[daip] Problems with ANTAB/NX table

[Eric Greisen]

On 08/03/2015 08:39 AM, Elizaveta Rastorgueva-Foi wrote:
> Hi,
>
> I was advised by Arnaud Collioud to address this AIPS question to you as
he encountered similar problem before and received good help.
>
> I am attempting to image a large geodetic experiment (CONT14),
and running into a problem while trying to import a hand-made ANTAB table.
I cannot proceed with this table and even check if it is ok because
every time I try to import it I run into the following error:
>>
>> ANTAB1: Task ANTAB  (release of 31DEC14) begins
>> ANTAB1: NXREAD: INCREASE PARAMETER MAXNX
>> ANTAB1: Purports to die of UNNATURAL causes
>> ANTAB1: localhost    31DEC14 TST: Cpu=       0.0  Real=       0
>> AIPS 1: Resumes
>>
> This happens on both 31DEC14 and 31DEC15 installations (I use two
different isolated binary installations on different machines). This
is a reasonably large chunk of data, first 24h of a 14-days experiment,
16 IFs, 17 antennas. Arnaud encountered similar problem while trying
to image some other geodetic session. He suggested that this might
occur because my NX table is too large, as maximum length of it is
limited. Indeed NX table was over 50000 lines, and I doubt it is
possible to reduce it. Idea of Arnaud is that the parameter that
defines the maximum length of the index table can be increased,
but that is something that I cannot do myself. Could you please
help me with this issue? I wasn't able yet to make MNJ working
on either of my machines, but can try to set it up if it's the
only way to patch it.

The MNJ should work and that is the only way to get corrections short of 
re-installing aips.  I have change the 31DEC15 version (only) of
ANTAB to handle 512K NX table entries (up from 16K).  If there is a
problem with the MNJ ($HOME/do_dail.<hostname>) tell me about it and
perhaps I can help.

Eric Greisen