Is Gentoo faster? Or is it the 2.6 kernel?
13 Aug 2005 8:16:26 UTC
Topic 189692
(moderation:
I switched from the preinstalled SLES2 to Gentoo 2005.0 and the crunching time was reduced from ~32.000 seconds to 30.000. The difference is close to 10%, so it is remarkable.
Look here.
Q1: Is it gentoo?
Q2: Is it the switch from kernel 2.4 to 2.6?
Anybody with a similar experiance?
Is Gentoo faster? Or is it the 2.6 kernel?
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I think that SuSE runs a lot of stuff periodically in the background (mandb etc.). As the BOINC Apps run with low priority, they may be hold up enought by it. But 10% is quite a lot...
BM
BM
gentoo is optimized for Your
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gentoo is optimized for Your CPU (i686 at least) including the kernel, which in fact can make those 10%...
I think it's all together,
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I think it's all together, new kernel, newer libs, little Gentoo optimizations and less background tasks.
Cause u can't compile the Einstein application with the fastest flags for your system, Gentoo will not be more than 0-2% faster compared to an other up-to-date distribution like Ubuntu or Mandriva
As stated on this page:
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As stated on this page: http://einstein.phys.uwm.edu/app_test.php
Compilation optimization gave about 30% speed improvement on SSE-capable CPUs (Pentium III and above)
so why You so underestimate the optimization of code for specific cpu?
RE: As stated on this page:
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Too late to see what I ment.
With the old client one WU used ~46.000 seconds.
With the 0.06 (the improved) client on preinstalled SLES2 it took 32.000 seconds.
With the 0.06 (the improved) client on Gentoo it took 30.000 seconds.
I ment the difference between the last two lines. The binaries of BOINC *and* Einstein are the same for the last two lines, I did *not* emerge the boinc client.