[daip] [!16532]: AIPS - The error of aips TV

[Eric Greisen]

The error of aips TV
--------------------

           Ticket ID: 16532
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/16532
                Name: Weihua Shao
       Email address: d201677074 at hust.edu.cn
             Creator: User
          Department: AIPS Data Reduction
       Staff (Owner): Eric Greisen
                Type: Issue
              Status: Open
            Priority: Default
                 SLA: NRAO E2E
      Template group: Default
             Created: 12 July 2020 01:07 PM
             Updated: 13 July 2020 05:11 AM
           Reply due: 15 July 2020 02:11 AM (1d 20h 59m)
      Resolution due: 08 April 2023 12:00 AM (998d 18h 48m)
Eric Greisen (egreisen at nrao.edu) replied with:
On 2020-07-12 22:11, Weihua Shao wrote:
> The error of aips TV
> --------------------
> 
>            Ticket ID: 16532
>                  URL:
> https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/16532
>                 Name: Weihua Shao
>        Email address: d201677074 at hust.edu.cn
>              Creator: User
>           Department: AIPS Data Reduction
>        Staff (Owner): Eric Greisen
>                 Type: Issue
>               Status: Open
>             Priority: Default
>                  SLA: NRAO E2E
>       Template group: Default
>              Created: 12 July 2020 01:07 PM
>              Updated: 13 July 2020 02:11 AM
>            Reply due: 15 July 2020 02:11 AM (2d 0h 0m)
>       Resolution due: 08 April 2023 12:00 AM (998d 21h 49m)
> 
> Dear Eric,
> 
>          Thanks for your help, but it doesn't work, and i look at the
> massages as AIPS starts up, it seems reports any errors. I don't know
> how to do next, Please help me.
> 
> Thank you
> 
> Best wishes,
> 
> Weihua Shao
> 
> 
> 
> You need to create an /etc/sysctl.conf file and put the values in it,

             kern.sysv.shmmax=10485760
             kern.sysv.shmmin=1
             kern.sysv.shmmni=32
             kern.sysv.shmseg=8
             kern.sysv.shmall=4096


You should use the values you had when you were running tiger. Those 
could be in /Previous\ System/etc/rc, assuming you have "Previous 
System". So three different OS upgrades and three different ways to 
adjust the default shared memory. Note: You will need to reboot the 
system for the change in shared memory to take place. You can check if 
the shared memory changes happened by typing "sysctl kern.sysv" in a 
terminal or xterm window. Look for the kern.sysv.shm* values. If the 
values have not changed, make sure you haven't inadvertently left in 
"sysctl -w" in the /etc/sysctl.conf file or mis-typed one of the values. 
If the /etc/sysctl.conf file is not properly formatted, or shmmax is not 
an integer multiple of shmall, the shared memory will not be adjusted 
after the reboot.

Eric Greisen

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> ------------------------------------------------------
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