[daip] TVFLG problem

[Eric Greisen]

Doug Ratay writes:
 > Hi.  I've been trying to run TVFLG on UV spectral line data.  The output
 > of running TVFLG is this:
 > 
 > europa> TVFLG1: Task TVFLG  (release of 15OCT99) begins
 > europa> TVFLG1: Begin finding a list of times to enter the grid
 > europa> TVFLG1: Found  6515 time intervals to grid, so
 > europa> TVFLG1: begin gridding the data to a temporary TVFLGR file
 > hewish> TVFLG1: GRIDTB: UNABLE TO CREATE OUTPUT IMAGE FILE - ERROR    1
 > hewish> TVFLG1: NO DISK SPACE ON ALLOWED DISKS
 > hewish> TVFLG1: Purports to die of UNNATURAL causes
 > hewish> TVFLG1: hewish       15OCT99 TST: Cpu=      15.8  Real=     707
 > europa> TVFLG1: ZCREA2: SPACE LOCK FILE = DA05:SPACE
 > europa> TVFLG1: ZCREA2: STILL BUSY AFTER 30 TRIES IN 60 SECONDS
 > europa> TVFLG1: ZCREA2: A STOPPED PROCESS MAY HAVE IT MONOPOLIZED
 > europa> TVFLG1: ZCREA2: NOTIFY THE AIPS SYSTEM MANAGER
 > europa> TVFLG1: ZCREA2: PERFORMING NON-ATOMIC FILE CREATION INSTEAD
 > europa> TVFLG1: ZCREA2: SPACE LOCK FILE = DA05:SPACE
 > europa> TVFLG1: ZCREA2: STILL BUSY AFTER 30 TRIES IN 60 SECONDS
 > europa> TVFLG1: ZCREA2: A STOPPED PROCESS MAY HAVE IT MONOPOLIZED
 > europa> TVFLG1: ZCREA2: NOTIFY THE AIPS SYSTEM MANAGER
 > europa> TVFLG1: ZCREA2: PERFORMING NON-ATOMIC FILE CREATION INSTEAD
 > europa> TVFLG1: GRIDTB: UNABLE TO CREATE OUTPUT IMAGE FILE - ERROR    1
 > europa> TVFLG1: NO DISK SPACE ON ALLOWED DISKS
 > europa> TVFLG1: Purports to die of UNNATURAL causes
 > europa> TVFLG1: europa       15OCT99 TST: Cpu=      80.2  Real=     589
 > 

      You appear to be running two TVFLGs at the same time, one on
hewish and one on europa but apparently both using the same data area.
This is very dangerous and they are apparently colliding.  the hewish
one locks the file creation control file while trying to create the
file and the europa one then gets into trouble too.

        Try running only one.  Try it with a modest TIMERANGE or some
other adverb to conrtrol the data set size to something smaller.  Your
old version of aips does not in general support files > 2 Gbyte and
you might be hitting that limit.

        If the SPACE file lock remains, try 
    cd $DA05   (or go to the disk area it is if the env variable is
               not known
    mv SPACE SPACE.old
    touch SPACE

and then run it again.

 > By doing a "freespac" command on the disk I'm trying to write to, I
 > see that I have more than enough space to write the workfile (about 50%
 > free on a 12000000 block space.  I've also checked the TVFLG
 > parameters, and I'm certain that AIPS should be writing to the disk
 > that I want it to.  I've noticed, though, that after TVFLG
 > dies, the free space on my disk is reduced by about 7%, with no new file
 > being created in the catalog.
 > 
 > If there's anything you could do to help, I would appreciate it very much.
 > Also let me know if you need more info.  I've cc'ed this email to my
 > system manager as well. Thanks.
 > 						Doug Ratay
 > 						
 > 
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 > 

Eric Greisen