How does a slow CPU go almost as fast as a fast CPU?

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Message boards : Number crunching : How does a slow CPU go almost as fast as a fast CPU?

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Tex1954
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Message 191 - Posted: 20 Apr 2014, 5:59:12 UTC
Last modified: 20 Apr 2014, 5:59:48 UTC

Same WU, one system runs Linux Mint 16 and the other runs (I think an Apple OS) Darwin 13.1.0.

This is the WU's done:

http://bearnol.is-a-geek.com/wanless2/workunit.php?wuid=5599952

System #1 specs: (1878 seconds to complete)
http://bearnol.is-a-geek.com/wanless2/show_host_detail.php?hostid=25047

System #2 specs: (1982 seconds to complete)
http://bearnol.is-a-geek.com/wanless2/show_host_detail.php?hostid=15487


Notice system #1 is almost twice as fast on floats and about 5 times faster on integers.

It's hard for me to believe the slower system is only about 100 seconds slower... and it's really hard to believe the OS has that much to do with things.

IS the 64b Darwin app compilation V-1.12 so much better than the 64b Linux V-1.13 compilation? Hard to believe...

8-)

Tex1954
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Message 197 - Posted: 21 Apr 2014, 13:44:22 UTC

Update:

Well, a friend of mine told me the benchmarks for Darwin, Windoz, Linux are all different and not to rely on them.

Sooo, I would presume the system in question is highly overclocked and not showing that... or there is a bug or something somewhere.

8-)


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Message boards : Number crunching : How does a slow CPU go almost as fast as a fast CPU?


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