[daip] AIPS problem

[Eric Greisen]

Thomas Krichbaum writes:

 > 1. There seems to be a problem with FITLD. Recent VLBA data which I
 > got on DDS3 (BK90B, Feb. 2002) could not be loaded with FITLD on our HP's
 > (using an HP tape drive, and a HP disk).
 > Together with W. Alef we tried various combinations of machines and
 > tapedrives. Finally we found that FITLD reads the data 
 > using AIPS on Linux PC and Linux tape drive. On the HP's FITLD always
 > crashed after reading the first file from tape. I skipped to another
 > file (eg. the 2nd, 3rd, etc.) but it also crashed there. The crash always
 > happend near the stop time of the data set, which we tried to read in.
 > Further below I show the detailed error message.

      I am confused about this one - can you send me the inputs you
used?  (More comments below.)

 > 
 > 2. There is a plotting problem of POSSM on LINUX AIPS, if one tries 
 > to plot STOKES 'LR'. If I specify STOKES 'LL','RR','RL' it works.
 > If I specify polplot 'LR/RR' it also works. I used 
 > NPLOTS 9
 > APARM  1 0 0 0 0 0 1 0 1 0    
 > 
 > This happens for different data sets and also one other user (U. Bach)
 > had the same problem. 

        Amy has corrected this one.

 > HP218 > FITLD3: Current file has    47311 visibilities
 > HP218 > FITLD3: File ref. freq:    86210.49 MHz
 > HP218 > FITLD3: Found 1633+382         at   0/08:06:59 src #   1
 > HP218 > FITLD3:                                        fqid #   1
 > HP218 > FITLD3:    10000 vis. written
 > HP218 > FITLD3: UV table spanned time:   0/08:07:00 -  0/08:36:53

     This message comes at the end of the UT table indicating that it
is next to read another file.  The line just after this message (which
you omitted) would have benn interesting.  In fact seeing all lines
would be helpful.

     Unless you selected only some of the data it should read 47000
vis or so - but the UV table spanned message comes after the full UT
file is processed somewhere between 10000 and 20000.

Can you send the inputs and all the messages?

Eric

 > 
 > ....
 > 
 > HP218 > FITLD3:    20000 vis. written
 > HP218 > FITLD3: Found 1633+382         at   0/09:25:48 src #   1
 > HP218 > FITLD3:                                        fqid #   3
 > HP218 > FITLD3:    30000 vis. written
 > HP218 > FITLD3: UV table spanned time:   0/09:06:54 -  0/09:28:40
 > HP218 > FITLD3:    31347 vis. written
 > HP218 > FITLD3: ZABORS: signal 11 received
 > HP218 > FITLD3: ABORT!
 > 
 > 
 > it fails:
 > on different HP machines 
 > on different tape drives
 > in versions NEW and TST
 > with and without freq. selection (SELFFREQ, FQTOL)
 > with and without compression (DOUVCOMP)   
 > on first or second or third file of DAT (DDS3)
 > if only one source is selected
 > it always crashes at the end of one file in standard
 > VLBA data distribution tape. Perhaps it has problems
 > writing the tables.
 > 
 > 
 > 
 > 
 > 
 > -- 
 > Thomas P. Krichbaum                              Tel.: (Germany +49)-228-525-295
 > Max-Planck-Institut fuer Radioastronomie         Fax : (Germany +49)-228-525-229
 > Auf dem Huegel 69                         e-mail:   tkrichbaum at mpifr-bonn.mpg.de
 > D-53121 Bonn / Germany                    www.mpifr-bonn.mpg.de/staff/tkrichbaum
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