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Con Kolivas returns with a new schedulerCon Kolivas returns with a new schedulerPosted Sep 2, 2009 14:34 UTC (Wed) by jordanb (guest, #45668)In reply to: Con Kolivas returns with a new scheduler by trochej Parent article: Con Kolivas returns with a new scheduler
FWIU IBM z/OS is compatible with every OS in its linage back to the OS/360 from the 1960s.
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Con Kolivas returns with a new scheduler Posted Sep 2, 2009 16:15 UTC (Wed) by zlynx (subscriber, #2285) [Link]
AFAIK, IBM does it with virtualization. When running 1960's software it is running the 1960's OS on simulated 1960's hardware.
Con Kolivas returns with a new scheduler Posted Sep 3, 2009 4:56 UTC (Thu) by k8to (subscriber, #15413) [Link]
Isn't that kind of aside from the point? I mean how they do it is pretty much their choice. They do it.
Con Kolivas returns with a new scheduler Posted Sep 3, 2009 13:28 UTC (Thu) by zlynx (subscriber, #2285) [Link]
I was just commenting on how they do it. I am not saying anything bad about it.
Con Kolivas returns with a new scheduler Posted Sep 6, 2009 11:46 UTC (Sun) by trasz (guest, #45786) [Link]
z/OS keeps full compatibility only for applications that don't mess with system internals. If your program does something strange (although supported by IBM), it's possible that it will cease working in few releases from now. Of course there is a whole process of phasing out features, so it won't be a nasty surprise to you or your customers - but still, they are definitely not keeping 30 years of backward compatibility for that.
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