python.trfMPTools Namespace Reference

Functions
	detectAthenaMPProcs (argdict={}, currentSubstep='', legacyThreadingRelease=False)
	Detect if AthenaMP has been requested.
	athenaMPOutputHandler (athenaMPFileReport, athenaMPWorkerTopDir, dataDictionary, athenaMPworkers, skipFileChecks=False, argdict={})
	Handle AthenaMP outputs, updating argFile instances to real.
	athenaMPoutputsLinkAndUpdate (newFullFilenames, fileArg)

Variables
str	__version__ = '$Revision'
	msg = logging.getLogger(__name__)

Function Documentation

athenaMPOutputHandler()

python.trfMPTools.athenaMPOutputHandler	(		athenaMPFileReport,
			athenaMPWorkerTopDir,
			dataDictionary,
			athenaMPworkers,
			skipFileChecks = False,
			argdict = {} )

Handle AthenaMP outputs, updating argFile instances to real.

Parameters

athenaMPFileReport	XML file with outputs that AthenaMP knew about
athenaMPWorkerTopDir	Subdirectory with AthenaMP worker run directories
dataDictionary	This substep's data dictionary, allowing all files to be updated to the appropriate AthenaMP worker files
athenaMPworkers	Number of AthenaMP workers
skipFileChecks	Switches off checks on output files

Returns

None; side effect is the update of the dataDictionary

Definition at line 70 of file trfMPTools.py.

def athenaMPOutputHandler(athenaMPFileReport, athenaMPWorkerTopDir, dataDictionary, athenaMPworkers, skipFileChecks = False, argdict = {}):
    msg.debug("MP output handler called for report {0} and workers in {1}, data types {2}".format(athenaMPFileReport, athenaMPWorkerTopDir, list(dataDictionary)))
    outputHasBeenHandled = dict([ (dataType, False) for dataType in dataDictionary if dataDictionary[dataType] ])
 
    # if sharedWriter mode is active ignore athenaMPFileReport
    sharedWriter=False
    if 'sharedWriter' in argdict and argdict['sharedWriter'].value:
        sharedWriter=True
        skipFileChecks=True
 
    if not sharedWriter:
        # First, see what AthenaMP told us
        mpOutputs = ElementTree.ElementTree()
        try:
            mpOutputs.parse(athenaMPFileReport)
        except IOError:
            raise trfExceptions.TransformExecutionException(trfExit.nameToCode("TRF_OUTPUT_FILE_ERROR"), "Missing AthenaMP outputs file {0} (probably athena crashed)".format(athenaMPFileReport))
        for filesElement in mpOutputs.getroot().iter(tag='Files'):
            msg.debug('Examining element {0} with attributes {1}'.format(filesElement, filesElement.attrib))
            originalArg = None 
            startName = filesElement.attrib['OriginalName']
            for dataType, fileArg in dataDictionary.items():
                if fileArg.value[0] == startName:
                    originalArg = fileArg
                    outputHasBeenHandled[dataType] = True
                    break
            if originalArg is None:
                msg.warning('Found AthenaMP output with name {0}, but no matching transform argument'.format(startName))
                continue
        
            msg.debug('Found matching argument {0}'.format(originalArg))
            fileNameList = []
            for fileElement in filesElement.iter(tag='File'):
                msg.debug('Examining element {0} with attributes {1}'.format(fileElement, fileElement.attrib))
                fileNameList.append(path.relpath(fileElement.attrib['name']))
 
            athenaMPoutputsLinkAndUpdate(fileNameList, fileArg)
 
    # Now look for additional outputs that have not yet been handled
    if len([ dataType for dataType in outputHasBeenHandled if outputHasBeenHandled[dataType] is False]):
        # OK, we have something we need to search for; cache the dirwalk here
        MPdirWalk = [ dirEntry for dirEntry in os.walk(athenaMPWorkerTopDir) ]
 
        for dataType, fileArg in dataDictionary.items():
            if outputHasBeenHandled[dataType]:
                continue
            if fileArg.io == "input":
                continue
            msg.info("Searching MP worker directories for {0}".format(dataType))
            startName = fileArg.value[0]
            fileNameList = []
            for entry in MPdirWalk:
                if "evt_count" in entry[0]:
                    continue
                if "range_scatterer" in entry[0]:
                    continue
                # N.B. AthenaMP may have made the output name unique for us, so 
                # we need to treat the original name as a prefix
                possibleOutputs = [ fname for fname in entry[2] if fname.startswith(startName) ]
                if len(possibleOutputs) == 0:
                    continue
                elif len(possibleOutputs) == 1:
                    fileNameList.append(path.join(entry[0], possibleOutputs[0]))
                elif skipFileChecks:
                    pass
                else:
                    raise trfExceptions.TransformExecutionException(trfExit.nameToCode("TRF_OUTPUT_FILE_ERROR"), "Found multiple matching outputs for datatype {0} in {1}: {2}".format(dataType, entry[0], possibleOutputs))
            if skipFileChecks:
                pass
            elif len(fileNameList) != athenaMPworkers:
                raise trfExceptions.TransformExecutionException(trfExit.nameToCode("TRF_OUTPUT_FILE_ERROR"), "Found {0} output files for {1}, expected {2} (found: {3})".format(len(fileNameList), dataType, athenaMPworkers, fileNameList))
 
            # Found expected number of files - good!
            athenaMPoutputsLinkAndUpdate(fileNameList, fileArg) 
 
 

athenaMPoutputsLinkAndUpdate()

python.trfMPTools.athenaMPoutputsLinkAndUpdate	(		newFullFilenames,
			fileArg )

Definition at line 146 of file trfMPTools.py.

def athenaMPoutputsLinkAndUpdate(newFullFilenames, fileArg):
    # Any files we link are numbered from 1, because we always set
    # the filename given to athena has _000 as a suffix so that the
    # mother process' file can be used without linking
    fileIndex = 1
    linkedNameList = []
    newFilenameValue = []
    for fname in newFullFilenames:
        if path.dirname(fname) == "":
            linkedNameList.append(None)
            newFilenameValue.append(fname)
        else:
            linkName = "{0}{1:03d}".format(path.basename(fname).rstrip('0'), fileIndex)
            linkedNameList.append(linkName)
            newFilenameValue.append(linkName)
            fileIndex += 1
            
    for linkname, fname in zip(linkedNameList, newFullFilenames):
        if linkname:
            if len(newFullFilenames) == 1:
                if path.exists(fname):
                    try:
                        os.rename(fname, fileArg.originalName)
                    except OSError as e:
                        raise trfExceptions.TransformExecutionException(trfExit.nameToCode("TRF_OUTPUT_FILE_ERROR"), "Failed to move {0} to {1}: {2}".format(fname, fileArg.originalName, e))
                elif not path.exists(fileArg.originalName):
                    raise trfExceptions.TransformExecutionException(trfExit.nameToCode("TRF_OUTPUT_FILE_ERROR"), "Neither {0} nor {1} exists".format(fname, fileArg.originalName))
                newFilenameValue[0] = fileArg.originalName
            else:
                 try:
                     if path.lexists(linkname):
                         os.unlink(linkname)
                     os.symlink(fname, linkname)
                 except OSError as e:  
                     raise trfExceptions.TransformExecutionException(trfExit.nameToCode("TRF_OUTPUT_FILE_ERROR"), "Failed to link {0} to {1}: {2}".format(fname, linkname, e))
 
    fileArg.multipleOK = True
    fileArg.value = newFilenameValue
    msg.debug('MP output argument updated to {0}'.format(fileArg))
    

detectAthenaMPProcs()

python.trfMPTools.detectAthenaMPProcs	(		argdict = {},
			currentSubstep = '',
			legacyThreadingRelease = False )

Detect if AthenaMP has been requested.

Parameters

argdict

Argument dictionary, used to access athenaopts for the job

Returns

Integer with the number of processes, N.B. 0 means non-MP serial mode

Definition at line 27 of file trfMPTools.py.

def detectAthenaMPProcs(argdict = {}, currentSubstep = '', legacyThreadingRelease = False):
    athenaMPProcs = 0
    currentSubstep = commonExecutorStepName(currentSubstep)
    
    # Try and detect if any AthenaMP has been enabled 
    try:
        if 'athenaopts' in argdict:
            for substep in argdict['athenaopts'].value:
                if substep == 'all' or substep == currentSubstep:
                    procArg = [opt.replace("--nprocs=", "") for opt in argdict['athenaopts'].value[substep] if '--nprocs' in opt]
                    if len(procArg) == 0:
                        athenaMPProcs = 0
                    elif len(procArg) == 1:
                        if 'multiprocess' in argdict and substep == 'all':
                            raise ValueError("Detected conflicting methods to configure AthenaMP: --multiprocess and --nprocs=N (via athenaopts). Only one method must be used")
                        athenaMPProcs = int(procArg[0])
                        if athenaMPProcs < -1:
                            raise ValueError("--nprocs was set to a value less than -1")
                    else:
                        raise ValueError("--nprocs was set more than once in 'athenaopts'")
                    if athenaMPProcs > 0:
                        msg.info('AthenaMP detected from "nprocs" setting with {0} workers for substep {1}'.format(athenaMPProcs,substep))
        if (athenaMPProcs == 0 and
            'ATHENA_CORE_NUMBER' in os.environ and
            (('multiprocess' in argdict and argdict['multiprocess'].value) or legacyThreadingRelease)):
            athenaMPProcs = int(os.environ['ATHENA_CORE_NUMBER'])
            if athenaMPProcs < -1:
                raise ValueError("ATHENA_CORE_NUMBER value was less than -1")
            msg.info('AthenaMP detected from ATHENA_CORE_NUMBER with {0} workers'.format(athenaMPProcs))
    except ValueError as errMsg:
        myError = 'Problem discovering AthenaMP setup: {0}'.format(errMsg)
        raise trfExceptions.TransformExecutionException(trfExit.nameToCode('TRF_EXEC_SETUP_FAIL'), myError)
 
    return athenaMPProcs
 

Variable Documentation

__version__

str python.trfMPTools.__version__ = '$Revision'

private

Definition at line 9 of file trfMPTools.py.

msg

python.trfMPTools.msg = logging.getLogger(__name__)

Definition at line 15 of file trfMPTools.py.