[daip] problem with VLBAPCOR

[Eric Greisen]

Matthew L Lister wrote:
> I've noticed some unusual behavior of VLBAPCOR in the 31DEC07 and 
> 31DEC08 releases, I'm
> enclosing two possm plots for dataset BC077B (the same problem has 
> occurred in other datasets
> as well). The first one is the result of running VLBAPCOR with the 
> 31DEC05 version, the
> latter is the 31DEC08 version. Notice how the phases are not aligned 
> correctly for the
> FD-HN baseline in the 31DEC08 version (POSSM_2.PS) but are correctly 
> aligned in the 31DEC05 version (POSSM_3.PS).
> 
> Here are the inputs:
> 
> AIPS 1: VLBAPCOR: Procedure to correct instrumental phases
> AIPS 1: Adverbs     Values                 Comments
> AIPS 1: ----------------------------------------------------------------
> AIPS 1: INNAME     'BC077B'                Input UV file name (name)
> AIPS 1: INCLASS    'FQ-3'                  Input UV file name (class)
> AIPS 1: INSEQ         1                    Input UV file name (seq. #)
> AIPS 1: INDISK        1                    Input UV file disk unit #
> AIPS 1: TIMERANG      0           3        Time range of a calibrator
> AIPS 1:               8           2         1-4 = start day,hr,min,sec
> AIPS 1:               0           3         5-8 = end   day,hr,min,sec
> AIPS 1:              11          58        MUST BE SPECIFIED
> AIPS 1: REFANT        2                    Ref. antenna, 0=>the first
> AIPS 1: SUBARRAY      0                    Subarray;  0 => all.
> AIPS 1: CALSOUR    *all ' '                Calibrator source name;
> AIPS 1:                                    blank => any
> AIPS 1: GAINUSE       0                    CL table to use; 0=>highest
> AIPS 1:                                    ADVERBS FOR ANTENNAS NOT
> AIPS 1:                                    CONTAINED IN PC TABLE:
> AIPS 1: INVER         1                    Input  PC table, 0=>last one
> AIPS 1: OPCODE     ' '                     'CALP' if you are missing PC
> AIPS 1:                                    information for any antenna;
> AIPS 1:                                    otherwise ' '
> AIPS 1: ANTENNAS   *all 0                  antennas for which manual
> AIPS 1:                                    phase corrections should be
> AIPS 1:                                    obtained (i.e. they are
> AIPS 1:                                    missing from the PC table or
> AIPS 1:                                    are the pcals in PC table are
> AIPS 1:                                    incorrect).
> AIPS 1:

Amy has determined that this is a compiler error in the Intel 
optimization.  PCCOR runs in no time anyway so we will turn off 
optimiztion.  The MNJ on 31DEC08 or 31DEC09 tomorrow will fix this.

Eric Greisen