[Difx-users] Problem in executing "vex2difx" of DiFX-2.5

[Lupin Lin]

To whom will concern my problem,

Since DiFX-2.5 was released, I am now testing the functions with this new version.
I have successfully installed the DiFX-2.5, and I did not see any significant error in installation.

When I performed the vex2difx with the trunk version, the task can smoothly be done.
——
lupin at node01:/data/lupin/test-7000> vex2difx --force -v test.7000.v2d
Note: The vex file has no exper_nominal_start parameter defined in the EXPER section.  Making assumptions...
Note: The vex file has no exper_nominal_stop parameter defined in the EXPER section.  Making assumptions...
1 job groups created:
  Group: scans 124-0542 - 124-0542 = mjd(57877.2375,57877.2375579)
Job test_7000
  mjd(57877.2375,57877.2375579)
  duty cycle = 1
  scans = 124-0542
  Antenna list: G1 G2
  size = 0 bytes

1 job(s) created.
——

But if I switched to DiFX-2.5, I gained an error message and no related calc and input files can be obtained.
——
lupin at node02:/data/lupin/test-7000> vex2difx --force -v -v test.7000.v2d
Checking test.7000.v2d for proper line termination
Checking /data/lupin/test-7000/test.vex.obs for proper line termination
Note: The vex file has no exper_nominal_start parameter defined in the EXPER section.  Making assumptions...
Note: The vex file has no exper_nominal_stop parameter defined in the EXPER section.  Making assumptions...
Vex:
1 sources:
Source M87
  name=M87
  ra=3.27609
  dec=0.216266
1 scans:
Scan 124-0542
  timeRange=mjd(57877.2375,57877.2375579)
  mode=MINE
  source=M87
  size=0 bytes
  G1 range=mjd(57877.2375,57877.2375579)
  G2 range=mjd(57877.2375,57877.2375579)
  G1 enable=1
  G2 enable=1
2 antennas:
Antenna G1
  x=1.50069e+06  dx/dt=0
  y=-1.19174e+06  dy/dt=0
  z=6.06641e+06  dz/dt=0
  posEpoch=0
  axisType=azel
  axisOffset=0
  tcalFrequency=-1
  Clock(57877: -0, -0, 57877)
Antenna G2
  x=1.50069e+06  dx/dt=0
  y=-1.19174e+06  dy/dt=0
  z=6.06641e+06  dz/dt=0
  posEpoch=0
  axisType=azel
  axisOffset=0
  tcalFrequency=-1
  Clock(57877: -0, -0, 57877)
1 modes:
Mode MINE
  Subband[0]=[2.3e+11 Hz, 2.048e+09 Hz, sb=U, pol=R]
  Setup[G1]
   Setup:
    Channel: [name=Ch01 BBC=BBC01 IF=XX s=0 -> r=0 t=0 tones=]
    IF: IF_XR [name=XX, SSLO=2.3e+11, sb=U, pol=R, phaseCalInterval=0 MHz]
    Datastream:  [format=VDIF, nBit=2, nRecordChan=1, dataFrameSize=8224, nThread=0, singleThread=1, sampRate=4.096e+09]
  Setup[G2]
   Setup:
    Channel: [name=Ch01 BBC=BBC01 IF=XX s=0 -> r=0 t=0 tones=]
    IF: IF_XR [name=XX, SSLO=2.3e+11, sb=U, pol=R, phaseCalInterval=0 MHz]
    Datastream:  [format=VDIF, nBit=2, nRecordChan=1, dataFrameSize=8224, nThread=0, singleThread=1, sampRate=4.096e+09]
5 eops:
   EOP(57877, 35, 0, 0, 0)
   EOP(57878, 35, 0, 0, 0)
   EOP(57879, 35, 0, 0, 0)
   EOP(57880, 35, 0, 0, 0)
   EOP(57881, 35, 0, 0, 0)

# correlation parameters
vex=/data/lupin/test-7000/test.vex.obs
mode=normal
mjdStart=57877.2375
mjdStop=57877.23755787
minSubarray=2
visBufferLength=80
maxGap=180 # seconds
maxLength=7200 # seconds
minLength=0.5 # seconds
maxSize=2000 # MB
singleScan=0
singleSetup=1
mediaSplit=1
jobSeries=test
startSeries=7000
dataBufferFactor=16
nDataSegments=8
maxReadSize=25000000 # Bytes
minReadSize=4000000 # Bytes
outputFormat=0
antennas=G1,G2
baselines=*-*

ANTENNA G1
{
  X=-90000000000 Y=-90000000000 Z=-90000000000
  axisOffset=-999
  polSwap=0
  phaseCalInt=0
  tcalFreq=-1
}

ANTENNA G2
{
  X=-90000000000 Y=-90000000000 Z=-90000000000
  axisOffset=-999
  polSwap=0
  phaseCalInt=0
  tcalFreq=-1
}

SETUP default
{
  tInt=0.5
  FFTSpecRes=0.5
  outputSpecRes=0.5
  doPolar=1
  doAuto=1
  subintNS=0
  fringeRotOrder=1
}

RULE default
{
  correlator setup=default
}

1 job groups created:
  Group: scans 124-0542 - 124-0542 = mjd(57877.2375,57877.2375579)
Job test_7000
  mjd(57877.2375,57877.2375579)
  duty cycle = 1
  scans = 124-0542
  Antenna list: G1 G2
  size = 0 bytes
developer error: writeDifxCalc: D->job->calcFile is null

1 job(s) created.
——

Can someone indicate the way to fix the problem?

Sincerely,
--
Lupin Chun-Che Lin
Supporting Scientist of GLT (GreenLand Telescope) project 
in Institute of Astronomy and Astrophysics, Academia Sinica,
14F of Astronomy-Mathematics Building (Rm: 1405), 
National Taiwan University. 
No.1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan.
Tel: +886-2-2366-5464
Fax: +886-2-2367-7849



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