[daip] [!12344]: AIPS - TASK ACTIVE, BLEW CORE!

[Robert Gray]

Robert Gray updated #12344
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TASK ACTIVE, BLEW CORE! 
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           Ticket ID: 12344
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/12344
                Name: Robert Gray
       Email address: roberthansengray at gmail.com
             Creator: User
          Department: AIPS Data Reduction
       Staff (Owner): -- Unassigned --
                Type: Issue
              Status: Open
            Priority: Default
                 SLA: NRAO E2E
      Template group: Default
             Created: 13 July 2018 07:44 PM
             Updated: 13 July 2018 07:44 PM
           Reply due: 17 July 2018 07:44 PM (4d 0h 0m)
      Resolution due: 08 April 2021 12:00 AM (999d 4h 16m)

Hi!
I often run four AIPS sessions on my four-core Linux RHEL machine and it usually works fine (executing a proc that invokes IMAGR and then SAD on short time ranges, processing four different files). 
1.  But, recently one job will stop with the message TASK ACTIVE, and when I restart the job, either it or another of the running jobs will stop with the same message. I’ve had this problem before when trying to run more than four IMAGR jobs on this four-core machine, but I don’t have a fifth session running.  Any idea what might account for only being able to keep three jobs running on this four-core machine?
2.  A possibly related problem has appeared: when I close an AIPS and Terminal session after having the TASK ACTIVE problem, and open a new Terminal and AIPS session,  when I attempt to load my procedure with the command line RUN SRCS, it reads in a few dozen lines and reports BLEW CORE!  There is 60 GB of free memory, so I’m puzzled about why this is happening.
One clue might be that one of my three happily running jobs shows messages prefixed like IMAGR1:, and when I start new sessions they have a prefix like AIPS 1: when I’d expect a unique session number - could the sessions be attempting to use the same resources?  Oddly, after restating Terminal and AIPS a few times, now the command line RUN SRCS reports TEXT FOR SRCS UNAVAILABLE... 
 I did try RESTORE 0 and CORE shows  POPS memory available.Thanks for any thoughts you have on these problems.
 Bob Gray

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