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Re: Register file splits, a new look.

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On 2/10/2012 12:07 AM, nmm1@cam.ac.uk wrote:
> In article<21254419.964.1328818372560.JavaMail.geo-discussion-forums@yqad38>,
> MitchAlsup<MitchAlsup@aol.com>  wrote:
>>
>> In several machines I have worked on, the register files (plus reorder
>> buffers, and buffering) were bigger than the computational units
>> attached to them! All of these were separate file machines. A lot of
>> power is heading down this hole.
>
> Yes.  It's one of the reasons that I think we should stop digging
> and look for a way out.  My understanding is that most of that is
> to attempt to maximise the performance of serial, in-order code,
> by making the low-level parallelism and out-of-order logic entirely
> transparent.  I think that's a mug's game, and the only solution is
> to move to better ISAs which, in turn, needs us to move to better
> programming paradigms and languages.

If those "better ISAs" require significantly larger register files, then 
they may lose.

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Register file splits, a new look. Brett Davis <ggtgp@yahoo.com> - 2012-02-06 06:33 -0600
  Re: Register file splits, a new look. MitchAlsup <MitchAlsup@aol.com> - 2012-02-06 09:29 -0800
    Re: Register file splits, a new look. Brett Davis <ggtgp@yahoo.com> - 2012-02-07 07:08 -0600
  Re: Register file splits, a new look. torbenm@diku.dk (Torben Ægidius Mogensen) - 2012-02-09 11:19 +0100
    Re: Register file splits, a new look. MitchAlsup <MitchAlsup@aol.com> - 2012-02-09 12:12 -0800
      Re: Register file splits, a new look. "Paul A. Clayton" <paaronclayton@gmail.com> - 2012-02-09 15:27 -0800
        Re: Register file splits, a new look. MitchAlsup <MitchAlsup@aol.com> - 2012-02-09 15:52 -0800
      Re: Register file splits, a new look. nmm1@cam.ac.uk - 2012-02-10 08:07 +0000
        Re: Register file splits, a new look. "Andy (Super) Glew" <andy@SPAM.comp-arch.net> - 2012-02-10 06:37 -0800
      Re: Register file splits, a new look. Terje Mathisen <"terje.mathisen at tmsw.no"> - 2012-02-10 09:36 +0100
      Re: Register file splits, a new look. Brett Davis <ggtgp@yahoo.com> - 2012-02-10 12:22 -0600
        Re: Register file splits, a new look. MitchAlsup <MitchAlsup@aol.com> - 2012-02-10 12:26 -0800
          Re: Register file splits, a new look. Brett Davis <ggtgp@yahoo.com> - 2012-02-11 07:25 -0600
            Re: Register file splits, a new look. Brett Davis <ggtgp@yahoo.com> - 2012-02-16 17:17 -0600
            Re: Register file splits, a new look. MitchAlsup <MitchAlsup@aol.com> - 2012-02-16 16:25 -0800
              Re: Register file splits, a new look. Brett Davis <ggtgp@yahoo.com> - 2012-02-17 14:08 -0600
                Re: Register file splits, a new look. MitchAlsup <MitchAlsup@aol.com> - 2012-02-28 08:54 -0800
                Re: Register file splits, a new look. Brett Davis <ggtgp@yahoo.com> - 2012-02-28 19:33 -0600

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