From: ron minnich <rminnich@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] Barrelfish
Date: Fri, 16 Oct 2009 11:17:21 -0700 [thread overview]
Message-ID: <13426df10910161117r238823aey38b5328d58824d5c@mail.gmail.com> (raw)
In-Reply-To: <20091016170316.GA3135@nipl.net>
On Fri, Oct 16, 2009 at 10:03 AM, Sam Watkins <sam@nipl.net> wrote:
> So it would only be a problem supposing that a significant part of the program
> is unparallelizable. I can think of many many tasks where "Amdahl's law" is
> not going to be a problem at all, for a properly designed system.
>
> For example if I had a thousand processors I might raytrace complex scenes for
> an animated game at 100 fps, or do complex dsp over a 2 hour audio track in one
> millisecond.
Yes, if you had that few processors, it might seem easy.
It gets somewhat harder when you have, say, 128,000. Insignificant
bits of code that were not even visible suddenly dominate the time.
ron
next prev parent reply other threads:[~2009-10-16 18:17 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-14 19:09 Tim Newsham
2009-10-14 19:54 ` Roman Shaposhnik
2009-10-14 21:21 ` Tim Newsham
2009-10-14 21:33 ` Lyndon Nerenberg (VE6BBM/VE7TFX)
2009-10-14 21:42 ` Noah Evans
2009-10-14 21:45 ` erik quanstrom
2009-10-14 21:57 ` Noah Evans
2009-10-14 22:10 ` Eric Van Hensbergen
2009-10-14 22:21 ` Noah Evans
2009-10-15 1:03 ` David Leimbach
2009-10-15 1:50 ` Roman Shaposhnik
2009-10-15 2:12 ` Eric Van Hensbergen
2009-10-15 10:53 ` Sam Watkins
2009-10-15 11:50 ` Richard Miller
2009-10-15 12:00 ` W B Hacker
2009-10-16 17:03 ` Sam Watkins
2009-10-16 18:17 ` ron minnich [this message]
2009-10-16 18:39 ` Wes Kussmaul
2009-10-17 12:42 ` Roman Shaposhnik
2009-10-15 11:56 ` Josh Wood
2009-10-15 13:11 ` hiro
2009-10-15 15:05 ` David Leimbach
2009-10-18 1:15 ` Roman Shaposhnik
2009-10-18 3:15 ` Bakul Shah
[not found] ` <e763acc10910180606q1312ff7cw9a465d6af39c0fbe@mail.gmail.com>
2009-10-18 13:22 ` Roman Shaposhnik
2009-10-18 19:18 ` Bakul Shah
2009-10-18 20:12 ` ron minnich
2009-10-20 0:04 ` [9fans] Parallelism is over a barrel(fish)? Lyndon Nerenberg (VE6BBM/VE7TFX)
2009-10-20 1:11 ` W B Hacker
2009-10-14 21:36 ` [9fans] Barrelfish Eric Van Hensbergen
2009-10-15 2:05 ` Roman Shaposhnik
2009-10-15 2:17 ` Eric Van Hensbergen
2009-10-15 3:32 ` Tim Newsham
2009-10-15 3:59 ` Eric Van Hensbergen
2009-10-15 17:39 ` Tim Newsham
2009-10-15 18:28 ` Christopher Nielsen
2009-10-15 18:55 ` W B Hacker
[not found] <<20091015105328.GA18947@nipl.net>
2009-10-15 13:27 ` erik quanstrom
2009-10-15 13:40 ` Richard Miller
2009-10-16 17:20 ` Sam Watkins
2009-10-16 18:18 ` Latchesar Ionkov
2009-10-19 15:26 ` Sam Watkins
2009-10-19 15:33 ` andrey mirtchovski
2009-10-19 15:50 ` ron minnich
2009-10-16 21:17 ` Jason Catena
2009-10-17 20:58 ` Dave Eckhardt
2009-10-18 2:09 ` Jason Catena
2009-10-18 16:02 ` Dave Eckhardt
2009-10-17 18:45 ` Eris Discordia
2009-10-17 21:07 ` Steve Simon
2009-10-17 21:18 ` Eric Van Hensbergen
2009-10-18 8:48 ` Eris Discordia
2009-10-18 8:44 ` Eris Discordia
2009-10-19 15:57 ` Sam Watkins
2009-10-19 16:03 ` ron minnich
2009-10-19 16:46 ` Russ Cox
2009-10-20 2:16 ` matt
2009-10-20 9:15 ` Steve Simon
2009-10-21 15:43 ` Sam Watkins
2009-10-21 16:11 ` Russ Cox
2009-10-21 16:37 ` Sam Watkins
2009-10-21 18:01 ` ron minnich
2009-10-28 15:37 ` matt
[not found] ` <A90043D02D52B2CBF2804FA4@192.168.1.2>
2009-10-18 0:06 ` ron minnich
2009-10-18 0:54 ` Roman Shaposhnik
[not found] <<207092dc429fe476c2046d537aeaa400@hamnavoe.com>
2009-10-15 13:52 ` erik quanstrom
2009-10-15 15:07 ` David Leimbach
2009-10-15 15:21 ` roger peppe
2009-10-16 17:21 ` Sam Watkins
2009-10-16 23:39 ` Nick LaForge
2009-10-18 1:12 ` Roman Shaposhnik
2009-10-19 14:14 ` matt
2009-10-19 16:00 ` Sam Watkins
[not found] <<4AD70EE9.1010208@conducive.org>
2009-10-15 13:52 ` erik quanstrom
[not found] <<3e1162e60910150805q2ea3f682w688299a39274051c@mail.gmail.com>
2009-10-15 15:28 ` erik quanstrom
[not found] <<20091016172030.GB3135@nipl.net>
2009-10-16 18:34 ` erik quanstrom
[not found] <<d50d7d460910161417w45b5c675p8740315aaf6861f@mail.gmail.com>
2009-10-16 22:25 ` erik quanstrom
[not found] <<20091018031508.717CE5B30@mail.bitblocks.com>
2009-10-19 13:44 ` erik quanstrom
2009-10-19 14:36 ` David Leimbach
[not found] <<20091019155738.GB13857@nipl.net>
2009-10-19 16:05 ` erik quanstrom
2009-10-19 16:34 ` Sam Watkins
2009-10-19 17:30 ` ron minnich
2009-10-19 17:57 ` W B Hacker
2009-10-19 18:14 ` David Leimbach
[not found] <<4ADC7439.3060502@maht0x0r.net>
2009-10-19 16:13 ` erik quanstrom
2009-10-19 18:23 ` tlaronde
2009-10-20 1:38 ` matt
2009-10-20 1:58 ` Eris Discordia
2009-10-20 2:17 ` matt
[not found] <<20091019182352.GA1688@polynum.com>
2009-10-19 18:48 ` erik quanstrom
[not found] <<4ADD147A.4090801@maht0x0r.net>
2009-10-20 2:11 ` erik quanstrom
2009-10-20 2:33 ` matt
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