[daip] problem with VLBAPCOR
Matt Lister
mlister at physics.purdue.edu
Sun Dec 21 10:50:18 EST 2008
Thanks Amy and Eric for fixing this very promptly.
- Matt
Eric Greisen wrote:
> 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
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