" in simSetup:
cmd += ["--beamFile", str(simSetup["BEAMFILE"])]
if "SEED" in simSetup:
cmd += ["--seed", str(simSetup["SEED"])]
if "OUTNAME" in simSetup:
cmd += ["--outname", simSetup["OUTNAME"]]
if "OUTFOLDER" in simSetup:
cmd += ["--outfolder", simSetup["OUTFOLDER"]]
if "QUICKMODE" in simSetup:
if simSetup["QUICKMODE"] == True:
cmd += ["--quickmode"]
else:
assert simSetup["QUICKMODE"] == False
if "ANASCATTER" in simSetup:
if simSetup["ANASCATTER"] == True:
cmd += ["--anaScatterTest"]
else:
assert simSetup["ANASCATTER"] == False
if "MINIROOT" in simSetup:
if simSetup["MINIROOT"] == True:
cmd += ["--miniroot"]
else:
assert simSetup["MINIROOT"] == False
if "ANASCATTER" in simSetup:
if simSetup["ANASCATTER"] == True:
cmd += ["--anaScatterTest"]
else:
assert simSetup["ANASCATTER"] == False
if "CUTOFF_ENERGYFRACTION" in simSetup:
cmd += ["--cutoffEnergyFraction", str(simSetup["CUTOFF_ENERGYFRACTION"])]
if "CUTOFF_RADIUS" in simSetup:
cmd += ["--cutoffRadius", str(simSetup["CUTOFF_RADIUS"])]
if "EDEP_DZ" in simSetup:
cmd += ["--edepDZ", str(simSetup["EDEP_DZ"])]
if "ENG_NBINS" in simSetup:
cmd += ["--engNbins", str(simSetup["ENG_NBINS"])]
if "POSLIM" in simSetup:
cmd += ["--histPosLim", str(simSetup["POSLIM"])]
if "ANGLIM" in simSetup:
cmd += ["--histAngLim", str(simSetup["ANGLIM"])]
if "MAGNET" in simSetup:
for mag in simSetup["MAGNET"]:
mag_cmd = ""
if "mag_pos_relative" in mag and mag["mag_pos_relative"] == True:
mag_cmd += "*"
mag_cmd += str(float(mag["pos"])) + ":"
mag_cmd += str(mag["type"]) + ":"
mag_cmd += str(float(mag["length"])) + ":"
mag_cmd += str(float(mag["gradient"]))
for k,v in mag["keyval"].items():
mag_cmd += ":" + str(k)+"="+str(v)
cmd += ["--magnet", mag_cmd]
cmdline = ""
for c in cmd:
cmdline += c + " "
runFolder = os.path.dirname(os.path.abspath(__file__))
if logName is None:
logName = os.path.join(runFolder,"MiniScatterLog_" + datetime.datetime.now().isoformat()+".txt")
logFile = open(logName, 'w')
if not quiet:
print ("Running command line: '" + cmdline[:-1] + "'")
if not onlyCommand:
print ("RunFolder = '" + runFolder + "'")
print ("logName = '" + logName + "'")
# runResults = subprocess.run(cmd, close_fds=True, stdout=subprocess.PIPE, cwd=runFolder)
# #print (runResults)
#Inspired by https://stackoverflow.com/questions/52545512/realtime-output-from-a-shell-command-in-jupyter-notebook
process = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, bufsize=1, close_fds=True, cwd=runFolder, universal_newlines=True)
linebuff = ""
spinnerState = None # 0=/, 1=-, 2=\, 3=| (cycle); None: Last printout was an event, so issue a newline not a carriage return
for line in iter(process.stdout.readline, ''):
if allOutput:
print(line.rstrip())
logFile.write(line.rstrip()+"\n")
elif not quiet and not onlyCommand:
# Collect data until we have a whole line,
# then print it if AND ONLY IF it is a progress report.
ls = line.split('\n')
lsl = len(ls)
assert lsl <= 2
linebuff += ls[0]
if len(ls) > 1:
logFile.write(ls[0]+'\n')
logFile.flush()
if linebuff.startswith("Event#"):
if not spinnerState is None:
print('',end='\n')
print(linebuff)
spinnerState = None
else:
if spinnerState is None:
spinnerState = 0
print('',end='\r')
spinnerState = (spinnerState+1) % 4
if spinnerState == 0:
print ('/', end='')
elif spinnerState == 1:
print ('-', end='')
elif spinnerState == 2:
print ("\\", end='')
elif spinnerState == 3:
print ('|', end='')
else:
print("WTF?")
linebuff = ls[1]
process.stdout.close()
returncode = process.wait()
logFile.close()
if not quiet:
print('',end='\n')
print ("Done!")
if returncode != 0:
print("Errors encountered during simulation")
print("Please check logfile '"+logName+"'")
print("Command line: '" +cmdline[:-1] +"'")
raise SimulationError(returncode,logName,cmdline)
def getData(filename="plots/output.root", quiet=False, getRaw=False, getObjects=None):
"""
Collects data from the ROOT file, and optionally returns the file for looping over the ttrees.
If the file is returned, the caller is responsible for closing it.
"""
dataFile = ROOT.TFile(filename,'READ')
#Load TWISS data
twiss = {}
for key in dataFile.GetListOfKeys():
keyName = key.GetName()
if not keyName.endswith("_TWISS"):
continue #Skip this one
xy = None
if '_x_' in keyName:
xy = 'x'
elif '_y_' in keyName:
xy = 'y'
else:
raise AssertionError("Could not determine 'xy' for TwissDet '"+key+"'")
key_short = keyName.replace('_'+xy+'_','')
if '_TWISS' in key_short:
key_short = key_short.replace('_TWISS','')
else:
#Some are named like ..._x_TWISS e.g. init_x_TWISS, and one arm of the "_x_" is already deleted.
key_short = key_short.replace('TWISS','')
if not key_short in twiss:
twiss[key_short] = {}
twissData = dataFile.Get(keyName)
twiss[key_short][xy] = {'eps':twissData[0], 'beta':twissData[1], 'alpha':twissData[2]}
if len(twissData) > 3:
twiss[key_short][xy]['posAve'] = twissData[3]
twiss[key_short][xy]['angAve'] = twissData[4]
if len(twissData) > 4:
twiss[key_short][xy]['posVar'] = twissData[5]
twiss[key_short][xy]['angVar'] = twissData[6]
twiss[key_short][xy]['coVar'] = twissData[7]
#Load the NumPart data
numPart = {}
for key in dataFile.GetListOfKeys():
keyName = key.GetName()
if not keyName.endswith("_ParticleTypes_PDG"):
continue #Skip
keyBase = keyName[0:-18]
if not (dataFile.GetListOfKeys().Contains(keyBase+"_ParticleTypes_numpart")):
raise AssertionError("Found PDG IDs but not numpart for '"+keyBase+"'")
numPart[keyBase] = {}
numPart_PDG = dataFile.Get(keyBase+"_ParticleTypes_PDG")
numPart_num = dataFile.Get(keyBase+"_ParticleTypes_numpart")
for i in range(len(numPart_PDG)):
numPart[keyBase][int(numPart_PDG[i])] = int(numPart_num[i])
#Load the requested objects
objects = None
if getObjects:
objects = {}
for objName in getObjects:
if not dataFile.GetListOfKeys().Contains(objName):
dataFile.ls()
dataFile.Close()
raise KeyError("Object {} not found in file {}".format(objName,filename))
#Clone the object -- the name can be changed later, but make it unique
objects[objName] = dataFile.Get(objName).Clone(objName+"-localClone")
# make it independent of the datafile TFile (histograms only)
try:
objects[objName].SetDirectory(0)
except AttributeError:
pass
if getRaw:
return (twiss, numPart, objects, dataFile)
else:
dataFile.Close()
return(twiss, numPart, objects)
def getData_tryLoad(simSetup, quiet=False, getRaw=False, getObjects=None, tryload=True, allOutput=False):
"""
Checks if the ROOT file given by the parameters in simsetup exists;
if it does then load.
If it does not exist, run the simulation then load.
This is quite practical for e.g. Jupyter, since when using it re-running a notebook
will quickly load already computed data without having to comment out
the call to runScatter().
"""
ROOTfilename = 'output.root'
if "OUTNAME" in simSetup:
ROOTfilename = simSetup["OUTNAME"]+".root"
if "OUTFOLDER" in simSetup:
ROOTfilename = os.path.join(simSetup["OUTFOLDER"],ROOTfilename)
if not os.path.isdir(simSetup["OUTFOLDER"]):
os.mkdir(simSetup["OUTFOLDER"])
else:
runFolder = os.path.dirname(os.path.abspath(__file__))
ROOTfilename = os.path.join(runFolder,"plots",ROOTfilename)
logName = ROOTfilename[:-5]+".txt"
if not os.path.exists(ROOTfilename):
print("Did not find any pre-computed data at '"+ROOTfilename+"', computing now.")
runScatter(simSetup, quiet=quiet, allOutput=allOutput, logName=logName)
elif tryload==False:
if not quiet:
print("TryLoad is False, computing now.")
runScatter(simSetup, quiet=quiet, allOutput=allOutput, logName=logName)
else:
if not quiet:
print("Found a file at '"+ROOTfilename+"', loading!")
return getData(ROOTfilename, quiet=quiet, getRaw=getRaw, getObjects=getObjects)
class SimulationError(Exception):
"Base class for simulation crashes"
def __init__(self,returncode,logName,cmdline):
self.returncode = returncode
self.logName = logName
self.cmdline = cmdline
super().__init__("Simulation crashed with returncode = " + str(self.returncode) + ", see log file '" +self.logName + "' for more info.")
returncode = None
logName = None
returncode = None