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Re: zLinux/s390 Linux on Hercules
by peter_flass
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What were you expecting? It's Linux; if it were significantly different from x86 Linux, it would be something else.
--- In hercules-390@..., "hec.tor1" <hec.tor1@...> wrote:
>
> Thanks for your response Bruce. I found the turnkey 3.8j MVS distribution, and look forward to hours of retrocomputing fun on that.
>
> I spent a bit of time installing the s390 linux and found that it was like the i386 linux it was running on...minus few packages that hadn't been ported, and slower. I wondered: "Am I missing something? Will this emulated processor do special data and processor integrity things for me that will improve the overall function of my programs?"
>
> I read elsewhere that it won't, but I wanted to make sure.
>
> --- In hercules-390@..., "BruceTSmith" <brucetsmith@> wrote:
> >
> > As far as z/Arch, us poor Hercules users are really "legally" limited to Linux. IBM has some great OSes - z/OS, z/VM, and z/VSE (my baby). But these are all "licensed" Operating Systems. They're generally limited to a specific CPU, and if you use them, IBM wants to see a big check in the mail every month...
> >
> > I'ld love to see IBM offer a free (or really cheap) "hobby" or "education" or "not for profit" license. But I don't see that happening in the near future, if ever. IBM wants the bucks, period. This is one of my favorite rants, but if I continue, this thread will get tossed over to the "Advocacy" group... :) :)
> >
> > However, all is not lost! z/Arch has a long history, going back to 1964 and the System/360 days. And there are several S/360-370 OSes that you can "legally" run under Hercules, including OS/MVT, MVS, DOS/360, DOS/VS and VM/370. None are modern "64 bit" operating systems, but they all use the same basic "System/3x0" architecture, which is the foundation for z/Arch...
> >
> > Virtually everything that you learn from an "ancient" OS, like MVS, can be >>> DIRECTLY <<< adapted to z/Arch...
> >
> > Learn the "basics" first, then worry about 64-bit Z/Arch...
> >
> > Just my humble opinion, speaking as an old mainframe nerd that got into this business in 1968. :)
> >
> > B..
> >
> > --- In hercules-390@..., "hec.tor1" <hec.tor1@> wrote:
> > >
> > > Ivan, thanks for taking the time to respond to my questions. You are of course correct that one wants portable code, and the s390/x port allows one to test it against this architecture running zLinux...
> > >
> > > Perhaps my question is not understandable. The bottom line is that I want to know what else I can do with my installed emulated s390 linux, other than test/run the normal linux code, and learn about the s390/zArchitecture.
> > >
> > > Am I missing anything?
> > >
> > > As far as speed goes, it's of course not as fast as running programs natively, so I am inclined to do most of my computing in the i386 linux. However, if there were some advantage for me of runnning some software in s390 linux, I would want to take advantage of that. I hope my question becomes more clear.
> > >
> > > ...
> > >
> >
>
--- In hercules-390@..., "hec.tor1" <hec.tor1@...> wrote:
>
> Thanks for your response Bruce. I found the turnkey 3.8j MVS distribution, and look forward to hours of retrocomputing fun on that.
>
> I spent a bit of time installing the s390 linux and found that it was like the i386 linux it was running on...minus few packages that hadn't been ported, and slower. I wondered: "Am I missing something? Will this emulated processor do special data and processor integrity things for me that will improve the overall function of my programs?"
>
> I read elsewhere that it won't, but I wanted to make sure.
>
> --- In hercules-390@..., "BruceTSmith" <brucetsmith@> wrote:
> >
> > As far as z/Arch, us poor Hercules users are really "legally" limited to Linux. IBM has some great OSes - z/OS, z/VM, and z/VSE (my baby). But these are all "licensed" Operating Systems. They're generally limited to a specific CPU, and if you use them, IBM wants to see a big check in the mail every month...
> >
> > I'ld love to see IBM offer a free (or really cheap) "hobby" or "education" or "not for profit" license. But I don't see that happening in the near future, if ever. IBM wants the bucks, period. This is one of my favorite rants, but if I continue, this thread will get tossed over to the "Advocacy" group... :) :)
> >
> > However, all is not lost! z/Arch has a long history, going back to 1964 and the System/360 days. And there are several S/360-370 OSes that you can "legally" run under Hercules, including OS/MVT, MVS, DOS/360, DOS/VS and VM/370. None are modern "64 bit" operating systems, but they all use the same basic "System/3x0" architecture, which is the foundation for z/Arch...
> >
> > Virtually everything that you learn from an "ancient" OS, like MVS, can be >>> DIRECTLY <<< adapted to z/Arch...
> >
> > Learn the "basics" first, then worry about 64-bit Z/Arch...
> >
> > Just my humble opinion, speaking as an old mainframe nerd that got into this business in 1968. :)
> >
> > B..
> >
> > --- In hercules-390@..., "hec.tor1" <hec.tor1@> wrote:
> > >
> > > Ivan, thanks for taking the time to respond to my questions. You are of course correct that one wants portable code, and the s390/x port allows one to test it against this architecture running zLinux...
> > >
> > > Perhaps my question is not understandable. The bottom line is that I want to know what else I can do with my installed emulated s390 linux, other than test/run the normal linux code, and learn about the s390/zArchitecture.
> > >
> > > Am I missing anything?
> > >
> > > As far as speed goes, it's of course not as fast as running programs natively, so I am inclined to do most of my computing in the i386 linux. However, if there were some advantage for me of runnning some software in s390 linux, I would want to take advantage of that. I hope my question becomes more clear.
> > >
> > > ...
> > >
> >
>
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