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Subject: Bit Scan Timings

Author: Matt Taylor

Date: 23:40:42 12/20/02

OK, after a bit of work cleaning up an undergrad project (the buggy source
highlighter that I used to convert the code -> html), I've got the code up.

Timings:
http://65.186.75.165/~mtaylor/bitscan_athlon.html

Code:
http://65.186.75.165/~mtaylor/ipcbench.c.html
http://65.186.75.165/~mtaylor/bitscan.c.html

I'll run results for an original K6 tomorrow just as a matter of curiousity. I
don't have access to -ANY- Intel machines right now, so I can't get Intel data.
If anyone wants to help out, I can toss the binary up on FTP. Offhand I don't
think it will run terribly well on a P4 and possibly not very well on previous
Intel processors.

-Matt

• Re: Bit Scan Timings Matt Taylor 23:37:54 12/21/02
  • Re: Bit Scan Timings -- possible artifact? Walter Faxon 11:55:31 12/22/02
    • Bugs, Bugs, Bugs Matt Taylor 22:45:16 12/23/02
    • Re: Bit Scan Timings -- possible artifact? Matt Taylor 17:10:45 12/22/02
      • Re: Bit Scan Timings -- possible artifact? Walter Faxon 22:42:31 12/22/02
        • Re: Bit Scan Timings -- possible artifact? Matt Taylor 11:53:34 12/23/02
          • Preliminary 14% Increase in Speed! Matt Taylor 12:10:29 12/23/02
            • Re: Preliminary 14% Increase in Speed! Walter Faxon 21:29:42 12/23/02
        • Re: Bit Scan Timings -- possible artifact? Matt Taylor 22:57:40 12/22/02
          • Re: Bit Scan Timings -- possible artifact? Walter Faxon 00:01:22 12/23/02
• Re: Bit Scan Timings Gerd Isenberg 05:41:07 12/21/02
  • Re: Bit Scan Timings Matt Taylor 09:22:24 12/21/02
• Re: Bit Scan Timings Walter Faxon 02:16:18 12/21/02
  • Re: Bit Scan Timings Matt Taylor 09:20:19 12/21/02
    • Re: Bit Scan Timings Walter Faxon 01:53:06 12/22/02

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