[shlomo4p]

Hi,

Currently running on the above SGI hardware (very old) and like to migrate the application to more modern SGI platform, what choices is available?

[dexter1]

My first instinctive response to say to you is: "Keep it"
IRIX 3.3.1 is old and a 4D PI running such an IRIX version is quite rare.

If you would really like to upgrade, there is 4.0.5 and 5.3. I then would choose IRIX 4.0.5 because except for a few harmless Y2K bugs it runs fine and feels snappy and more modern, in contrast to IRIX 5.3: I have a PI 4D/35 myself and the system decides to kill init every time i start netscape. I since then regretted moving to 5.3

[jan-jaap]

Maybe with "more modern platform" he simply means a newer machine?

I'd still stick with no newer than IRIX 4.0 to have a better chance that any application designed for 3.3 will still work. Something like an Indigo or Indigo2 R4400 will run IRIX 4.0.5 and is a pretty significant speed bump over an IP6 Personal IRIS. And much smaller, less noisy etc etc. Ian Mapleson will be happy to hook you up.