[Simh] VAX memory

[Wilm Boerhout]

gérard Calliet schreef op 19-1-2017 om 21:25:
> Hello,
>
> I use simh to emulate a VAX. It seems I have a strange issue.
> I have a process which use a huge number of logical names. So it uses 
> memory. With a physical VAX of 128m it was difficult but possible.
> I use the same system disk (upgraded from VMS 6 to VMS 7.3).
> I use last version of simh with 512m and I get a "%SYSTEM-F-INSFMEM, 
> insufficient dynamic memory" message.
> I thought new version of VMS needed more memory, so I add a lot to all 
> the memory parameters. Same problem.
>
The new version may need more or less memory in different places, but 
going from V6 to V7 means that AUTOGEN knows about more interrelationships.

It is/was best practice to run AUTOGEN (without feedback) after a major 
VMS version upgrade. What usually works:

  * place your usual (V6) SYSGEN parameters in MODPARAMS.DAT
  * reboot, using a conversational boot, and in SYSBOOT> USE DEFAULT
  * run AUTOGEN with parameters GETDATA REBOOT NOFEEDBACK

Resolve any issues in the AUTOGEN report, observe the behaviour of the 
system and adjust only via MODPARAMS.DAT.

/Wilm