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Re: AP and/or MP support in VM/CE: Does it exist or no?


 

On Sun, Oct 30, 2022 at 04:44 PM, Bertram Moshier wrote:
... it would?be nice for VM/CE to be more than just a UP OS.

The use case for an AP VM/370 servicing single CMS user is? CMS doesn't multitask; it doesn't even generally do asynchronous disk I/O.??

An UP VM/370 under Hercules running on a modern host kicks the butt of the real 1980 era hardware, so I don't see why AP matters in general. This is especially true since AP vs. UP is invisible to the average user.

Also, running VM/SP in AP mode under Hercules resulted increased failed IPL instances. It wasn't worth the effort to chase it, especially since it didn't match the live 4361 UP hardware.

Working on functionality visible to user would be more rewarding to more people.

-ahd-

p.s. As I?dimly?recall from ~ 4 years ago,?I?tested VM/SP on the live LCM+L IBM 4361 versus the Hercules image used to develop for the 4361.? Hercules was on Raspberry Pi 3b (or 3b+, I don't know remember). The VM/SP running under Hercules had ~3 times the performance as the live hardware, and the Pi 3b is not build for speed. Using fast x86 box, a UP VM would be blazing.

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