Core 2 Duo E6600 Benchmark please
 

I'm working on the formulas for CPU credit on the server. In the past I've used a Pentium-90 and a PII-400 to devise these formulas. It's time to update that! I'd like to use a mid-range Core 2 Duo as the baseline machine. Unfortunately, I don't own one.

So, if you have a non-overclocked Core 2 Duo E6600 running version 24.13 or 24.14, I'd be grateful for a benchmark. Exit prime95. Add the line FullBench=1 to prime.ini, run prime95, and do Options/Benchmark. Post the results here or email them to me. Thanks!!

Core 2 Duo E6400 Benchmark (not E6400)
 

Here is a benchmark of Core 2 Duo E6400. You were looking for a benchmark of the E6600, but maybe this can help ::smile:

Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz
CPU speed: 2133.85 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 32 KB
L2 cache size: 2048 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 4K FFT length: 0.061 ms.
Best time for 5K FFT length: 0.090 ms.
Best time for 6K FFT length: 0.107 ms.
Best time for 7K FFT length: 0.130 ms.
Best time for 8K FFT length: 0.134 ms.
Best time for 10K FFT length: 0.188 ms.
Best time for 12K FFT length: 0.229 ms.
Best time for 14K FFT length: 0.277 ms.
Best time for 16K FFT length: 0.289 ms.
Best time for 20K FFT length: 0.392 ms.
Best time for 24K FFT length: 0.477 ms.
Best time for 28K FFT length: 0.591 ms.
Best time for 32K FFT length: 0.615 ms.
Best time for 40K FFT length: 0.810 ms.
Best time for 48K FFT length: 0.985 ms.
Best time for 56K FFT length: 1.202 ms.
Best time for 64K FFT length: 1.286 ms.
Best time for 80K FFT length: 1.810 ms.
Best time for 96K FFT length: 2.201 ms.
Best time for 112K FFT length: 2.668 ms.
Best time for 128K FFT length: 2.819 ms.
Best time for 160K FFT length: 3.460 ms.
Best time for 192K FFT length: 4.285 ms.
Best time for 224K FFT length: 5.159 ms.
Best time for 256K FFT length: 5.813 ms.
Best time for 320K FFT length: 7.607 ms.
Best time for 384K FFT length: 9.339 ms.
Best time for 448K FFT length: 11.135 ms.
Best time for 512K FFT length: 12.346 ms.
Best time for 640K FFT length: 16.439 ms.
Best time for 768K FFT length: 20.186 ms.
Best time for 896K FFT length: 23.999 ms.
Best time for 1024K FFT length: 27.960 ms.
Best time for 1280K FFT length: 34.175 ms.
Best time for 1536K FFT length: 41.544 ms.
Best time for 1792K FFT length: 49.512 ms.
Best time for 2048K FFT length: 55.166 ms.
Best time for 2560K FFT length: 73.039 ms.
Best time for 3072K FFT length: 88.454 ms.
Best time for 3584K FFT length: 105.872 ms.
Best time for 4096K FFT length: 118.445 ms.
Best time for 5120K FFT length: 152.534 ms.
Best time for 6144K FFT length: 184.302 ms.
Best time for 7168K FFT length: 225.052 ms.
Best time for 8192K FFT length: 247.732 ms.
Best time for 10240K FFT length: 327.885 ms.
Best time for 12288K FFT length: 396.792 ms.
Best time for 14336K FFT length: 484.609 ms.
Best time for 16384K FFT length: 531.349 ms.
Best time for 20480K FFT length: 730.398 ms.
Best time for 24576K FFT length: 908.883 ms.
Best time for 28672K FFT length: 1084.860 ms.
Best time for 32768K FFT length: 1199.139 ms.
Best time for 58 bit trial factors: 5.245 ms.
Best time for 59 bit trial factors: 5.315 ms.
Best time for 60 bit trial factors: 5.309 ms.
Best time for 61 bit trial factors: 5.254 ms.
Best time for 62 bit trial factors: 8.375 ms.
Best time for 63 bit trial factors: 8.431 ms.
Best time for 64 bit trial factors: 8.066 ms.
Best time for 65 bit trial factors: 7.987 ms.
Best time for 66 bit trial factors: 8.026 ms.
Best time for 67 bit trial factors: 7.930 ms.

We like P90 years.

:down:

[QUOTE=Xyzzy;100416]We like P90 years.[/QUOTE]

I just knew this request would start this discussion!

Examining v24.14 640K to 2048K FFT benchmarks from a P100, PII-400, P4-2000 and a C2D-2400 we get the following architectural multipliers (after factoring out the MHz difference):

One core of a C2D = 1.68 P4.
A P4 = 3.44 PIIs
A PII = 1.12 Pentium

Using this we can convert from one Intel-based measure to another. Even if the server internally maintains C2D CPU seconds, we can display reports in any measure we want.

Since almost no one here is doing LL tests using a P-90 now, I'm sure we can agree that granting CPU credit based on a P4 or C2D would be fairer. If I continued to use the timings from my PII-400, its small L2 cache would at some point inflate the CPU credit given to larger FFT sizes.

I have already done that some time ago. [URL="http://www.mersenneforum.org/showpost.php?p=86281&postcount=248"]http://www.mersenneforum.org/showpost.php?p=86281&postcount=248[/URL]

[quote=Prime95;100418]Since almost no one here is doing LL tests using a P-90 now, I'm sure we can agree that granting CPU credit based on a P4 or C2D would be fairer. If I continued to use the timings from my PII-400, its small L2 cache would at some point inflate the CPU credit given to larger FFT sizes.[/quote]

And using updated FFT ranges on the status page would
also be more representative

[QUOTE=Prime95;100406]I'm working on the formulas for CPU credit on the server. [/QUOTE]

So someone IS still working on Primenet V5.0 :whistle:

Luigi

Thanks Cruelty -- just what I was looking for.

Glad I could help :wink:

Basing a new norm on the best times of a benchmark seems not fair to me. I benchmarked one machine quite extensively and came to the conclusion that results have a big standard deviation. I could quote someone on this : [QUOTE=Prime95;95917]The benchmark is a poor tool to use. Since it reports the BEST iteration time.

You really need to run 4 LL tests which will report the more important average iteration time.[/QUOTE];-)
Jacob

[QUOTE=S485122;100479]I benchmarked one machine quite extensively and came to the conclusion that results have a big standard deviation. [/QUOTE]

Here are the timings of my machine:

[FONT="Courier New"]
Compare your results to other computers at [url]http://www.mersenne.org/bench.htm[/url]
Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz
CPU speed: 2400.31 MHz, 2 cores
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 32 KB
L2 cache size: 4096 KB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
Prime95 32-bit version 25.1, RdtscTiming=1


Compare your results to other computers at [url]http://www.mersenne.org/bench.htm[/url]
That web page also contains instructions on how your results can be included.

Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz
CPU speed: 2399.92 MHz
CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2
L1 cache size: 32 KB
L2 cache size: unknown
L1 cache line size: 64 bytes
L2 cache line size: unknown
Prime95 32-bit version 24.14, RdtscTiming=1
Best time for 4K FFT length: 0.054 ms.
Best time for 5K FFT length: 0.080 ms.
Best time for 6K FFT length: 0.095 ms.
Best time for 7K FFT length: 0.115 ms.
Best time for 8K FFT length: 0.119 ms.
Best time for 10K FFT length: 0.168 ms.
Best time for 12K FFT length: 0.202 ms.
Best time for 14K FFT length: 0.246 ms.
Best time for 16K FFT length: 0.257 ms.
Best time for 20K FFT length: 0.349 ms.
Best time for 24K FFT length: 0.424 ms.
Best time for 28K FFT length: 0.525 ms.
Best time for 32K FFT length: 0.547 ms.
Best time for 40K FFT length: 0.720 ms.
Best time for 48K FFT length: 0.872 ms.
Best time for 56K FFT length: 1.068 ms.
Best time for 64K FFT length: 1.140 ms.
Best time for 80K FFT length: 1.608 ms.
Best time for 96K FFT length: 1.955 ms.
Best time for 112K FFT length: 2.369 ms.
Best time for 128K FFT length: 2.500 ms.
Best time for 160K FFT length: 3.063 ms.
Best time for 192K FFT length: 3.783 ms.
Best time for 224K FFT length: 4.498 ms.
Best time for 256K FFT length: 4.991 ms.
Best time for 320K FFT length: 6.381 ms.
Best time for 384K FFT length: 7.851 ms.
Best time for 448K FFT length: 9.439 ms.
Best time for 512K FFT length: 10.548 ms.
Best time for 640K FFT length: 14.238 ms.
Best time for 768K FFT length: 17.527 ms.
Best time for 896K FFT length: 20.949 ms.
Best time for 1024K FFT length: 23.175 ms.
Best time for 1280K FFT length: 29.503 ms.
Best time for 1536K FFT length: 35.997 ms.
Best time for 1792K FFT length: 42.803 ms.
Best time for 2048K FFT length: 47.554 ms.
Best time for 2560K FFT length: 62.782 ms.
Best time for 3072K FFT length: 76.475 ms.
Best time for 3584K FFT length: 92.202 ms.
Best time for 4096K FFT length: 103.410 ms.
Best time for 5120K FFT length: 140.487 ms.
Best time for 6144K FFT length: 170.367 ms.
Best time for 7168K FFT length: 206.901 ms.
Best time for 8192K FFT length: 226.137 ms.
Best time for 10240K FFT length: 302.304 ms.
Best time for 12288K FFT length: 365.883 ms.
Best time for 14336K FFT length: 442.444 ms.
Best time for 16384K FFT length: 485.851 ms.
Best time for 20480K FFT length: 657.477 ms.
Best time for 24576K FFT length: 793.154 ms.
Best time for 28672K FFT length: 945.729 ms.
Best time for 32768K FFT length: 1032.329 ms.
Best time for 58 bit trial factors: 4.724 ms.
Best time for 59 bit trial factors: 4.660 ms.
Best time for 60 bit trial factors: 4.621 ms.
Best time for 61 bit trial factors: 4.659 ms.
Best time for 62 bit trial factors: 7.436 ms.
Best time for 63 bit trial factors: 7.434 ms.
Best time for 64 bit trial factors: 7.121 ms.
Best time for 65 bit trial factors: 7.081 ms.
Best time for 66 bit trial factors: 7.082 ms.
Best time for 67 bit trial factors: 7.045 ms.
[/FONT]