Re: TOD clock format

2012-02-01 Thread Ken Porowski
It already is. It's in Kansas. -- This email message and any accompanying materials may contain proprietary, privileged and confidential information of CIT Group Inc. or its subsidiaries or affiliates (collectively, "CIT"

Re: TOD clock format

2012-02-01 Thread John Gilmore
Gerhard Postpischil wrote: | And Toronto will be a U.S. city? I was reliably informed that 'Toronto' has for some reason always been problematic; a precursor of Watson, reasoning by phonetic analogy with 'Taranto', moved it to Italy in a slightly different context. --jg On 1/31/12, Gerhard Po

Re: TOD clock format

2012-01-31 Thread Gerhard Postpischil
On 1/31/2012 3:48 PM, Ken Porowski wrote: Watson should be answering all the questions by then . And Toronto will be a U.S. city? Gerhard Postpischil Bradford, VT -- For IBM-MAIN subscribe / signoff / archive access instruc

Re: TOD clock format

2012-01-31 Thread Mike Schwab
On Tue, Jan 31, 2012 at 3:03 PM, Paul Gilmartin wrote: > On Tue, 31 Jan 2012 15:48:16 -0500, Ken Porowski wrote: > >>Watson should be answering all the questions by then . >> > Siri. > > -- gil Like this? http://www.funnyordie.com/videos/2bcb35e787/cockblocked-by-siri -- Mike A Schwab, Springfiel

Re: TOD clock format

2012-01-31 Thread Ken Porowski
Correction: Watson should be giving all the 'correct' answers by then. -- This email message and any accompanying materials may contain proprietary, privileged and confidential information of CIT Group Inc. or its subsidia

Re: TOD clock format

2012-01-31 Thread Paul Gilmartin
On Tue, 31 Jan 2012 15:48:16 -0500, Ken Porowski wrote: >Watson should be answering all the questions by then . > Siri. -- gil -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu

Re: TOD clock format

2012-01-31 Thread Ken Porowski
il address. -- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of Phil Smith Sent: Tuesday, January 31, 2012 2:58 PM To: IBM-MAIN@bama.ua.edu Subject: Re: [IBM-MAIN] TOD clock format Barry Merrill wrote: > 6. I pl

Re: TOD clock format

2012-01-31 Thread Phil Smith
Barry Merrill wrote: > 6. I plan to be here to observe the wrap; I'll be 101+six months in Sept 2042. And MXG will still be running, I'm sure! What version will it be by then? Will the operating system still be called "z/OS"? If so, will it be Version 1 Release 43? What will the hardware be know

Re: TOD clock format

2012-01-31 Thread John Gilmore
s in Sept > 2042. > > Barry Merrill > > -Original Message- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf > Of Charles Mills > Sent: Tuesday, January 31, 2012 11:58 AM > To: IBM-MAIN@bama.ua.edu > Subject: Re: TOD clock format &g

Re: TOD clock format

2012-01-31 Thread Barry Merrill
AM To: IBM-MAIN@bama.ua.edu Subject: Re: TOD clock format > the programs that digest the records can actually deal with that If I had to venture a guess I would guess that 64-bit TOD clock fields will still be around post-2042 and programs will be using windowing techniques to decide if a particula

Re: TOD clock format

2012-01-31 Thread Charles Mills
seemingly forever. Charles -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of Phil Smith Sent: Tuesday, January 31, 2012 7:08 AM To: IBM-MAIN@bama.ua.edu Subject: Re: TOD clock format John Gilmore wrote: >There is thus no excuse f

Re: TOD clock format

2012-01-31 Thread Charles Mills
Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of Phil Smith Sent: Tuesday, January 31, 2012 7:08 AM To: IBM-MAIN@bama.ua.edu Subject: Re: TOD clock format John Gilmore wrote: >There is thus no excuse for any use of an STCK instruction in NEW code. >Old code is a different matte

Re: TOD clock format

2012-01-31 Thread Phil Smith
John Gilmore wrote: >There is thus no excuse for any use of an STCK instruction in NEW >code. Old code is a different matter, If it is judged that there is >NO possibility that it will still be in use in 2042, STCKs in it need >not be replaced. Otherwise they should be. How about code that's ge

Re: TOD clock format

2012-01-31 Thread Shmuel Metz (Seymour J.)
In , on 01/30/2012 at 03:27 PM, Phil Smith said: >It's been a while since I did an STCK and looked at the results. ISTR >that the last five or so nibbles were always zero; Maybe on a really old, slow machine. IAC, the basics haven't changed; each bit ot the TOD clock represents the same durat

Re: TOD clock format

2012-01-30 Thread Tom Marchant
On Mon, 30 Jan 2012 15:27:06 -0800, Phil Smith wrote: >I looked at PofOp and didn't see it (but then, it's not the >most accessible volume any more - remember the old days, >when it was what, 200 pages?). The -7 edition of the System/360 POO is on bitsavers. It is 199 pages and you won't find

Re: TOD clock format

2012-01-30 Thread John Gilmore
Regrettably, the current PrOp in not specific about the time horizon of the STCK instruction. At 23:58:43 on 17 September 2042 the IBM mainframe TOD clock, 64-bit STCK value overflows. STCKE values do not have this defect. Effectively, they are 14-byte, 8 x 14 = 112-bit [unsigned] values. (The

Re: TOD clock format

2012-01-30 Thread Paul Gilmartin
On Mon, 30 Jan 2012 19:54:06 -0500, Tony Harminc wrote: > >Even machines with the traditional 64-bit TOD clock guaranty that >different values will be obtained from two executions of STCK on one >or different CPUs. You cannot issue STCKs fast enough to obtain >duplicate values. Or rather, the machi

Re: TOD clock format

2012-01-30 Thread Tony Harminc
On 30 January 2012 18:27, Phil Smith wrote: > It's been a while since I did an STCK and looked at the results. ISTR that > the last five or so nibbles were always zero; now they aren't. Five zero nibbles suggest quite a slow CPU. On current hardware, a number of bits to the right of position 51

Re: TOD clock format

2012-01-30 Thread Charles Mills
Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of Phil Smith Sent: Monday, January 30, 2012 3:27 PM To: IBM-MAIN@bama.ua.edu Subject: TOD clock format It's been a while since I did an STCK and looked at the results. ISTR that the last five or so nibbles were always zero; now

TOD clock format

2012-01-30 Thread Phil Smith
It's been a while since I did an STCK and looked at the results. ISTR that the last five or so nibbles were always zero; now they aren't. I assume that's added granularity to reduce repeated timestamps from STCKs close together (on the same processor), though still perhaps not enough to avoid th