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Old 2012-01-15, 19:12   #280
lorgix
 
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Sep 2010
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Quote:
Originally Posted by ATH View Post
I noticed that different binaries choose slightly different default B2 values, so for testing stage2 "fairly" I fixed the B2 value to a value near the default B2.



I tested my old 6.3 and 6.3.1 binaries versus the new 6.4 and the new version is 2-6% slower above 200 digits in stage1 but about the same speed for stage2, though I'm only testing for the lower B1/B2 values.

core2-64bittests.html
corei7-64bittests.html

I briefly tested 6.3.1 compiled with MPIR 2.5.0 and 6.4 compiled with MPIR 2.4.0 and 6.3.1 matches the old 6.3.1 faster times while 6.4 matches the other 6.4 times, so it's gmp-ecm that is a bit slower not mpir.
So there's no reason to use ecm64-1681mpir250core2-64-asmredc?

Btw; Does anyone know why this happens?
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