[daip] tv on iMac

[Wes Young]

Likely what is happening is something else is using shared memory and  
you've just not allocated enough.  You can try upping the shared  
memory to 16777216 (16MB) this might help.  You can check on shared  
memory by doing "ipcs -a". So maybe the next time this happens do an  
"ipcs -a" it will tell you what process has allocated the shared  
memory. If the output of "ipcs -a" is not clear, send it along and I  
can probably tell you what it means.

wes
wyoung at aoc.nrao.edu


On 29 Nov 2006, at 15:55, Sara Beck wrote:

>
> Dear Designated Aip,
>
> I recently installed AIPS on an iMac with a 24-inch screen and got the
> known shared memory failure id: invalid argument problems, so I edited
> the rc file in /etc
> to read  sysctl -w kern.sysv.shmmax=10485760
>             sysctl -w kern.sysv.shmmin=1
>             sysctl -w kern.sysv.shmmni=32
>             sysctl -w kern.sysv.shmseg=8
>             sysctl -w kern.sysv.shmall=4096
>
> as suggested by your FAQ. So now about half the time it works fine,  
> the
> other  half it gives the same shared memory failure message and  
> doesn't
> open the TV.  It is easily fixed by restarting the computer, but I am
> wondering why it isn't working all the time, and what I can do to  
> improve
> it? I'm not going to fiddle with the shared memory unless I have  
> some idea
> what's going on.
>
> Many thanks,
>
> Sara Beck
>
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