[daip] UVCOP hanging? {External}

[Arnaud Collioud]

Note :I run AIPS on my laptop (Linux), so it is unlikely that the issue 
is related to a disk problem.

I reloaded the UVCOP exe. Then I monitored the UVCOP1 process using watch :

* when launching the task in AIPS, the process UVCOP1 starts

* it runs for about 5 seconds (which seems short considering the dataset 
is about 2 Go)

* then the process disapears ; in AIPS, the task seems to be still 
running (no error message).


After double checking the output file, this one is not complete : all 
tables but the FQ one are missing! So something is really happening (or 
not happening).

*Input data:*

 >imh
AIPS 1: Image=MULTI     (UV)         Filename=RV146_X .UVDATA.   1
AIPS 1: Telescope=VLBA               Receiver=VLBA
AIPS 1: Observer=RV146               User #=    3
AIPS 1: Observ. date=24-MAR-2021     Map date=30-SEP-2021
AIPS 1: # visibilities    680218     Sort order  TB
AIPS 1: Rand axes: UU-L-SIN  VV-L-SIN  WW-L-SIN  TIME1  SUBARRAY
AIPS 1:            SOURCE  FREQSEL  INTTIM  GATEID  ANTENNA1 ANTENNA2
AIPS 1:            CORR-ID
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type    Pixels   Coord value     at Pixel     Coord incr Rotat
AIPS 1: COMPLEX      3   1.0000000E+00       1.00 1.0000000E+00    0.00
AIPS 1: STOKES       1  -1.0000000E+00       1.00 -1.0000000E+00    0.00
AIPS 1: FREQ        64   8.3657500E+09       0.62 2.5000000E+05    0.00
AIPS 1: IF           4   1.0000000E+00       1.00 1.0000000E+00    0.00
AIPS 1: RA           1    00 00 00.000       1.00 0.000000    0.00
AIPS 1: DEC          1    00 00 00.000       1.00 0.000000    0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Maximum version number of extension files of type HI is 1
AIPS 1: Maximum version number of extension files of type CL is 1
AIPS 1: Maximum version number of extension files of type AT is 1
AIPS 1: Maximum version number of extension files of type NX is 1
AIPS 1: Maximum version number of extension files of type IM is 1
AIPS 1: Maximum version number of extension files of type CT is 1
AIPS 1: Maximum version number of extension files of type MC is 1
AIPS 1: Maximum version number of extension files of type GC is 3
AIPS 1: Maximum version number of extension files of type WX is 1
AIPS 1: Maximum version number of extension files of type TY is 3
AIPS 1: Maximum version number of extension files of type PC is 1
AIPS 1: Maximum version number of extension files of type FQ is 1
AIPS 1: Maximum version number of extension files of type AN is 1
AIPS 1: Maximum version number of extension files of type SU is 1
AIPS 1: Maximum version number of extension files of type CQ is 1
AIPS 1: Maximum version number of extension files of type FG is 2
AIPS 1: Keyword = 'OLDRFQ  '  value =  8.36575000D+09
AIPS 1: Keyword = 'SUBARRAY'  value =            1
AIPS 1: Keyword = 'CORRELAT'  value = 'DIFX    '


*Output data:*

 >imh
AIPS 1: Image=MULTI     (UV)         Filename=RV146_X.SAV .UVDATA.   1
AIPS 1: Telescope=VLBA               Receiver=VLBA
AIPS 1: Observer=RV146               User #=    3
AIPS 1: Observ. date=24-MAR-2021     Map date=25-AUG-2022
AIPS 1: # visibilities    680218     Sort order  TB
AIPS 1: Rand axes: UU-L-SIN  VV-L-SIN  WW-L-SIN  TIME1  SUBARRAY
AIPS 1:            SOURCE  FREQSEL  INTTIM  GATEID  ANTENNA1 ANTENNA2
AIPS 1:            CORR-ID
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type    Pixels   Coord value     at Pixel     Coord incr Rotat
AIPS 1: COMPLEX      3   1.0000000E+00       1.00 1.0000000E+00    0.00
AIPS 1: STOKES       1  -1.0000000E+00       1.00 -1.0000000E+00    0.00
AIPS 1: FREQ        64   8.3657500E+09       0.62 2.5000000E+05    0.00
AIPS 1: IF           4   1.0000000E+00       1.00 1.0000000E+00    0.00
AIPS 1: RA           1    00 00 00.000       1.00 0.000000    0.00
AIPS 1: DEC          1    00 00 00.000       1.00 0.000000    0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Maximum version number of extension files of type FQ is 1
AIPS 1: Keyword = 'OLDRFQ  '  value =  8.36575000D+09
AIPS 1: Keyword = 'SUBARRAY'  value =            1
AIPS 1: Keyword = 'CORRELAT'  value = 'DIFX


I put the data here 
(https://nuage.oasu.u-bordeaux.fr/index.php/s/YYypG3iX8MJzf3P) if you 
want to try at home...

Cheers,

A.


Le 25/08/2022 à 17:11, egreisen a écrit :
> On 2022-08-25 08:40, Arnaud Collioud via Daip wrote:
>> Hello Eric, Amy,
>>
>> I am trying to copy some uvdata with UVCOP but the process never
>> stops, i.e. the file is well created and seem to have the right size
>> but the message "Appears to have ended successfully" never displays
>> (as well as no progress indications) and the input/output files stay
>> in READ/WRIT mode.
>>
>> When trying to abort the task,
>>
>>> abort 'uvcop'
>> AIPS 1: TASK UVCOP1 WAS NOT RUNNING
>>
>> Any idea of what is happening here? I know there were some recent
>> changes in this task...
>>
>> BTW, I am using the up-to-date 31DEC22 version of AIPS.
>
> That is good.  I wish more people were using the latest.
>
> Note that ABORT takes NUMTELL.  So if you are running in say AIPS2
> but NUMTELL is 1, then ABORT will try to kill UVCOP1 when you are
> running UVCOP2.  NUMTELL 0 says to use your current AIPS number.
>
> Try SPY or outside AIPS "ps -elf | grep UVCOP" to see if the task
> is in fact running.  If not, perhaps it simply vanished although
> there is an abort handler that is supposed to yield a message.
>
> If it is present, perhaps some one of your disks is off line.  We
> had symptoms like this recently when our Lustre disk complex had
> problems.
>
> Eric
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