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layout	title	grand_parent	parent	nav_order	date	original
forum	Re: 0.3 almost ready	Forum Posts	Bitcoin Forum	142	2010-06-25 14:10:06 UTC	https://bitcointalk.org/index.php?topic=199.msg1769#msg1769

Re: 0.3 almost ready

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Re: 0.3 almost ready
June 25, 2010, 02:10:06 PM

Thanks virtualcoin, that's a perfect comparison.

The 8% speedup from 32-bit Windows (2310k) to 32-bit Linux (2500k) is probably from the newer version of GCC on Linux (4.4.3 vs 3.4.5).

The 15% speedup from 32-bit to 64-bit Linux is more of a mystery.  The code is completely 32-bit.

Hmm, I think the 8 extra registers added by x86-64 must be what's helping.  That would make a significant difference to SHA if it could hold most of the 16 state variables in registers.