Author: Andreas Guettinger
Date: 09:57:01 12/05/03
Go up one level in this thread
In case somebody is interested (and I highly doubt that) here are the values for
my PPC G4 (7400)
compiled with gcc -O3:
magic bitscan 2980130816 43.370
magic bitscan 2980130816 43.450
magic bitscan 2980130816 43.390
magic bitscan 2980130816 43.490
------------------------------
table 16 2980130816 20.030
table 16 2980130816 21.550
table 16 2980130816 20.290
table 16 2980130816 20.320
------------------------------
gerd 2980130816 28.980
gerd 2980130816 28.990
gerd 2980130816 30.520
gerd 2980130816 28.970
------------------------------
eugene 2980130816 34.050
eugene 2980130816 33.930
eugene 2980130816 33.810
eugene 2980130816 33.890
------------------------------
eugene2 2980130816 23.080
eugene2 2980130816 22.960
eugene2 2980130816 22.970
eugene2 2980130816 23.710
regards
andy
On December 05, 2003 at 00:22:11, Russell Reagan wrote:
>I found an old piece of code I had written to test the speed of a few
>bitscanning routines (ex. FirstOne() in Crafty). I was curious how different
>they would run on a 64-bit machine, so I sent them to Dr. Hyatt and he was kind
>enough to run them for me on the Opteron. Thanks Bob ;-)
>
>The source code of my program is below. The output of the program is in the
>form: <name of routine> <checksum> <seconds>. Lower times are better.
>
>Here are the results on my 32-bit 2GHz Athlon:
>
> magic bitscan 2980130816 11.987
> magic bitscan 2980130816 12.207
> magic bitscan 2980130816 12.338
> magic bitscan 2980130816 12.448
> ------------------------------
> table 16 2980130816 7.250
> table 16 2980130816 7.251
> table 16 2980130816 7.140
> table 16 2980130816 7.040
> ------------------------------
> gerd 2980130816 9.243
> gerd 2980130816 9.264
> gerd 2980130816 9.253
> gerd 2980130816 9.273
> ------------------------------
> eugene 2980130816 7.201
> eugene 2980130816 7.170
> eugene 2980130816 7.190
> eugene 2980130816 7.191
> ------------------------------
> eugene2 2980130816 7.230
> eugene2 2980130816 7.261
> eugene2 2980130816 7.250
> eugene2 2980130816 6.780
>
>Here are the results from the 1.8ghz Opteron:
>
> magic bitscan 2980130816 4.040
> magic bitscan 2980130816 4.350
> magic bitscan 2980130816 4.350
> magic bitscan 2980130816 4.350
> ------------------------------
> table 16 2980130816 4.600
> table 16 2980130816 4.820
> table 16 2980130816 4.240
> table 16 2980130816 4.340
> ------------------------------
> gerd 2980130816 5.790
> gerd 2980130816 5.780
> gerd 2980130816 5.440
> gerd 2980130816 5.440
> ------------------------------
> eugene 2980130816 3.990
> eugene 2980130816 3.960
> eugene 2980130816 3.770
> eugene 2980130816 3.470
> ------------------------------
> eugene2 2980130816 3.690
> eugene2 2980130816 3.690
> eugene2 2980130816 3.680
> eugene2 2980130816 3.690
>
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