I worked at Braniff Airways back in the late '70s and early 80s' supporting MVT (yes MVT on a 3033 which required an RQP). They ran ACP (Airline control Program), which I think is the origin of z/TPF. I watched them do an IPL once. It seems just a few seconds and the operators were busy typing commands on the console. They said they were activating teleprocessing lines for airports. I just stood there with my jaw on the floor.
<hearsay> The programmers also said that all the programs they wrote, in assembler on MVT curiously enough, had to be exactly 4K in size. If it was longer, they would do the equivalent of an XCTL as the last thing to continue.All the DASD was formatted in 4K records. IIRC, it was considered one bit database, even the programs. But my mind is fuzzy on all this. </hearsay> On Fri, Mar 19, 2021 at 8:45 PM Tom Brennan <t...@tombrennansoftware.com> wrote: > I hardly know anything about it, but about a year ago I watched an IPL > at one of the customers you mentioned. TPF was running on a z15 with > over 30 full-speed CP's. Their support guy mentioned he was concerned > that they may be running more TPF CP's on a single box than anyone else > in the world (bleeding edge). There were no zIIPs on the machine, but > that doesn't necessarily mean TPF can't use them... I just don't know. > > I asked the support guy, So what do you do for a local backup, when an > IPL is needed like tonight? Nothing! There is no HA backup other than > DR (local and remote). Why? Because the IPL took maybe 3 minutes > total! I guess there is little reason for sysplex or whatever (if TPF > even supports such things). > > This was one LPAR bare metal running a single TPF instance for the > entire company processing. Amazingly fast compared to z/OS. The only > special thing I remember was a feature code that allows TPF to have a > kind of ICC terminal - FC 0034 OSA ICC- 3215 Enablement - whatever a > 3215 is I don't know. > > On 3/19/2021 5:03 PM, Radoslaw Skorupka wrote: > > I know the IBM-MAIN forum is mostly about z/OS, but I wanted to ask > > about about z/TPF - it seems to be on topic. > > > > z/TPF > > > > TPF is the system I have never seen. > > I'm pretty sure there is no TPF installation in Poland. > > However I'm curious about the following: > > 1. What is typical size of TPF system? I mean MIPS sizing. Is it huge or > > rather small? > > 2. Does TPF typically run in bare LPAR or it is usually run under z/VM, > > like z/VSE is? > > 3. What is the pricing of TPF? > > 3.1 Is it just single price per system, I mean no paid optional features > > like in z/OS? > > 3.2 Is it expensive? I heard, it is much more expensive, when compared > > to z/OS running on the same MIPS base. > > 4. Any special settings in LPAR definitions? I remember about specia > > LPAR mode - ESA/TPF or so. However I don't know any explanation of the > > difference. > > 5. Does it use regular CP's only? Or maybe there are some workloads > > applicable to zIIP or even other processors? > > 6. Does it use SAP processors more extensively than other OSes? I heard > > about it. > > 7. Does exist any z/TPF forum like IBM-MAIN? > > 8. What are known customers? I'm not asking about company secrets, but I > > know (knowledge publicly available) about Citi, Marriott, VISA, BofA, > > American Airlines, BA, Sabre, Amadeus and some more. Any other known > > notable customers? Banks? ATMs? Reservations? Hotels? Anything else? > > > > Any clue will be appreciated. I have to secret plan, I just want to > > learn about it. Just curiosity. > > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
