python.LumiBlobConversion Namespace Reference

Functions
	blob_read (self, size=-1)
	bConvert (b, nbyte=1)
	bConvertList (b, nbyte=1, nval=1)
	unpackBunchGroup (blob, bgrp=1)
	unpackBunchGroupList (blob, bgrp=[1])
	unpackBCIDMask (blob, nb1, nb2, nlumi)
	unpackRun2BCIDMask (blob, nb1, nb2, nlumi)
	unpackRun1BCIDMask (blob, nb1, nb2, nlumi)
	unpackBCIDValues (blob, mask=[], normValue=1)
	unpackBunches (blob, mask=[])
	unpackLiveFraction (trigPayload, priority='high')

Variables
	read
	pos = endpos

Function Documentation

bConvert()

bConvert	(		b,
			nbyte = 1 )

Definition at line 24 of file LumiBlobConversion.py.

def bConvert(b, nbyte=1):
    # routine to store an unsigned int (1, 2, 4 or 8 byte) in a blob
    packopt=dict([[1,'B'],[2,'H'],[4,'f'],[8,'d']])
    if nbyte in packopt:
        # print 'bConvert - b:[', b[0:nbyte], '] nbyte:', nbyte, ' fmt:', packopt[nbyte], type(b)
        ival=struct.unpack(packopt[nbyte], b[0:nbyte])
    else:
        print('bConvert: Unrecognized pack option')
        sys.exit()
 
    return ival[0]
 
# Optional arguemnt to nval to specify number of values to read

bConvertList()

bConvertList	(		b,
			nbyte = 1,
			nval = 1 )

Definition at line 37 of file LumiBlobConversion.py.

def bConvertList(b, nbyte=1, nval=1):
    # routine to store an unsigned int (1, 2, 4 or 8 byte) in a blob
    packopt=dict([[1,'B'],[2,'H'],[4,'f'],[8,'d']])
    if nbyte in packopt:
        # print 'bConvert - b:[', b[0:nbyte], '] nbyte:', nbyte, ' fmt:', packopt[nbyte], type(b)
        fmt = '%d%s' % (nval, packopt[nbyte])
        ival=struct.unpack(fmt, b[0:nval*nbyte])
    else:
        print('bConvertList: Unrecognized pack option')
        sys.exit()
 
    return list(ival)
 
# Unpack bunch group bgrp.  By default, bgrp=1 is the physics bunch group. 

blob_read()

blob_read	(		self,
			size = -1 )

Definition at line 10 of file LumiBlobConversion.py.

def blob_read(self, size = -1):
    if size < 0:
        endpos = self.size()
    else:
        endpos = self.pos + size
    beginpos = self.pos
    self.pos = endpos
    buf = self.startingAddress()
    buf.SetSize(self.size())
    return buf[beginpos:endpos]
 
# add the new functions

unpackBCIDMask()

unpackBCIDMask	(		blob,
			nb1,
			nb2,
			nlumi )

Definition at line 101 of file LumiBlobConversion.py.

def unpackBCIDMask(blob,nb1,nb2,nlumi):
 
    bloblength = blob.size()
 
    if bloblength == 3564:
        return unpackRun2BCIDMask(blob,nb1,nb2,nlumi)
    else:
        return unpackRun1BCIDMask(blob,nb1,nb2,nlumi)
 
# routine to unpack the BCID mask stored in COOL
# This is the run2 version

unpackBCIDValues()

unpackBCIDValues	(		blob,
			mask = [],
			normValue = 1 )

Definition at line 181 of file LumiBlobConversion.py.

def unpackBCIDValues(blob, mask=[], normValue=1):
 
    bss, bcidVec, lvec = unpackBunches(blob, mask)
    
    if bss>0:
      if not (len(bcidVec)==len(lvec)):
        print('unpackBCIDValues - length mismatch: len(bcidVec)=', len(bcidVec), 'len(lvec)=', len(lvec))
        sys.exit()
        
      bLumi=[]
      for i in range(len(bcidVec)):
        if bss<4:
          bLumi.append(lvec[i]*normValue/pow(100,bss))
        else:
          bLumi.append(lvec[i])
 
      #for i in range(len(bcidVec)):
      #    print 'BCID:', bcidVec[i], 'Raw:', bLumi[i]
          
      return bcidVec,bLumi
 
    else:
      return [],[]
    

unpackBunches()

unpackBunches	(		blob,
			mask = [] )

Definition at line 205 of file LumiBlobConversion.py.

def unpackBunches(blob,mask=[]):
    # routine to unpack Intensity/Luminosity info stored in COOL
    # the mask given as input has to match the quantity to be
    # unpacked (beam1, beam2, beamsand for B1, B2 intensities and
    # luminosities, respectively)
 
    if blob.size() == 0:
        return 0,[],[]
    
    blobCopy = blob.read()
    blobCounter = 0
    try:
        b = blobCopy[blobCounter:blobCounter+1]
        blobCounter += 1
        flag=bConvert(b)
        bss=(flag%100)/10
        smod=flag%10
        # print 'Storage mode for',str, 'is', smod, 'with bss=', bss
            
        if smod==2:
            b = blobCopy[blobCounter:blobCounter+2]
            blobCounter += 2
            vlen=bConvert(b, 2)
            #print 'Bunch vector has length ',vlen
            bcidVec=[]
            bcidVec = bConvertList(blobCopy[blobCounter:], 2, vlen)
            blobCounter += 2*vlen
            # for i in range(vlen):
            #     valb = blobCopy[blobCounter:blobCounter+2]
            #     blobCounter += 2
            #     val=struct.unpack('H', valb)
            #     bcidVec.append(val)
            
        elif smod==0:
            # Make sure this is a list, and sorted (can pass set for example)
            bcidVec=list(mask)
            bcidVec.sort()
            vlen=len(mask)
        elif smod==3:
            print('storage mode 3 not implemented in unpackBunches')
            sys.exit()
        elif smod==1:
            bcidVec=[i for i in range(3564)]
            vlen=3564
        else:
            print('Unknown storage mode ',smod)
            sys.exit()
        valueVec=[]
 
        valueVec = bConvertList(blobCopy[blobCounter:], bss, vlen)
#         for i in range(vlen):
#             valb = blobCopy[blobCounter:blobCounter+bss]
#             blobCounter += bss
#             val=bConvert(valb,bss)
#             valueVec.append(val)
 
        return bss,bcidVec,valueVec
 
    except RuntimeError as e:
        print(e)
        return 0,[],[]
                                  
# Unpack live fraction into vector keyed by bcid-1
# Takes payload of /TRIGGER/LUMI/PerBcidDeadtime folder

unpackBunchGroup()

unpackBunchGroup	(		blob,
			bgrp = 1 )

Definition at line 51 of file LumiBlobConversion.py.

def unpackBunchGroup(blob, bgrp=1):
    physBG = []
    if blob.size() == 0: return
    
    blobCopy = blob.read()
    mask = (1 << int(bgrp))
    
    ivallist = bConvertList(blobCopy, 1, 3564)
    for i in range(3564):
        if ivallist[i] & mask:
            physBG.append(i)
 
#     blobCounter = 0
#     for i in range(3564):
#         try:
#             b = blobCopy[blobCounter:blobCounter+1]
#             blobCounter += 1
#             ival = struct.unpack('B', b)
#             #s = struct.unpack('B', b)
#             #ival = bConvert(s)
#         except Exception, e:
#             print e
#             ival = 0
#         if (ival>>1) & 1 == 1:
#             physBG.append(i)
 
    return physBG
            
# Unpack bunch group bgrp.  By default, bgrp=1 is the physics bunch group. 

unpackBunchGroupList()

unpackBunchGroupList	(		blob,
			bgrp = [1] )

Definition at line 80 of file LumiBlobConversion.py.

def unpackBunchGroupList(blob, bgrp=[1]):
    physBG = dict()
    mask = dict()
    
    if blob.size() == 0: return
    
    blobCopy = blob.read()
 
    for id in bgrp:
        mask[id] = (1 << int(id))
        physBG[id] = []
        
    ivallist = bConvertList(blobCopy, 1, 3564)
    for i in range(3564):
        for id in bgrp:
            if ivallist[i] & mask[id]:
                physBG[id].append(i)
 
    return physBG
 
# Generic routine to unpack BCID mask

unpackLiveFraction()

unpackLiveFraction	(		trigPayload,
			priority = 'high' )

Definition at line 269 of file LumiBlobConversion.py.

def unpackLiveFraction(trigPayload, priority = 'high'):
 
    liveVec = array.array('f', 3564*[0.])
    
    if priority == 'high':
        blob = trigPayload['HighPriority']
    elif priority == 'low':
        blob = trigPayload['LowPriority']
    else:
        print('unpackLiveFraction - unknown priority requested %s', str(priority))
        return liveVec
    
    bloblength = blob.size()
 
    # Due to a bug, the blob was sometimes written at 3654 rather than desired 3564
    # More bugs, use anything long enough 
    if bloblength < 3*3564: #!= 3*3654 and bloblength != 3*3564:
        # Corrupt, don't trust anything
        print('unpackLiveFraction found blob length %d!' % bloblength)
        return liveVec
 
    blobCopy = blob.read()
    # blobCounter = 0
 
    # No counts, no work to do
    turnCounter = trigPayload['TurnCounter']
    if not turnCounter > 0:
        return liveVec
 
    # Even if longer blob is present, only care about this range
    
    byte = bConvertList(blobCopy, 1, 3*3564)
    
    for i in range(3564):
 
        busyCounter = byte[3*i] | (byte[3*i+1] << 8) | (byte[3*i+2] << 16)
        
        # byte0 = struct.unpack('B', blobCopy[blobCounter:blobCounter+1])
        # blobCounter += 1
        # byte1 = struct.unpack('B', blobCopy[blobCounter:blobCounter+1])
        # blobCounter += 1
        # byte2 = struct.unpack('B', blobCopy[blobCounter:blobCounter+1])
        # blobCounter += 1
        # busyCounter = byte0 | (byte1 << 8) | (byte2 << 16)
        
        liveFrac = 1 - float(busyCounter) / turnCounter
 
        liveVec[i] = liveFrac
 
        # print 'BCID: %d Busy: %d Turn: %d Live: %f' % (i+1, busyCounter, turnCounter, liveFrac)
 
    return liveVec
 

unpackRun1BCIDMask()

unpackRun1BCIDMask	(		blob,
			nb1,
			nb2,
			nlumi )

Definition at line 137 of file LumiBlobConversion.py.

def unpackRun1BCIDMask(blob,nb1,nb2,nlumi):
    beam1=[]
    beam2=[]
    coll=[]
    blobCopy = blob.read()
    beam1 = bConvertList(blobCopy, 2, nb1)
    beam2 = bConvertList(blobCopy[2*nb1:], 2, nb2)
    coll = bConvertList(blobCopy[2*(nb1+nb2):], 2, nlumi)
    #unpackfmt = '%dH' % nb1
    #list(struct.unpack(unpackfmt, blobCopy[0:(2*nb1)]))
    #unpackfmt = '%dH' % nb2
    #beam2 = list(struct.unpack(unpackfmt, blobCopy[(2*nb1):2*(nb1+nb2)]))
    #unpackfmt = '%dH' % nlumi
    #coll = list(struct.unpack(unpackfmt, blobCopy[2*(nb1+nb2):2*(nb1+nb2+nlumi)]))
                 
#    blobCounter = 0
#     for i in range(nb1):
#         b = blobCopy[blobCounter:blobCounter+2]
#         blobCounter += 2
#         val=struct.unpack('H', b)
#         beam1.append(val)
        
#     for i in range(nb2):
#         b = blobCopy[blobCounter:blobCounter+2]
#         blobCounter += 2
#         val=struct.unpack('H', b)
#         beam2.append(val)
 
#     for i in range(nlumi):
#         b = blobCopy[blobCounter:blobCounter+2]
#         blobCounter += 2
#         val=struct.unpack('H', b)
#         coll.append(val)
 
    return beam1,beam2,coll
 
# routine to unpack values (raw lumi or currents) stored as blob in COOL
# blob - COOL blob with per-BCID values
# mask - BCID mask appropriate for quantity being unpacked (i.e.: beam1, collisions, ...)
# normValue - Normalization value from same COOL folder as BLOB (i.e.: B1BunchAverage)
#
# Note, the normValue is only used in certain storage modes.  If you want to renormalize, do this yourself.
# Specifying a different value for the normValue will likely cause unpredictable results.
 

unpackRun2BCIDMask()

unpackRun2BCIDMask	(		blob,
			nb1,
			nb2,
			nlumi )

Definition at line 112 of file LumiBlobConversion.py.

def unpackRun2BCIDMask(blob,nb1,nb2,nlumi):
    beam1=[]
    beam2=[]
    coll=[]
    blobCopy = blob.read()
    rawData = bConvertList(blobCopy, 1, 3564)
 
    for i in range(3564):
        val = rawData[i]
        if val & 0x01:
            beam1.append(i)
        if val & 0x02: 
            beam2.append(i)
        if (val & 0x03) == 0x03:
            coll.append(i)
 
    print('unpackRun2BCIDMask found:')
    print(' Beam1:', beam1)
    print(' Beam2:', beam2)
    print(' Coll: ', coll)
 
    return beam1,beam2,coll
 
# routine to unpack the BCID mask stored in COOL
# This is the run1 version

Variable Documentation

pos

python.LumiBlobConversion.pos = endpos

Definition at line 16 of file LumiBlobConversion.py.

read

python.LumiBlobConversion.read

Definition at line 22 of file LumiBlobConversion.py.