[Difx-users] [SPAM] Re: Error on using DiFx GUI to run Experiment on Synthetic data {External} {External} {External}

[Victor(Yu-An) Chen]

Hi Chris,


Thanks for the reply, Yes I was able to use command lines to get from test-lsb.vex to .fits  by through commands "vex2difx" --> "difxcalc" --> "mpifxcorr" --> "difx2fits", basically following the script in "tests/Synthetic/run-lsb.sh" or the example you gave.


Now I am trying to use the GUI to run experiment. At first I am not sure how to supply the synthetic .vdif files during the experiment. But I didn't even get that far with experiment, I am stuck at waiting for the .im file. Any guidance and help is greatly appreciated. Or is it the case that GUI is not as important as long as I get the commands line work flow working. Thank you.


Sincerely,


Victor



________________________________
From: Phillips, Chris (S&A, Marsfield) <Chris.Phillips at csiro.au>
Sent: Monday, May 5, 2025 1:40:08 PM
To: Victor(Yu-An) Chen
Cc: Adam Deller; difx-users at listmgr.nrao.edu
Subject: Re: [Difx-users] [SPAM] Re: Error on using DiFx GUI to run Experiment on Synthetic data {External} {External}

I just tried running on my copy of DIFX:



$ ./createData.sh
Using TaskSpooler to parallelise
9
10
11
12
13
14
15
16
17
Waiting for TaskSpooler to finish


$ vex2difx test-lsb.v2d
start date: 2020y100d07h00m00s
Requested integration time (1) is not an integer multiple of the FFT time (1.024e+06 ns)
Will attempt to nudge the int time to a more appropriate value
The provided tInt (1) is not an integer multiple of the subint (0.262144)
tInt has been updated from 1 to 1.31072
(You could also try modifying the subintNS if you want to try harder to get your desired integration time)

1 job(s) created.

$ difxcalc test-lsb.calc


Warning - No ocean loading coefficients for T1
Will continue but you really should update file /home/vlbi/difx281/share/difxcalc/ocean_load.coef

Warning - No ocean loading coefficients for T2
Will continue but you really should update file /home/vlbi/difx281/share/difxcalc/ocean_load.coef



Warning - No ocean pole tide loading coefficients for T1
Will continue but you really should update file /home/vlbi/difx281/share/difxcalc/ocean_pole_tide.

Warning - No ocean pole tide loading coefficients for T2
Will continue but you really should update file /home/vlbi/difx281/share/difxcalc/ocean_pole_tide.

$ mpirun -machinefile machines -np 4 mpifxcorr test-lsb.input
About to run MPIInit on node bolverk
About to run MPIInit on node bolverk
About to run MPIInit on node bolverk
About to run MPIInit on node bolverk
NOTE: difxmessage is in use.  If you are not running errormon/errormon2, you are missing all the (potentially important) info messages!
Mark5 stream: 0x7f041c004f20
  stream = File-1/1=TEST1.vdif
  format = VDIF_8000-250m1-1-2 = 3
  start mjd/sec = 58948 25200.000000000
  frame duration = 4000000.00 ns
  framenum = 0
  sample rate = 8000000 Hz
  offset = 0
  framebytes = 8032 bytes
  datasize = 8000 bytes
  frames per period = 250
  bits = 2
  alignment seconds = 1
  sample granularity = 4
  frame granularity = 1
  gframens = 4000000
  payload offset = 32
  read position = 0
  data window size = 1048576 bytes
Mark5 stream: 0x7fdc3c004f20
  stream = File-1/1=TEST2-lsb.vdif
  format = VDIF_8000-250m1-1-2 = 3
  start mjd/sec = 58948 25200.000000000
  frame duration = 4000000.00 ns
  framenum = 0
  sample rate = 8000000 Hz
  offset = 0
  framebytes = 8032 bytes
  datasize = 8000 bytes
  frames per period = 250
  bits = 2
  alignment seconds = 1
  sample granularity = 4
  frame granularity = 1
  gframens = 4000000
  payload offset = 32
  read position = 0
  data window size = 1048576 bytes

$ difx2fits test-lsb

Writing FITS tables:
  Header                    2880 bytes
  AG -- array geometry      5896 bytes
  SU -- source              11556 bytes
  AN -- antenna             8560 bytes
  FR -- frequency           5696 bytes
  ML -- model               14276 bytes
  CT -- correlator (eop)    9146 bytes
  MC -- model components    10342 bytes
  SO -- spacecraft orbit    No table written
  GD -- pulsar gate duty    No table written
  GM -- pulsar gate model   No table written
  UV -- visibility

  Visibility files:
    JobId 0 file 1/1 : /home/vlbi/difx-git/tests/Synthetic/test-lsb.difx/DIFX_58948_025200.s0000.b0000

    JobId 0 done.
      0 invalid records dropped
      0 flagged records dropped
      0 all zero records dropped
      0 negative weight records
      0 scan boundary records dropped
      0 out-of-time-range records dropped
      0 records skipped
      16 records written
      FITS MJD range: 58948.291674 to 58948.291780
                            534528 bytes
  FL -- flag                No table written
  TS -- system temperature  No table written
  PH -- phase cal
    No Tones extracted by DiFX
                            No table written
  WR -- weather             No table written
  GN -- gain curve
    GAIN_CURVE_PATH not set; only using local gain files.

    No gain curve for station 'T1'
    No gain curve for station 'T2'
                            7680 bytes
                            -----
  Total                     610560 bytes

Conversion successful

1 of 1 jobs converted to 1 FITS files





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