On Mon, Mar 27, 2017 at 6:13 PM, Paul Gilmartin < [email protected]> wrote:
> On 2017-03-27, at 17:00, Blaicher, Christopher Y. wrote: > > > It's called z/OS is not the only thing that runs on a 64-bit machine. I > haven't looked into all the particulars, but I have heard someplace that > 'C' can run in 64-bit under z/LINUX. > > > Yes. but it's a very different 'C'. I understand that z/Linux doesn't > even have a "bar". What about Gnu COBOL? > GnuCOBOL actually translates COBOL into C and then uses GCC to compile that. As to "C" running in 64 bit on z/Linux, I wouldn't see why not. GCC can make 64 bit executables on Intel x86_64 and ARM. > > Also z/VM. (But is that CP or just guests?) > > How full is LPA getting at some sites? > Hum, I'd hate to be the one to try to justify a z/OS configuration which would _require_ execution in 64 bit RMODE. How many DS8886 disk arrays would be required just for the page data sets? And then, of course, if RMODE(64) is _required_ in order to fit the programs into virtual, how much disk for the libraries. I say libraries, because I doubt you could get a lot of members into even an PDSE if it were so large it wouldn't load into RMODE(31) space. > > > -- gil > > I wonder if the IBMi people ever talk about this sort of thing. Of course, the IBMi, theoretically, uses 128 bit addressing. But the current implementation only supports using 48 bit addressing. That's 2^48==2^8 * 2^20== 256 tebibytes. -- "Irrigation of the land with seawater desalinated by fusion power is ancient. It's called 'rain'." -- Michael McClary, in alt.fusion Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
