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Re: Opcode frequency process/tools?

Cross-posted to 2 groups.

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Jim Leonard <mobygamer@nospicedham.gmail.com> writes:
<Big snip>
>The end results were really fascinating, not only from the frequency
>counts but also from looking at the execution history.  For one, I
>used to think that the difference between slow and faster 3-D programs
>in the 1989-1991 era were due to being able to optimize out MULs, but
>it turns all but one of them do the same 9 matrix IMULs per rotation
>that you would expect.  (The one holdout that got away with only 6 was
>a driving game, which should make sense, but I remember rotation
>around all 3 axis during gameplay so it must only do extra MULs when
>it has to.)
>
>Another interesting tidbit is that almost none of them had a
>consistent inner loop frequency -- most did the calcs at something
>reasonable like 30 or 60Hz, but one did only the system default of
>18.2 which means the framerate will never go higher than that... one
>was 250Hz (!) and the most interesting of all was one that didn't have
>a fixed inner loop frequency, it would just run as fast as it could
>and would check the time constantly and perform calcs based on how
>much time had gone by since the last iteration.

Hi,

   Thanks for the report.   Good information.

Regards,

Steve N.

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Thread

Opcode frequency process/tools? Jim Leonard <mobygamer@nospicedham.gmail.com> - 2011-10-26 11:41 -0700
  Re: Opcode frequency process/tools? Terje Mathisen <"terje.mathisen at tmsw.no"@giganews.com> - 2011-10-26 21:09 +0200
    Re: Opcode frequency process/tools? Ross Ridge <rridge@nospicedham.csclub.uwaterloo.ca> - 2011-10-26 15:54 -0400
    Re: Opcode frequency process/tools? Jim Leonard <mobygamer@nospicedham.gmail.com> - 2011-10-28 07:07 -0700
      Re: Opcode frequency process/tools? Terje Mathisen <"terje.mathisen at tmsw.no"@giganews.com> - 2011-10-29 02:46 +0200
        Re: Opcode frequency process/tools? Jim Leonard <mobygamer@nospicedham.gmail.com> - 2011-10-31 07:20 -0700
          Re: Opcode frequency process/tools? Terje Mathisen <"terje.mathisen at tmsw.no"@nospicedham.giganews.com> - 2011-10-31 19:22 +0100
      Re: Opcode frequency process/tools? Jim Leonard <mobygamer@nospicedham.gmail.com> - 2011-10-31 07:41 -0700
        Re: Opcode frequency process/tools? Bogus@Embarq.com (Steve) - 2011-11-01 13:13 +0000
  Re: Opcode frequency process/tools? "Rod Pemberton" <do_not_have@nospicedham.noavailemail.cmm> - 2011-10-26 19:12 -0400
    Re: Opcode frequency process/tools? Jim Leonard <mobygamer@nospicedham.gmail.com> - 2011-10-28 07:11 -0700
   Re: Opcode frequency process/tools?  hopcode <hopcode@nospicedham.nulnulul.de> - 2011-10-27 01:18 +0200
    Re: Opcode frequency process/tools? Jim Leonard <mobygamer@nospicedham.gmail.com> - 2011-10-28 07:13 -0700
  Re: Opcode frequency process/tools? Hugh Aguilar <hughaguilar96@nospicedham.yahoo.com> - 2011-10-26 22:28 -0700
    Re: Opcode frequency process/tools? "Rod Pemberton" <do_not_have@nospicedham.noavailemail.cmm> - 2011-10-27 13:37 -0400
      Re: Opcode frequency process/tools? Hugh Aguilar <hughaguilar96@nospicedham.yahoo.com> - 2011-10-27 22:49 -0700
    Re: Opcode frequency process/tools? Jim Leonard <mobygamer@nospicedham.gmail.com> - 2011-10-28 07:24 -0700
  Re: Opcode frequency process/tools? Phil Carmody <thefatphil_demunged@nospicedham.yahoo.co.uk> - 2011-10-27 14:00 +0300
    Re: Opcode frequency process/tools? "Rod Pemberton" <do_not_have@nospicedham.noavailemail.cmm> - 2011-10-27 13:38 -0400
      Re: Opcode frequency process/tools? Robert Wessel <robertwessel2@nospicedham.yahoo.com> - 2011-10-27 14:51 -0500
        Re: Opcode frequency process/tools? Hugh Aguilar <hughaguilar96@nospicedham.yahoo.com> - 2011-10-27 22:40 -0700

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