precedence.py

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import os, sys, random, string, json
import networkx as nx

from Gaudi.Configuration import INFO
from Configurables import GaudiSequencer, CPUCruncher


def _buildFilePath(filePath):

    if not os.path.exists(filePath):
        __fullFilePath__ = os.path.realpath(os.path.join(os.environ.get('GAUDIHIVEROOT',''), "data", filePath))
        if not os.path.exists(__fullFilePath__):
            print "\nERROR: invalid file path '%s'. It must be either absolute, or relative to '$GAUDIHIVEROOT/data/'." %filePath
            sys.exit(1)
    else:
        __fullFilePath__ = filePath

    return __fullFilePath__

class UniformTimeValue(object):
    """A class to manage uniform algorithm timing"""

    def __init__(self, avgRuntime, varRuntime = 0):

        self.avgRuntime = avgRuntime
        self.varRuntime = varRuntime

    def get(self, algoName = ''):
        """Get time and its variance (in a tuple) for a given algorithm name"""

        return self.avgRuntime, self.varRuntime

class RealTimeValue(object):
    """A class to manage real algorithm timing"""

    def __init__(self, path, defaultTime, factor = 1):
        """
        defaultTime -- run time, assigned to an algorithm if no time is found in provided timing library
                       (and it will also be scaled by the 'factor' argument)
        """

        self.path = os.path.realpath(_buildFilePath(path))
        self.factor = factor
        self.defaultTime = defaultTime # typically 0.05s
        self.varRuntime = 0

        self.file=open(self.path)
        self.timings=json.load(self.file)


    def get(self, algoName = ''):
        """Get time for a given algorithm name"""

        if algoName in self.timings:
            time = float(self.timings[algoName])
        else:
            capAlgoName = algoName[0].upper() + algoName[1:len(algoName)]

            if capAlgoName in self.timings:
                time = float(self.timings[capAlgoName])
            else:
                time = self.defaultTime
                print "WARNING: TimiNg for %s (or %s) not found in the provided library, using default one: %s" %(algoName,capAlgoName,time)

        time = time * self.factor

        return time, self.varRuntime

class UniformBooleanValue(object):

    def __init__(self, value):

        self.value = value

    def get(self):

        return self.value

class RndBiased10BooleanValue(object):
    """
    Provides randomly distributed boolean value with True taking only 10%.
    The distribution has only 276 values and is reproducible, if no pattern re-generation is requested.
    """

    # 276 values, biased as 90% to 10%
    builtinPattern = [True, False, False, True, False, False, False, False, False, False, False, False, False, False, False, False, True, False, False, True, False, False, False, False, False, False, False, False, False, True, False, False, False, False, False, False, False, False, False, False, False, True, False, False, False, False, False, False, False, False, True, False, False, False, False, False, False, False, False, True, False, False, False, False, False, False, False, False, False, False, False, False, False, False, True, False, True, False, True, False, False, False, False, False, False, False, False, True, False, True, False, False, True, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, True, False, False, False, False, False, False, False, False, False, True, False, False, False, False, True, True, False, False, False, False, False, False, False, False, False, False, True, True, False, True, False, False, False, False, False, False, False, False, False, False, True, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, True, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, True, False, False, False, False, False, False, False, False, False, False, False, True, False, False, False, False, False, False, False, False, False, False, False, True, False, False, False, True, False, False, False, False, False, False, False, False, True, False, False, False, False, False, False, False, False, False, False, False, True, False, True]
    pattern = []

    def __init__(self, useBuiltinPattern=True):

        if useBuiltinPattern:
            self.pattern = self.builtinPattern
        else:
            # 278 values, biased approximately as 90% to 10% (276 precedence graph algorithms, plus two algorithms added manually - DstWriter and Framework)
            self.pattern = [False for i in range(249)] + [True for i in range(29)]
            random.shuffle(self.pattern)

        self.generator = self._create_generator(self.pattern)

    def _create_generator(self, pattern):

        for b in pattern:
            yield b

    def get(self):

        return next(self.generator)

    def get_pattern(self):

        return self.pattern


class CruncherSequence(object):
    """Constructs the sequence tree of CPUCrunchers with provided control flow and data flow precedence rules."""

    unique_sequencers=[]
    dupl_seqs={}
    OR_sequencers=[]
    unique_algos=[]
    dupl_algos={}

    unique_data_objects = []

    def __init__(self, timeValue, IOboolValue, sleepFraction, cfgPath, dfgPath, topSequencer, showStat=False, outputLevel = INFO):
        """
        Keyword arguments:
        timeValue -- timeValue object to set algorithm execution time
        IOboolValue -- *BooleanValue object to set whether an algorithm has to experience IO-bound execution
        cfgPath -- relative to $GAUDIHIVEROOT/data path to GRAPHML file with control flow dependencies
        dfgPath -- relative to $GAUDIHIVEROOT/data path to GRAPHML file with data flow dependencies
        showStat -- print out statistics on precedence graph
        """

        self.timeValue = timeValue
        self.IOboolValue = IOboolValue
        self.sleepFraction = sleepFraction

        self.cfg = nx.read_graphml(_buildFilePath(cfgPath))
        self.dfg = nx.read_graphml(_buildFilePath(dfgPath))

        self.outputLevel = outputLevel

        # Generate control flow part
        self.sequencer = self._generate_sequence(topSequencer)

        if showStat:
            import pprint

            print "\n===== Statistics on Algorithms ====="
            print "Total number of algorithm nodes: ", len(self.unique_algos) + sum([self.dupl_algos[i]-1 for i in self.dupl_algos])
            print "Number of unique algorithms: ", len(self.unique_algos)
            print "  -->", len(self.dupl_algos), "of them being re-used with the following distribution: ", [self.dupl_algos[i] for i in self.dupl_algos]
            #pprint.pprint(dupl_algos)

            print "\n===== Statistics on Sequencers ====="
            print "Total number of sequencers: ", len(self.unique_sequencers) + sum([self.dupl_seqs[i]-1 for i in self.dupl_seqs])
            print "Number of unique sequencers: ", len(self.unique_sequencers)
            print "  -->", len(self.dupl_seqs), "of them being re-used with the following distribution: ", [self.dupl_seqs[i] for i in self.dupl_seqs]
            #pprint.pprint(dupl_seqs)
            print "Number of OR-sequencers: ", len(self.OR_sequencers)

            print "\n===== Statistics on DataObjects ====="
            print "Number of unique DataObjects: ", len(self.unique_data_objects)
            #pprint.pprint(self.unique_data_objects)
            print

    def get(self):

        return self.sequencer

    def _declare_data_deps(self, algo_name, algo):
        """ Declare data inputs and outputs for a given algorithm. """

        # Declare data inputs
        for inNode, outNode in self.dfg.in_edges(algo_name):
            dataName = inNode
            if dataName not in self.unique_data_objects:
                self.unique_data_objects.append(dataName)

            if dataName not in algo.inpKeys: algo.inpKeys.append(dataName)

        # Declare data outputs
        for inNode, outNode in self.dfg.out_edges(algo_name):
            dataName = outNode
            if dataName not in self.unique_data_objects:
                self.unique_data_objects.append(dataName)
            
            if dataName not in algo.outKeys: algo.outKeys.append(dataName)


    def _generate_sequence(self, name, seq=None):
        """ Assemble the tree of sequencers. """

        if not seq:
            seq = GaudiSequencer(name, ShortCircuit = False)

        for n in self.cfg[name]:
            if '/' in n:
                algo_type, algo_name = n.split('/')
            else:
                algo_type = 'GaudiAlgorithm'
                algo_name = n

            if algo_type in ['GaudiSequencer', 'AthSequencer', 'ProcessPhase']:
                if algo_name in ['RecoITSeq','RecoOTSeq','RecoTTSeq']: continue

                if n not in self.unique_sequencers:
                    self.unique_sequencers.append(n)
                else:
                    if n not in self.dupl_seqs: self.dupl_seqs[n] = 2
                    else: self.dupl_seqs[n] += 1

                seq_daughter=GaudiSequencer(algo_name, OutputLevel=INFO )
                if self.cfg.node[n].get('ModeOR') == 'True':
                    self.OR_sequencers.append(n)
                    seq_daughter.ModeOR = True
                #if self.cfg.node[n].get('Lazy') == 'False':
                #    print "Non-Lazy - ", n
                seq_daughter.ShortCircuit = False
                if seq_daughter not in seq.Members:
                    seq.Members += [seq_daughter]
                    # iterate deeper
                    self._generate_sequence(n,seq_daughter)
            else:
                #rndname = ''.join(random.choice(string.lowercase) for i in range(5))
                #if algo_name in unique_algos: algo_name = algo_name + "-" + rndname
                if n not in self.unique_algos:
                    self.unique_algos.append(n)
                else:
                    if n not in self.dupl_algos: self.dupl_algos[n] = 2
                    else: self.dupl_algos[n] += 1

                avgRuntime, varRuntime = self.timeValue.get(algo_name)
                algo_daughter = CPUCruncher(algo_name,
                                            OutputLevel = self.outputLevel,
                                            shortCalib = True,
                                            varRuntime = varRuntime,
                                            avgRuntime = avgRuntime,
                                            SleepFraction = self.sleepFraction if self.IOboolValue.get() else 0.)

                self._declare_data_deps(algo_name, algo_daughter)

                if algo_daughter not in seq.Members:
                    seq.Members += [algo_daughter]

        return seq