From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Loops and parallel execution
Date: Tue, 25 Jan 2011 22:32:57 +0100
Date: 2011-01-25T22:32:55+01:00 [thread overview]
Message-ID: <1ge2i0esmav4i$.1jv4tflkkh9rf.dlg@40tude.net> (raw)
In-Reply-To: 4d3f0a1d$0$6993$9b4e6d93@newsspool4.arcor-online.net
On Tue, 25 Jan 2011 18:36:29 +0100, Georg Bauhaus wrote:
> If a compiler detects two independent paths inside a loop,
I don't see any application for this. Can you remember the last time you
wrote such loop? I cannot.
The Occam's par-statement could be a better candidate, but I don't see how
this could be useful under a modern general-purpose OS with their
"vertical" parallelism, when each task is assigned to one core. The thing
you propose is "horizontal" parallelism, when a task/process would run on
all cores simultaneously. Inmos' Occam ran under no true OS, and the
processor architecture was well suited for such ad-hoc parallelism. Modern
processors are very different from T805 and I doubt that they would allow
an efficient implementation of this.
--
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de
next prev parent reply other threads:[~2011-01-25 21:32 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-25 15:40 Loops and parallel execution Georg Bauhaus
2011-01-25 16:37 ` Dmitry A. Kazakov
2011-01-25 17:36 ` Georg Bauhaus
2011-01-25 17:38 ` Georg Bauhaus
2011-01-25 21:32 ` Dmitry A. Kazakov [this message]
2011-01-25 22:07 ` Georg Bauhaus
2011-01-26 1:31 ` Yannick Duchêne (Hibou57)
2011-01-26 9:04 ` Dmitry A. Kazakov
2011-01-26 1:06 ` Yannick Duchêne (Hibou57)
2011-01-26 10:08 ` Dmitry A. Kazakov
2011-01-31 13:01 ` Paul Colin Gloster
2011-02-06 20:06 ` Yannick Duchêne (Hibou57)
2011-02-07 11:43 ` Nicholas Paul Collin Gloster
2011-01-26 8:46 ` Egil Høvik
2011-01-26 10:47 ` Georg Bauhaus
2011-02-14 23:27 ` Tuck
2011-02-15 21:10 ` Georg Bauhaus
2011-01-26 11:29 ` Peter C. Chapin
2011-01-26 21:57 ` Randy Brukardt
2011-01-27 23:01 ` tmoran
2011-01-29 0:23 ` Randy Brukardt
2011-02-06 20:10 ` Yannick Duchêne (Hibou57)
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