From: Warner Losh <imp@bsdimp.com>
To: Peter Jeremy <peter@rulingia.com>
Cc: The Eunuchs Hysterical Society <tuhs@tuhs.org>
Subject: Re: [TUHS] core
Date: Tue, 19 Jun 2018 23:41:41 -0600 [thread overview]
Message-ID: <CANCZdfrxEipUKKN4BZzUm0NYSjUFJYuaFp8NA2Xgq+Eb+806sw@mail.gmail.com> (raw)
In-Reply-To: <20180620050454.GC91748@server.rulingia.com>
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On Tue, Jun 19, 2018 at 11:04 PM, Peter Jeremy <peter@rulingia.com> wrote:
> On 2018-Jun-20 08:55:05 +1000, David Arnold <davida@pobox.com> wrote:
> >Does the screen count as I/O?
>
> I was thinking about that as well. 1080p30 video is around 2MBps as H.264
> or
> about 140MBps as 6bpp raw. The former is negligible, the latter is still
> shy
> of the disparity in CPU power, especially if you take into account the GPU
> power needed to do the decoding.
>
> >I’d suggest that it’s just that the balance is (intentionally) quite
> different. If you squint right, a GPU could look like a channelized I/O
> controller.
>
> I agree. Even back then, there was a difference between
> commercial-oriented
> mainframes (the 1401 and 360/50 lineage - which stressed lots of I/O) and
> the
> scientific mainframes (709x, 360/85 - which stressed arithmetic
> capabilities).
>
So what could an old mainframe do as far as I/O was concerned? Google
didn't provide me a straight forward answer...
Warner
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next prev parent reply other threads:[~2018-06-20 5:42 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-15 15:25 Noel Chiappa
2018-06-15 23:05 ` Dave Horsfall
2018-06-15 23:22 ` Lyndon Nerenberg
2018-06-16 6:36 ` Dave Horsfall
2018-06-16 19:07 ` Clem Cole
2018-06-18 9:25 ` Tim Bradshaw
2018-06-19 20:45 ` Peter Jeremy
2018-06-19 22:55 ` David Arnold
2018-06-20 5:04 ` Peter Jeremy
2018-06-20 5:41 ` Warner Losh [this message]
2018-06-20 8:10 ` [TUHS] Old mainframe I/O speed (was: core) Greg 'groggy' Lehey
2018-06-20 16:33 ` Paul Winalski
2018-06-21 3:05 ` Peter Jeremy
2018-06-21 14:00 ` Paul Winalski
2018-06-21 14:49 ` Arrigo Triulzi
2018-06-21 20:39 ` Paul Winalski
2018-06-22 5:32 ` Erik E. Fair
2018-06-22 13:32 ` Clem Cole
2018-06-23 6:08 ` Dave Horsfall
2018-06-23 17:02 ` ron minnich
-- strict thread matches above, loose matches on Subject: below --
2018-06-21 22:44 [TUHS] core Nelson H. F. Beebe
2018-06-21 23:07 ` Grant Taylor via TUHS
2018-06-21 23:38 ` Toby Thain
2018-06-21 17:40 Noel Chiappa
2018-06-21 17:07 Nelson H. F. Beebe
2018-06-21 13:46 Doug McIlroy
2018-06-21 16:13 ` Tim Bradshaw
2018-06-20 20:11 Doug McIlroy
2018-06-20 23:53 ` Tim Bradshaw
2018-06-19 12:23 Noel Chiappa
2018-06-19 12:58 ` Clem Cole
2018-06-19 13:53 ` John P. Linderman
2018-06-21 14:09 ` Paul Winalski
2018-06-19 11:50 Doug McIlroy
[not found] <20180618121738.98BD118C087@mercury.lcs.mit.edu>
2018-06-18 21:13 ` Johnny Billquist
2018-06-18 17:56 Noel Chiappa
2018-06-18 18:51 ` Clem Cole
2018-06-18 14:51 Noel Chiappa
2018-06-18 14:58 ` Warner Losh
[not found] <mailman.1.1529287201.13697.tuhs@minnie.tuhs.org>
2018-06-18 5:58 ` Johnny Billquist
2018-06-18 12:39 ` Ronald Natalie
2018-06-17 21:18 Noel Chiappa
2018-06-17 17:58 Noel Chiappa
2018-06-18 9:16 ` Tim Bradshaw
2018-06-18 15:33 ` Tim Bradshaw
2018-06-17 14:36 Noel Chiappa
2018-06-17 15:58 ` Derek Fawcus
2018-06-16 22:57 Noel Chiappa
[not found] <mailman.1.1529175600.3826.tuhs@minnie.tuhs.org>
2018-06-16 22:14 ` Johnny Billquist
2018-06-16 22:38 ` Arthur Krewat
2018-06-17 0:15 ` Clem cole
2018-06-17 1:50 ` Johnny Billquist
2018-06-17 10:33 ` Ronald Natalie
2018-06-20 16:55 ` Paul Winalski
2018-06-20 21:35 ` Johnny Billquist
2018-06-20 22:24 ` Paul Winalski
2018-06-16 13:49 Noel Chiappa
2018-06-16 14:10 ` Clem Cole
2018-06-16 14:34 ` Lawrence Stewart
2018-06-16 15:28 ` Larry McVoy
2018-06-16 14:10 ` Steve Nickolas
2018-06-16 14:13 ` William Pechter
2018-06-16 13:37 Noel Chiappa
2018-06-16 18:59 ` Clem Cole
2018-06-17 12:15 ` Derek Fawcus
2018-06-17 17:33 ` Theodore Y. Ts'o
2018-06-17 19:50 ` Jon Forrest
2018-06-18 14:56 ` Clem Cole
2018-06-18 12:36 ` Tony Finch
2018-06-16 12:58 Doug McIlroy
2018-06-20 11:10 ` Dave Horsfall
2018-06-16 12:51 Noel Chiappa
2018-06-16 13:11 ` Clem cole
2018-06-15 11:19 A. P. Garcia
2018-06-15 13:50 ` Steffen Nurpmeso
2018-06-15 14:21 ` Clem Cole
2018-06-15 15:11 ` John P. Linderman
2018-06-15 15:21 ` Larry McVoy
2018-06-16 1:08 ` Greg 'groggy' Lehey
2018-06-16 2:00 ` Nemo Nusquam
2018-06-16 2:17 ` John P. Linderman
2018-06-16 3:06 ` Clem cole
2018-06-20 10:06 ` Dave Horsfall
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