forked from EmoryUniversityTheoreticalBiophysics/SirIsaac
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fitAllParallel.py
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fitAllParallel.py
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# fitAllParallel.py
#
# Bryan Daniels
# 4.4.2016
#
# Data structure for running in parallel fitting over increasing
# amounts of data and multiple conditions.
#
import scipy
import time, copy, os
from SirIsaac.simplePickle import load,save
from SirIsaac.SloppyCellTest import testCcompiling
from SirIsaac.FittingProblemMultipleCondition import *
def directoryPrefix(fileNumString,conditioni,numTimepoints):
return fileNumString+'_fitProbs/N'+str(numTimepoints)+'/condition'+str(conditioni)+'/'
def directoryPrefixNonly(fileNumString,numTimepoints):
return fileNumString+'_fitProbs/N'+str(numTimepoints)+'/'
def createDirectoryStructure(fileNumString,numConditions,numTimepointsList):
os.mkdir(fileNumString+'_fitProbs/')
for numTimepoints in numTimepointsList:
os.mkdir(fileNumString+'_fitProbs/N'+str(numTimepoints))
for i in range(numConditions):
os.mkdir(directoryPrefix(fileNumString,i,numTimepoints))
def paramsDict(fittingProblem):
d = {}
for name in fittingProblem.fittingModelNames:
params = fittingProblem.fittingModelDict[name].getParameters()
d[name] = params
return d
def saveFitProb(fitProb,saveFilename,fileNumString,conditioni,numTimepoints):
dirPrefix = directoryPrefix(fileNumString,conditioni,numTimepoints)
fitProbDict = {numTimepoints: fitProb}
save(fitProbDict,dirPrefix+saveFilename)
def loadFitProb(saveFilename,fileNumString,conditioni,numTimepoints):
dirPrefix = directoryPrefix(fileNumString,conditioni,numTimepoints)
return load(dirPrefix+saveFilename)[numTimepoints]
def loadFitProbData(fileNumString):
try:
fitProbData = load(fileNumString+'_fitProbData.dat')
except (IOError, EOFError):
print "loadFitProbData: WARNING Unable to load fitProbData file."\
"Returning None."
fitProbData = None
return fitProbData
def saveFitProbData(fitProbData,fileNumString):
try:
save(fitProbData,fileNumString+'_fitProbData.dat')
except IOError:
print "saveFitProbData: WARNING Unable to save fitProbData file."
def setLock(fileNumString):
save(1,fileNumString+'_fileLocked.dat')
def removeLock(fileNumString):
os.remove(fileNumString+'_fileLocked.dat')
def waitForUnlocked(fileNumString,maxIter=100):
lockFilename = fileNumString+'_fileLocked.dat'
i = 0
while lockFilename in os.listdir('.'):
print "waitForUnlocked: Waiting for another process to unlock fitProbData file..."
# wait a bit
time.sleep(1.+5.*scipy.rand())
i += 1
if i > maxIter:
raise Exception, "Waiting too long for lock on fitProbData file."
def lockAndLoadFitProbData(fileNumString):
waitForUnlocked(fileNumString)
setLock(fileNumString)
return loadFitProbData(fileNumString)
def saveAndUnlockFitProbData(fitProbData,fileNumString):
saveFitProbData(fitProbData,fileNumString)
removeLock(fileNumString)
def updateFitProbData(fitProb,fileNumString,conditioni,numTimepoints,modelj):
fitProbData = lockAndLoadFitProbData(fileNumString)
if fitProbData is not None:
pDataMultiple = fitProbData[numTimepoints]
pData = pDataMultiple['fitProbDataList'][conditioni]
modelName = pData['fittingModelNames'][modelj]
# insert new data for single condition
pData['logLikelihoodDict'][modelName] = fitProb.logLikelihoodDict[modelName]
pData['fittingStateDict'][modelName] = 'finished'
# insert new data for the given model over all conditions
# if they're all done for that N
if scipy.all( [ p['fittingStateDict'][modelName] == 'finished' \
for p in pDataMultiple['fitProbDataList'] ] ):
llList = [ p['logLikelihoodDict'][modelName] \
for p in pDataMultiple['fitProbDataList'] ]
pDataMultiple['logLikelihoodDict'][modelName] = scipy.sum( llList )
# check if we are also done fitting models for that N
# [stop after seeing stopFittingN models with worse logLikelihood]
orderedLs = []
stopFittingN = pDataMultiple['stopFittingN']
for n in pDataMultiple['fittingModelNames']:
if pDataMultiple['logLikelihoodDict'].has_key(n):
orderedLs.append(pDataMultiple['logLikelihoodDict'][n])
if (len(orderedLs) > stopFittingN):
if max(orderedLs[-stopFittingN:]) < max(orderedLs):
pDataMultiple['fitAllDone'] = True
if len(orderedLs) == len(pDataMultiple['fittingModelNames']):
# every fittingModel has been fit
pDataMultiple['fitAllDone'] = True
saveAndUnlockFitProbData(fitProbData,fileNumString)
# note: getState and setState are somewhat slow due to sorting
def getState(fitProbData,conditioni,numTimepointsi,modelj):
numTimepoints = scipy.sort(fitProbData.keys())[numTimepointsi]
pData = fitProbData[numTimepoints]['fitProbDataList'][conditioni]
modelName = pData['fittingModelNames'][modelj]
return pData['fittingStateDict'][modelName]
# note: getState and setState are somewhat slow due to sorting
def setState(fitProbData,conditioni,numTimepointsi,modelj,state):
numTimepoints = scipy.sort(fitProbData.keys())[numTimepointsi]
pData = fitProbData[numTimepoints]['fitProbDataList'][conditioni]
modelName = pData['fittingModelNames'][modelj]
pData['fittingStateDict'][modelName] = state
def assignWork(fileNumString):
conditioni = None
while conditioni is None: # wait for work to be available
# wait a bit
time.sleep(1.+scipy.rand())
# load current fitProbData
fitProbData = lockAndLoadFitProbData(fileNumString)
if fitProbData is None:
print "assignWork: Error loading fitProbData"
removeLock(fileNumString)
else:
# find unstarted work to be done
conditioni,numTimepointsi,modelj = findWork(fitProbData)
if conditioni is None: removeLock(fileNumString)
# mark work as started
setState(fitProbData,conditioni,numTimepointsi,modelj,'started')
# save updated fitProbData
saveAndUnlockFitProbData(fitProbData,fileNumString)
return conditioni,numTimepointsi,modelj
def findWork(fitProbData):
numTimepointsList = scipy.sort( fitProbData.keys() )
# loop over numTimepoints
for numTimepointsi,numTimepoints in enumerate(numTimepointsList):
pDataMultiple = fitProbData[numTimepoints]
# if there's work to be done for this N
if not pDataMultiple['fitAllDone']:
if numTimepointsi > 0:
smallerPDataMultiple = fitProbData[numTimepointsList[numTimepointsi-1]]
else:
smallerPDataMultiple = None
# pick the first model for which there's work to be done
modelj = 0
modelName = pDataMultiple['fittingModelNames'][modelj]
while pDataMultiple['logLikelihoodDict'].has_key(modelName):
modelj += 1
modelName = pDataMultiple['fittingModelNames'][modelj]
# loop over conditions
for conditioni,pData in enumerate(pDataMultiple['fitProbDataList']):
# if the model fit to less data has already been fit (if applicable)
if (smallerPDataMultiple is None) or \
(smallerPDataMultiple['fitAllDone']) or \
(smallerPDataMultiple['fitProbDataList'][conditioni]\
['fittingStateDict']\
[modelName] == 'finished'):
# and the previous j has been fit (if applicable)
if (modelj == 0) or \
(pData['fittingStateDict'] \
[pData['fittingModelNames'][modelj-1]] == 'finished'):
# and the model hasn't already been started
if pData['fittingStateDict'][modelName] == 'unstarted':
# then this is a model that needs to be fit
return conditioni,numTimepointsi,modelj
print "findWork: No work found."
return None,None,None
def resetFitProbData(fileNumString):
"""
Set all 'started' work to 'unstarted'. (Leave 'finished' alone.)
"""
fitProbData = lockAndLoadFitProbData(fileNumString)
for pMultiple in fitProbData.values():
for p in pMultiple['fitProbDataList']:
for name in p['fittingStateDict'].keys():
if p['fittingStateDict'][name] == 'started':
p['fittingStateDict'][name] = 'unstarted'
saveAndUnlockFitProbData(fitProbData,fileNumString)
def setStopFittingN(fileNumString,stopFittingN,resetFitAllDone=True):
"""
Overwrite stopFittingN values with given value.
resetFitAllDone (True) : If True, set all fitAllDone to False.
If False, leave all fitAllDone alone.
"""
fitProbData = lockAndLoadFitProbData(fileNumString)
for pMultiple in fitProbData.values():
pMultiple['stopFittingN'] = stopFittingN
if resetFitAllDone: pMultiple['fitAllDone'] = False
saveAndUnlockFitProbData(fitProbData,fileNumString)
def countFitProbData(fileNumString,printReport=True,printAll=False):
"""
Print the current status of model fitting.
"""
fitProbData = loadFitProbData(fileNumString)
totalSubsets = len(fitProbData.values())
finishedSubsets = []
finished,started,unstarted = 0,0,0
for numTimepoints in scipy.sort(fitProbData.keys()):
line = str(numTimepoints) + ' '
pMultiple = fitProbData[numTimepoints]
if pMultiple['fitAllDone']:
finishedSubsets.append(numTimepoints)
line += 'done '
else:
line += ' '
subsetUnstarted = True
for p in pMultiple['fitProbDataList']:
indFinished,indStarted = 0,0
for name in p['fittingModelNames']:
s = p['fittingStateDict'][name]
if s == 'finished':
finished += 1
indFinished += 1
subsetUnstarted = False
if s == 'started':
started += 1
indStarted += 1
subsetUnstarted = False
if s == 'unstarted': unstarted += 1
line += str(indFinished)
if indStarted > 0:
line += '('+str(indStarted)+') '
else:
line += ' '
if (not subsetUnstarted) or printAll:
if printReport: print line
if printReport:
print ""
print "Data subsets:"
print " ",len(finishedSubsets),"of",totalSubsets,"finished"
print "Individual models:"
print " ",finished,"finished"
print " ",started,"running"
print " ",unstarted,"unstarted"
else:
return finishedSubsets
def makeFpdLean(fpd):
"""
Modify in place to create a stripped-down version of fpd
that doesn't include the models.
"""
for N in scipy.sort(fpd.keys()):
fp = fpd[N]
for f in fp.fittingProblemList:
f.fittingModelDict = {}
f.fittingModelList = []
# 10.4.2017
def subsetsWithFits(fileNumString,onlyNew=False):
"""
Find data subsets (N) that have models that have been fit to
all conditions.
onlyNew (False) : Optionally include only subsets that have
fits that are not included in the current
combined fitProbs.
"""
fpd = loadFitProbData(fileNumString)
saveFilename = fpd.values()[0]['saveFilename']
Nlist = []
for N in scipy.sort(fpd.keys()):
# find models that have been fit to all conditions
if len(fpd[N]['fitProbDataList']) == 1:
fitModels = fpd[N]['fitProbDataList'][0]['logLikelihoodDict'].keys()
else:
fitModels = scipy.intersect1d([ fp['logLikelihoodDict'].keys() \
for fp in fpd[N]['fittingProblemList'] ])
if onlyNew:
Nfilename = directoryPrefixNonly(fileNumString,N)+'/'+saveFilename
fileExists = os.path.exists(Nfilename)
if not fileExists: # no combined file exists
if len(fitModels) > 0:
Nlist.append(N)
else: # check which fit models are currently included in the saved file
fpMultiple = load(Nfilename)
fitModelsSaved = fpMultiple.logLikelihoodDict.keys()
if len(scipy.intersect1d(fitModels,fitModelsSaved)) < len(fitModels):
Nlist.append(N)
else:
if len(fitModels) > 0:
Nlist.append(N)
return Nlist
def combineFitProbs(fileNumString,saveCombined=True,combinedLean=True,
reset=False):
"""
Combine fittingProblems from multiple conditions saved in the
parallel file structure into a single fittingProblemDict.
Currently only includes data from models that have been fit to
all conditions.
saveCombined (True) : Overwrites any current top-level fitProbDict file
with a combined fitProbDict containing all
numTimepoints. Set to False to minimize memory use.
combinedLean (True) : Combined fpd is saved without models to save memory.
reset (False) : If True, overwrite or delete any existing combined
fitProbDicts. This erases any existing
outOfSampleCost information.
"""
fitProbData = loadFitProbData(fileNumString)
saveFilename = fitProbData.values()[0]['saveFilename']
#save({},saveFilename)
if saveCombined: fpdMultiple = {}
fitSubsets = subsetsWithFits(fileNumString)
subsetsToCombine = subsetsWithFits(fileNumString,onlyNew=not reset)
for numTimepoints in fitSubsets:
Nfilename = directoryPrefixNonly(fileNumString,numTimepoints)+'/'+saveFilename
fileExists = os.path.exists(Nfilename)
if fileExists and reset:
# then an old combined file exists -- erase it to reset
os.remove(Nfilename)
fileExists = False
print "combineFitProbs: Reset removed file for numTimepoints =",numTimepoints
if numTimepoints in subsetsToCombine: # combine
oldOutOfSampleCostDict = {}
if fileExists: # grab any out-of-sample cost data
fpMultiple = load(Nfilename)
if hasattr(fpMultiple,'outOfSampleCostDict'):
oldOutOfSampleCostDict = fpMultiple.outOfSampleCostDict
p = fitProbData[numTimepoints]
fpList = []
for conditioni in range(len(p['fitProbDataList'])):
fp = loadFitProb(saveFilename,fileNumString,conditioni,numTimepoints)
fpList.append(fp)
# make new multiple condition fitting problem by starting
# with an empty fitting problem and inserting the fittingProblemList
saveKey = p['saveKey']
fp.stopFittingN = p['stopFittingN']
fpMultiple = FittingProblemMultipleCondition([],[],saveFilename=None,
saveKey=saveKey,fp0=fp)
fpMultiple.fittingProblemList = fpList
fpMultiple.outOfSampleCostDict = oldOutOfSampleCostDict
# Populate the logLikelihoodDict, etc by running fitAll.
fpMultiple.fitAll(onlyCombine=True)
if saveCombined: fpdMultiple[numTimepoints] = fpMultiple
save(fpMultiple,Nfilename)
print "combineFitProbs: Done with numTimepoints =",numTimepoints
else: # no new fits to combine; just load from file
if saveCombined: fpdMultiple[numTimepoints] = load(Nfilename)
print "combineFitProbs: Done with numTimepoints =",numTimepoints
if saveCombined:
if combinedLean:
makeFpdLean(fpdMultiple)
save(fpdMultiple,saveFilename[:-4]+'_combined.dat')
def dataSubset(fittingData,numDatapoints,seed=345,maxNumIndepParams=None):
"""
By default, add one timepoint for each independent parameter first,
then increase the number of timepoints per independent parameter.
Timepoints are added randomly for each independent parameter.
Independent parameters are added in the order of indepParamsList.
"""
scipy.random.seed(seed)
subset = []
numIndepParams = len(fittingData)
if maxNumIndepParams is None: maxNumIndepParams = numIndepParams
numDatapoints = int(numDatapoints)
for i in range(min(numDatapoints,maxNumIndepParams)):
varNames = scipy.sort( fittingData[i].keys() )
allTimes = scipy.sort( fittingData[i][varNames[0]].keys() )
possibleIndices = range(len(allTimes))
scipy.random.shuffle(possibleIndices)
N = numDatapoints/maxNumIndepParams
if i < numDatapoints%maxNumIndepParams: N += 1
timeIndices = possibleIndices[:N]
times = scipy.array(allTimes)[timeIndices]
s = {}
for var in varNames:
s[var] = dict([(t,fittingData[i][var][t]) for t in times])
subset.append(s)
return subset
def initializeFitAllParallel(fullFittingProblem,fileNumString,
deltaNumDatapoints=2,maxTimesPerIndepParam=None,timeOrderSeed=123,
verbose=True,numIndepParams=None):
"""
Creates data structure on disk for keeping track of fitting over increasing
amounts of data and multiple conditions.
After initialization, use runFitAllParallelWorker to run fitting.
Multiple workers can be run at the same time.
By default, add one timepoint for each independent parameter first,
then increase the number of timepoints per independent parameter.
Timepoints are added randomly for each independent parameter.
Independent parameters are added in the order of indepParamsList.
The amount of data is always kept equal across each condition.
If the length of indepParamsList or the number of timepoints per
independent parameter varies in the original, the total amount of
data used will be (#conditions)x(minimum number of indepParams per
condition)x(minimum number of timepoints per indepParam)
(that is, NOT ALL DATA WILL BE USED).
fullFittingProblem can be an instance of a FittingProblem or a
FittingProblemMultipleCondition.
deltaNumDatapoints (2) : The change in the number of datapoints
(per condition) between successive fits.
maxTimesPerIndepParam (None): The maximum number of timepoints used
per independent parameter.
numIndepParams (None) : Number of independent parameter
combinations (trials) to use in-sample per
condition. Defaults to the minimum
number available over conditions.
"""
# (only one fittingProblem if there are not multiple conditions)
fittingProblemList = getattr(fullFittingProblem,
'fittingProblemList',
[fullFittingProblem])
if fullFittingProblem.saveFilename is not None:
configString = fullFittingProblem.saveFilename[4:-4]
else:
configString = ''
# The length of fittingProblemList[0].fittingData is len(indepParamsList).
# N is the number of datapoints per condition.
# calculate maxN, the total number of datapoints per condition
numIndepParamsList,numTimepointsList = [],[]
for fittingProblem in fittingProblemList:
numIndepParamsList.append(len(fittingProblem.fittingData))
for d in fittingProblem.fittingData:
numTimepointsList.append(len(d.values()[0]))
if numIndepParams is None:
numIndepParams = min(numIndepParamsList)
elif numIndepParams > min(numIndepParamsList):
raise Exception
minNumTimepoints = min(numTimepointsList)
if maxTimesPerIndepParam is not None:
minNumTimepoints = min(minNumTimepoints,maxTimesPerIndepParam)
maxN = numIndepParams*minNumTimepoints
Nlist = range(deltaNumDatapoints,maxN,deltaNumDatapoints)
Nlist = Nlist + [maxN]
createDirectoryStructure(fileNumString,len(fittingProblemList),Nlist)
# () With each increasing amount of data, make a copy of the fullFittingProblem
# that includes only that data.
fitProbData = {}
for N in Nlist:
fitProbDataList = []
for i,fittingProblem in enumerate(fittingProblemList):
fittingData = fittingProblem.fittingData
fittingDataSubset = dataSubset(fittingData,N,seed=timeOrderSeed+i,
maxNumIndepParams=numIndepParams)
indepParamsListSubset = \
fittingProblem.indepParamsList[:len(fittingDataSubset)]
newFittingProblem = copy.deepcopy(fittingProblem)
newFittingProblem.setData(fittingDataSubset,
indepParamsListSubset,
newFittingProblem.indepParamNames)
newFittingProblem.saveKey = N
#fittingProblemListNew.append(newFittingProblem)
# store each full fittingProblem in separate file
fitProbDict = { N: newFittingProblem }
dirPrefix = directoryPrefix(fileNumString,i,N)
save(fitProbDict,dirPrefix+fileNumString+configString+'.dat')
# in fitProbData, store only info necessary to decide which
# fittingProblem to work on next
fitProb = newFittingProblem
fittingStateDictInitial = \
dict( [ (name,'unstarted') for name in fitProb.fittingModelNames ])
pData = {'logLikelihoodDict': fitProb.logLikelihoodDict,
'fittingStateDict': fittingStateDictInitial,
'fittingModelNames': fitProb.fittingModelNames,
'stopFittingN': fitProb.stopFittingN,
'saveFilename': fitProb.saveFilename,
'saveKey': N,
}
fitProbDataList.append(pData)
p = fullFittingProblem
cp = copy.deepcopy
pDataMultiple = {'logLikelihoodDict': cp(p.logLikelihoodDict),
'fitAllDone': cp(p.fitAllDone),
'fittingModelNames': cp(p.fittingModelNames),
'fitProbDataList': cp(fitProbDataList),
'stopFittingN': cp(p.stopFittingN),
'saveFilename': cp(p.saveFilename),
'saveKey': cp(p.saveKey),
}
fitProbData[N] = pDataMultiple
save(fitProbData,fileNumString+'_fitProbData.dat')
if verbose:
print "initializeFitAllParallel: Done initializing N =", N
def runFitAllParallelWorker(fileNumString,endTime=None,verbose=True):
"""
Each worker node runs this function to look for and perform work.
endTime (None) : Stop work if endTime hours (wall time)
have elapsed when completing a work unit.
If None, continue indefinitely.
"""
# check that the fitProbData file exists
if not fileNumString+"_fitProbData.dat" in os.listdir('.'):
raise Exception, "fitProbData database file not found: "+str(fitProbDatFilename)
# 9.24.2013 make sure SloppyCell C compiling is working
if not testCcompiling():
raise Exception, "SloppyCell C compiling not working."
if endTime is None: endTime = scipy.inf
startWallTime = time.time()
elapsedTimeHours = 0
while elapsedTimeHours < endTime:
fitProbData = loadFitProbData(fileNumString)
saveFilename = fitProbData.values()[0]['saveFilename']
numTimepointsList = scipy.sort(fitProbData.keys())
# () find a (condition,Np,model) triplet to work on
conditioni,numTimepointsi,modelj = assignWork(fileNumString)
numTimepoints = numTimepointsList[numTimepointsi]
fitProb = loadFitProb(saveFilename,fileNumString,conditioni,numTimepoints)
if verbose:
print "runFitAllParallelWorker: Assigned work: condition",conditioni,\
", numTimepoints",numTimepoints,", model index",modelj
# set up smallerBestSeenParams
if (numTimepointsi > 0) and \
(getState(fitProbData,conditioni,numTimepointsi-1,modelj) == 'finished'):
smallerFitProb = loadFitProb(saveFilename,fileNumString,conditioni,
numTimepointsList[numTimepointsi-1])
fitProb.smallerBestParamsDict = paramsDict(smallerFitProb)
# fit the single model
fitProb.fitAll(maxNumFit=modelj+1)
# save the result in the individual fitProbDict file
saveFitProb(fitProb,saveFilename,fileNumString,conditioni,numTimepoints)
# save the result in the more general fitProbData file
updateFitProbData(fitProb,fileNumString,conditioni,numTimepoints,modelj)
if verbose:
print "runFitAllParallelWorker: Finished work."
elapsedTimeHours = (time.time() - startWallTime)/3600.