Measured floating point speed & OS
28 Apr 2011 19:33:15 UTC
Topic 195769
(moderation:
Hi all !
I'm wondering why on a Windows platform (Win 7) i got 2.7K MFPS and 1.8K on a GNU/Linux platform (Fedora 14 - Linux 2.6.35.x)
CPU-frequency scaling disabeled on the linux, CPU run @ 2.93 Ghz
Any idea? :)
GNU/Linux <3
Measured floating point speed & OS
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Because the boinc bogobenchmarks have at best an accidental relationship with reality.
RE: Hi all ! I'm wondering
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Because when Windows is up and running it is doing 50 gazillion things in the background and as DanNeely said this all effects the numbers. Over time they will stabilize but comparing a Windows machine to a Linux machine the numbers will never be the same. That is part of why a Linux machine runs faster on the same hardware than a Windows machine.
RE: Because when Windows is
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if you compare application performance with the same code built with the same compiler, you'll often see it's less than 1% difference.
PG-LLR's for instance.
the benchmark differences have at least one reason: MS-VC vs. GCC.
and afaik the newer boinc-clients for linux 64 have been compiled with SSE and verctorisation enabled.
and there are some other silly aspects in there..