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Groups > alt.folklore.computers > #222688
| From | Anne & Lynn Wheeler <lynn@garlic.com> |
|---|---|
| Newsgroups | alt.folklore.computers |
| Subject | Re: do some Americans write their 1's in this way ? |
| Date | 2022-11-15 08:42 -1000 |
| Organization | Wheeler&Wheeler |
| Message-ID | <87pmdof49p.fsf@localhost> (permalink) |
| References | (16 earlier) <mddeduaw3sw.fsf@panix5.panix.com> <tknr5q$157o0$1@dont-email.me> <927358844.689954656.439593.peter_flass-yahoo.com@news.eternal-september.org> <tktvc0$1q5ea$4@dont-email.me> <1981072631.690151705.598930.peter_flass-yahoo.com@news.eternal-september.org> |
Peter Flass <peter_flass@yahoo.com> writes: > I think most do these days. IBM mainframe memory corrects (IIRC) single-bit > errors and detects multiple-bit errors. more than that for some time, from archived 6sep2001 afc post, 3090 (mid/late 80s) had 64/80 ECC memory, detect (up to) all 16bit errors and correct (up to) all 15bit errors http://www.garlic.com/~lynn/2001j.html#13 other trivia: after joining IBM, I got asked to help with 370/195 hyperthreading ... hypertreading mention in this post about end of acs/360 https://people.cs.clemson.edu/~mark/acs_end.html 195 out-of-order, but no branch-prediction and speculative execution, so conditional branches drained pipeline ... and most codes ran at half 195 rated speed. simulating multiprocessor with two i-streams (running at half rated speed) could keep execution units busy ... modulo MVT/MVS claimed two-processor was 1.2-1.5 throughput of single processor (because of multiprocessor software overhead and lock contention). they also said that big difference between 360/195 and 370/195 (in addition to the few new instructions) was adding 370 hardware instruction retry ... 195 had so many circuits that mean-time between a system transient hardware error was a few hrs. project was canceled when decision was made to add virtual memory to all 370s (and it wasn't justified to do it for 195). trivia: decade ago, i was asked if I could track down the virtual memory decision ... archived afc post from decade ago http://www.garlic.com/~lynn/2011d.html#73 ... basically MVT storage management was so bad that regions had to be specified four times larger than actually used ... result was 1mbyte 370/165 typically only running four concurrent executing regions ... not sufficient to keep it busy/justified. Going to virtual memory would allow number of concurrent regions to be increased by four times with little or no paging. -- virtualization experience starting Jan1968, online at home since Mar1970
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Re: do some Americans write their 1's in this way ? "Kerr-Mudd, John" <admin@127.0.0.1> - 2022-11-06 18:18 +0000
Re: do some Americans write their 1's in this way ? Dan Espen <dan1espen@gmail.com> - 2022-11-06 17:10 -0500
Re: do some Americans write their 1's in this way ? Dan Espen <dan1espen@gmail.com> - 2022-11-06 17:18 -0500
Re: do some Americans write their 1's in this way ? scott@slp53.sl.home (Scott Lurndal) - 2022-11-06 22:22 +0000
Re: do some Americans write their 1's in this way ? lar3ryca <larry@invalid.ca> - 2022-11-06 22:32 -0600
Re: do some Americans write their 1's in this way ? Dan Espen <dan1espen@gmail.com> - 2022-11-06 23:46 -0500
Re: do some Americans write their 1's in this way ? Ken Blake <Ken@invalid.news.com> - 2022-11-08 15:03 -0700
Re: do some Americans write their 1's in this way ? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2022-11-08 22:42 +0000
Re: do some Americans write their 1's in this way ? Dan Espen <dan1espen@gmail.com> - 2022-11-08 22:49 -0500
Re: do some Americans write their 1's in this way ? Ken Blake <Ken@invalid.news.com> - 2022-11-09 13:48 -0700
Re: do some Americans write their 1's in this way ? lar3ryca <larry@invalid.ca> - 2022-11-08 23:21 -0600
Re: do some Americans write their 1's in this way ? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2022-11-09 18:36 +0000
Re: do some Americans write their 1's in this way ? lar3ryca <larry@invalid.ca> - 2022-11-09 13:06 -0600
Re: do some Americans write their 1's in this way ? greymaus <greymaus@dmaus.org> - 2022-11-09 19:49 +0000
Re: do some Americans write their 1's in this way ? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2022-11-09 21:32 +0000
Re: do some Americans write their 1's in this way ? lar3ryca <larry@invalid.ca> - 2022-11-09 23:29 -0600
Re: do some Americans write their 1's in this way ? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2022-11-10 19:08 +0000
Re: do some Americans write their 1's in this way ? lar3ryca <larry@invalid.ca> - 2022-11-11 22:16 -0600
Re: do some Americans write their 1's in this way ? Peter Flass <peter_flass@yahoo.com> - 2022-11-10 06:40 -0700
Re: do some Americans write their 1's in this way ? D.J. <chucktheouch@gmnol.com> - 2022-11-10 10:57 -0600
Re: do some Americans write their 1's in this way ? lar3ryca <larry@invalid.ca> - 2022-11-09 23:14 -0600
Re: do some Americans write their 1's in this way ? Ken Blake <Ken@invalid.news.com> - 2022-11-09 13:46 -0700
Re: do some Americans write their 1's in this way ? Ken Blake <Ken@invalid.news.com> - 2022-11-08 14:52 -0700
Re: do some Americans write their 1's in this way ? Dan Espen <dan1espen@gmail.com> - 2022-11-08 22:44 -0500
Re: do some Americans write their 1's in this way ? Peter Flass <peter_flass@yahoo.com> - 2022-11-09 06:04 -0700
Re: do some Americans write their 1's in this way ? Dan Espen <dan1espen@gmail.com> - 2022-11-09 09:06 -0500
Re: do some Americans write their 1's in this way ? Tak To <takto@alum.mit.eduxx> - 2022-11-09 13:11 -0500
Re: do some Americans write their 1's in this way ? Ken Blake <Ken@invalid.news.com> - 2022-11-09 15:35 -0700
Re: do some Americans write their 1's in this way ? Peter Flass <peter_flass@yahoo.com> - 2022-11-10 06:40 -0700
Re: do some Americans write their 1's in this way ? Tak To <takto@alum.mit.eduxx> - 2022-11-10 12:04 -0500
Re: do some Americans write their 1's in this way ? Vir Campestris <vir.campestris@invalid.invalid> - 2022-11-10 21:09 +0000
Re: do some Americans write their 1's in this way ? Bob Eager <news0009@eager.cx> - 2022-11-10 23:18 +0000
Re: do some Americans write their 1's in this way ? Rich Alderson <news@alderson.users.panix.com> - 2022-11-10 22:45 -0500
Re: do some Americans write their 1's in this way ? Vir Campestris <vir.campestris@invalid.invalid> - 2022-11-11 21:30 +0000
Re: do some Americans write their 1's in this way ? Bob Eager <news0009@eager.cx> - 2022-11-11 22:47 +0000
Re: do some Americans write their 1's in this way ? Tak To <takto@alum.mit.eduxx> - 2022-11-11 19:52 -0500
Re: do some Americans write their 1's in this way ? Bob Eager <news0009@eager.cx> - 2022-11-12 10:16 +0000
Re: do some Americans write their 1's in this way ? Peter Flass <peter_flass@yahoo.com> - 2022-11-11 18:16 -0700
Re: do some Americans write their 1's in this way ? Peter Moylan <peter@pmoylan.org.invalid> - 2022-11-12 20:50 +1100
Re: do some Americans write their 1's in this way ? lar3ryca <larry@invalid.ca> - 2022-11-12 08:07 -0600
Re: do some Americans write their 1's in this way ? Peter Flass <peter_flass@yahoo.com> - 2022-11-12 11:42 -0700
Re: do some Americans write their 1's in this way ? Thomas Koenig <tkoenig@netcologne.de> - 2022-11-12 19:38 +0000
Re: do some Americans write their 1's in this way ? Peter Moylan <peter@pmoylan.org.invalid> - 2022-11-13 10:32 +1100
Re: do some Americans write their 1's in this way ? gareth evans <headstone255@yahoo.com> - 2022-11-12 15:32 +0000
Re: do some Americans write their 1's in this way ? Tak To <takto@alum.mit.eduxx> - 2022-11-12 12:55 -0500
Re: do some Americans write their 1's in this way ? Ahem A Rivet's Shot <steveo@eircom.net> - 2022-11-12 18:42 +0000
Re: do some Americans write their 1's in this way ? Thomas Koenig <tkoenig@netcologne.de> - 2022-11-12 19:25 +0000
Re: do some Americans write their 1's in this way ? Tak To <takto@alum.mit.eduxx> - 2022-11-12 14:41 -0500
Re: do some Americans write their 1's in this way ? Vir Campestris <vir.campestris@invalid.invalid> - 2022-11-14 17:36 +0000
Re: do some Americans write their 1's in this way ? Thomas Koenig <tkoenig@netcologne.de> - 2022-11-15 06:05 +0000
Re: do some Americans write their 1's in this way ? Peter Flass <peter_flass@yahoo.com> - 2022-11-12 14:38 -0700
Re: do some Americans write their 1's in this way ? Ahem A Rivet's Shot <steveo@eircom.net> - 2022-11-13 05:41 +0000
Re: do some Americans write their 1's in this way ? Richard Heathfield <rjh@cpax.org.uk> - 2022-11-12 20:53 +0000
Re: do some Americans write their 1's in this way ? Ahem A Rivet's Shot <steveo@eircom.net> - 2022-11-13 05:42 +0000
Re: do some Americans write their 1's in this way ? "Kerr-Mudd, John" <admin@127.0.0.1> - 2022-11-13 09:55 +0000
Re: do some Americans write their 1's in this way ? Tak To <takto@alum.mit.eduxx> - 2022-11-12 12:36 -0500
Re: do some Americans write their 1's in this way ? Thomas Koenig <tkoenig@netcologne.de> - 2022-11-12 18:08 +0000
Re: do some Americans write their 1's in this way ? Peter Flass <peter_flass@yahoo.com> - 2022-11-12 11:42 -0700
Re: do some Americans write their 1's in this way ? Tak To <takto@alum.mit.eduxx> - 2022-11-12 14:14 -0500
Re: do some Americans write their 1's in this way ? Robin Vowels <robin.vowels@gmail.com> - 2022-11-14 20:19 -0800
Re: do some Americans write their 1's in this way ? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2022-11-12 19:42 +0000
Re: do some Americans write their 1's in this way ? Tak To <takto@alum.mit.eduxx> - 2022-11-12 14:59 -0500
Re: do some Americans write their 1's in this way ? "Kerr-Mudd, John" <admin@127.0.0.1> - 2022-11-13 10:04 +0000
Re: do some Americans write their 1's in this way ? greymaus <greymaus@dmaus.org> - 2022-11-13 17:02 +0000
Re: do some Americans write their 1's in this way ? Ahem A Rivet's Shot <steveo@eircom.net> - 2022-11-13 17:57 +0000
Re: do some Americans write their 1's in this way ? "Kerr-Mudd, John" <admin@127.0.0.1> - 2022-11-13 21:03 +0000
Re: do some Americans write their 1's in this way ? snipeco.2@gmail.com (Sn!pe) - 2022-11-13 21:55 +0000
Re: do some Americans write their 1's in this way ? Peter Flass <peter_flass@yahoo.com> - 2022-11-13 15:31 -0700
Re: do some Americans write their 1's in this way ? Clark G <clarkm.geimsler@ieeemmm.org> - 2022-11-22 15:39 +0000
Re: do some Americans write their 1's in this way ? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2022-11-14 02:42 +0000
Re: do some Americans write their 1's in this way ? Mark Triggers <mark.triggers@gmail.com> - 2022-11-14 06:33 -0800
Re: do some Americans write their 1's in this way ? Charles Richmond <codescott@aquaporin4.com> - 2022-11-17 02:26 -0600
Re: do some Americans write their 1's in this way ? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2022-11-17 18:37 +0000
Re: do some Americans write their 1's in this way ? scott@slp53.sl.home (Scott Lurndal) - 2022-11-17 19:04 +0000
Re: do some Americans write their 1's in this way ? D.J. <chucktheouch@gmnol.com> - 2022-11-21 10:18 -0600
Re: do some Americans write their 1's in this way ? Andreas Eder <a_eder_muc@web.de> - 2022-11-19 16:10 +0100
Re: do some Americans write their 1's in this way ? Peter Flass <peter_flass@yahoo.com> - 2022-11-12 14:38 -0700
Re: do some Americans write their 1's in this way ? Tak To <takto@alum.mit.eduxx> - 2022-11-13 14:50 -0500
Re: do some Americans write their 1's in this way ? Bob Eager <news0009@eager.cx> - 2022-11-12 10:19 +0000
Re: do some Americans write their 1's in this way ? "Kerr-Mudd, John" <admin@127.0.0.1> - 2022-11-12 11:22 +0000
Re: do some Americans write their 1's in this way ? gareth evans <headstone255@yahoo.com> - 2022-11-12 15:35 +0000
Re: do some Americans write their 1's in this way ? Snidely <snidely.too@gmail.com> - 2022-11-11 18:55 -0800
Re: do some Americans write their 1's in this way ? Snidely <snidely.too@gmail.com> - 2022-11-11 18:57 -0800
Re: do some Americans write their 1's in this way ? Bob Eager <news0009@eager.cx> - 2022-11-12 10:18 +0000
Re: do some Americans write their 1's in this way ? "Anders D. Nygaard" <news2012adn@gmail.com> - 2022-11-10 22:45 +0100
Re: do some Americans write their 1's in this way ? Rich Alderson <news@alderson.users.panix.com> - 2022-11-10 22:47 -0500
Re: do some Americans write their 1's in this way ? Peter Moylan <peter@pmoylan.org.invalid> - 2022-11-12 21:05 +1100
Re: do some Americans write their 1's in this way ? Peter Flass <peter_flass@yahoo.com> - 2022-11-12 07:06 -0700
Re: do some Americans write their 1's in this way ? Vir Campestris <vir.campestris@invalid.invalid> - 2022-11-14 17:54 +0000
Re: do some Americans write their 1's in this way ? scott@slp53.sl.home (Scott Lurndal) - 2022-11-14 18:16 +0000
Re: do some Americans write their 1's in this way ? Peter Flass <peter_flass@yahoo.com> - 2022-11-14 13:51 -0700
Re: do some Americans write their 1's in this way ? Bob Eager <news0009@eager.cx> - 2022-11-14 21:49 +0000
Re: do some Americans write their 1's in this way ? scott@slp53.sl.home (Scott Lurndal) - 2022-11-14 22:07 +0000
Re: do some Americans write their 1's in this way ? Anne & Lynn Wheeler <lynn@garlic.com> - 2022-11-15 08:42 -1000
Re: do some Americans write their 1's in this way ? Charles Richmond <codescott@aquaporin4.com> - 2022-11-17 02:31 -0600
Re: do some Americans write their 1's in this way ? Bob Eager <news0009@eager.cx> - 2022-11-17 09:25 +0000
Re: do some Americans write their 1's in this way ? greymaus <greymaus@dmaus.org> - 2022-11-11 09:35 +0000
Re: do some Americans write their 1's in this way ? Peter Flass <peter_flass@yahoo.com> - 2022-11-11 10:11 -0700
Re: do some Americans write their 1's in this way ? Rich Alderson <news@alderson.users.panix.com> - 2022-11-10 22:42 -0500
Re: do some Americans write their 1's in this way ? Douglas Wells <nr201504@gmail.com> - 2022-11-11 11:38 -0500
Re: do some Americans write their 1's in this way ? Tak To <takto@alum.mit.eduxx> - 2022-11-11 20:03 -0500
Re: do some Americans write their 1's in this way ? Ken Blake <Ken@invalid.news.com> - 2022-11-09 14:16 -0700
Re: do some Americans write their 1's in this way ? Ken Blake <Ken@invalid.news.com> - 2022-11-09 14:07 -0700
Re: do some Americans write their 1's in this way ? Ken Blake <Ken@invalid.news.com> - 2022-11-08 14:42 -0700
Re: do some Americans write their 1's in this way ? Dan Espen <dan1espen@gmail.com> - 2022-11-08 22:35 -0500
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