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

Adam Deller adeller at astro.swin.edu.au
Sat Jun 3 03:45:34 EDT 2017


Hi Lupin,

It would help if you include the vex file and v2d file.  Hard to debug
without them.

Cheers,
Adam

On 3 June 2017 at 17:05, Lupin Lin <lupin at asiaa.sinica.edu.tw> wrote:

> 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 <+886%202%202366%205464>
> Fax: +886-2-2367-7849 <+886%202%202367%207849>
>
>
>
>
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>
>


-- 
!=============================================================!
Dr. Adam Deller
ARC Future Fellow, Senior Lecturer
Centre for Astrophysics & Supercomputing
Swinburne University of Technology
John St, Hawthorn VIC 3122 Australia
phone: +61 3 9214 5307
fax: +61 3 9214 8797

office days (usually): Mon-Thu
!=============================================================!
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