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From: Tim Newsham <newsham@lava.net>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] grid computing -- high performance?
Date: Fri, 24 Sep 2004 09:45:02 -1000	[thread overview]
Message-ID: <Pine.BSI.4.58.0409240937591.15930@malasada.lava.net> (raw)
In-Reply-To: <Pine.LNX.4.58.0409241324260.26762@linux.site>

> > Do people use the plan 9 compilers?  It doesn't seem like the p9 compilers
> > are suited for high performance number crunching (not that I think they
> > are bad compilers).
>
> And you know this ... how?

I don't, entirely.  I'm partially asking about the quality of
the compiler code (perhaps indirectly).

The compiler implementation paper mentioned that the compilers emit
"medium quality" code. I assume that they were targetted towards their
purpose -- system code.  Because of these factors, I assume (and that is
all it is, an assumption) that optimizations that would be important for
numerical computation but not very important for system programming didn't
receive much attention.  Things like blocking, loop swapping, instruction
reordering, cache hints, combining operations into SIMD instructions, etc.
Is this not the case?

I'm not trying to imply that plan 9 is not a good system, or that
the compilers are poorly written.  I'm just trying to learn more
about the system.

> ron

Tim N.


  reply	other threads:[~2004-09-24 19:45 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-09-06 19:43 [9fans] 3D glenda competition andrey mirtchovski
2004-09-07 14:17 ` Ronald G. Minnich
2004-09-16 17:01 ` Dave Lukes
2004-09-16 22:57   ` Jack Johnson
2004-09-22 21:53     ` n2 deep
2004-09-23 13:09       ` Jason Gurtz
2004-09-23 20:13         ` [9fans] alef post mortem? Tim Newsham
2004-09-23 20:58           ` Russ Cox
2004-09-24  1:00             ` Kenji Okamoto
2004-09-24  5:24             ` Martin C.Atkins
2004-09-24  5:39               ` Kenji Okamoto
2004-09-24  1:13           ` andrey mirtchovski
2004-09-24 19:16             ` [9fans] grid computing -- high performance? Tim Newsham
2004-09-24 19:25               ` Ronald G. Minnich
2004-09-24 19:45                 ` Tim Newsham [this message]
2004-09-24 20:39                   ` Ronald G. Minnich
2004-09-24 21:38                   ` geoff
2004-09-25  2:54                     ` boyd, rounin
2004-09-25  5:56                       ` Bruce Ellis
2004-09-25 14:01                         ` andrey mirtchovski
2004-09-24 19:32               ` Eric Van Hensbergen
2004-09-24 19:47                 ` rog
2004-09-24 19:35               ` Christian Grothaus
2004-09-24 22:14                 ` andrey mirtchovski
2004-09-24 20:23               ` jmk
2004-09-24 21:39                 ` Tim Newsham
2004-09-24 22:14                   ` jmk
2004-09-24 22:13               ` andrey mirtchovski
2004-09-24 22:52                 ` Ronald G. Minnich
2004-09-24 23:11                   ` geoff
2004-09-27 13:51                     ` Ronald G. Minnich
2004-09-27 18:45                       ` geoff
2004-09-27 18:59                         ` boyd, rounin
2004-09-25  2:47               ` boyd, rounin

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