From: Jeffrey Carter <spam.jrcarter.not@spam.not.acm.org>
Subject: Re: basic question on Ada tasks and running on different cores
Date: Wed, 16 May 2012 18:06:49 -0700
Date: 2012-05-16T18:06:49-07:00 [thread overview]
Message-ID: <jp1ivb$o6m$1@adenine.netfront.net> (raw)
In-Reply-To: <jp1fnm$v56$1@munin.nbi.dk>
On 05/16/2012 05:11 PM, Randy Brukardt wrote:
>
> The problem is, if you're trying to implement fine-grained parallelism, you
> have to surround that code with some sort of scheduling mechanism, and that
> overhead means you aren't going to get anywhere near 100% of the CPU at any
> point.
The assumption here is that there are more tasks/threads/parallel things than
there are processors/cores. That's generally true now, but they way things are
going, it may not be true in the not-too-distant future (1-atom transistors
could make for a lot of cores). When you have a core per task you no longer need
scheduling.
--
Jeff Carter
"I blow my nose on you."
Monty Python & the Holy Grail
03
--- Posted via news://freenews.netfront.net/ - Complaints to news@netfront.net ---
next prev parent reply other threads:[~2012-05-17 1:06 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-06 7:38 basic question on Ada tasks and running on different cores Nasser M. Abbasi
2012-05-06 7:59 ` Gautier write-only
2012-05-06 10:02 ` Simon Wright
2012-05-06 10:31 ` Ludovic Brenta
2012-05-06 14:14 ` Robert A Duff
2012-05-06 16:07 ` Vinzent Hoefler
2012-05-06 19:43 ` Ludovic Brenta
[not found] ` <15qdq7df9cji7htp52i9d5f8sqsgmisc3b@invalid.netcom.com>
2012-05-06 21:24 ` Ludovic Brenta
2012-05-06 14:13 ` Robert A Duff
2012-05-07 7:36 ` anon
2012-05-08 7:08 ` Maciej Sobczak
2012-05-08 9:02 ` anon
2012-05-08 9:52 ` Ludovic Brenta
2012-05-09 12:28 ` anon
2012-05-10 2:20 ` Randy Brukardt
2012-05-11 2:38 ` NatarovVI
2012-05-11 8:30 ` Georg Bauhaus
2012-05-16 15:40 ` NatarovVI
2012-05-16 18:03 ` Georg Bauhaus
2012-05-12 0:33 ` Randy Brukardt
2012-05-12 10:57 ` Stephen Leake
2012-05-15 6:55 ` Randy Brukardt
2012-05-15 22:54 ` Shark8
2012-05-16 15:54 ` NatarovVI
2012-05-17 0:11 ` Randy Brukardt
2012-05-17 1:06 ` Jeffrey Carter [this message]
2012-05-17 6:50 ` Dmitry A. Kazakov
2012-05-18 4:12 ` Randy Brukardt
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox