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Title: Crypto++ 5.6 ? Post by: j16sdiz on December 15, 2010, 09:18:06 AM I saw you are using a modified cryptopp 5.6.0, which disable SSE2 on 32-bit x86.
On the official website, there is a newer version 5.6.1 which fix a few SHA-256 related bug. I guess you may be interested: - fixed several bugs in the SHA-256 x86/x64 assembly code: --- incorrect hash on non-SSE2 x86 machines on non-aligned input --- incorrect hash on x86 machines when input crosses 0x80000000 --- incorrect hash on x64 when compiled with GCC with optimizations enabled Title: Re: Crypto++ 5.6 ? Post by: BioMike on December 15, 2010, 09:25:25 AM For the gentoo ebuild I have been using the original thing for some time now (Gentoo policy is not to use bundled libs, as they are a security hazard). No problems encountered in more then a half year.
Title: Re: Crypto++ 5.6 ? Post by: jgarzik on December 16, 2010, 04:13:55 AM This patch updates part of Crypto++ in bitcoin to upstream: http://yyz.us/bitcoin/patch.bitcoin-asmfix1 Title: Re: Crypto++ 5.6 ? Post by: j16sdiz on December 16, 2010, 01:49:40 PM I have patched the "bitcoinr" to use system provided crypto, here is the result:
CPU: Premium III Mobile (yes, i know this is very very old) Compiled with gcc 4.4, -O3 -msse the cryptopp 5.6.0 in bitcoinr tree: 133khash/s the cryptopp 5.6.1 (provided in debian): 200khash/s Here is the patch to use system-provided cryptopp (if available, with fallback) https://github.com/j16sdiz/bitcoin-pool/commit/121a0a570bed15fc347cff091e740a02bd8e1a3f Title: Re: Crypto++ 5.6 ? Post by: BioMike on December 16, 2010, 02:09:57 PM I have patched the "bitcoinr" to use system provided crypto, here is the result: CPU: Premium III Mobile (yes, i know this is very very old) Compiled with gcc 4.4, -O3 -msse the cryptopp 5.6.0 in bitcoinr tree: 133khash/s the cryptopp 5.6.1 (provided in debian): 200khash/s Here is the patch to use system-provided cryptopp (if available, with fallback) https://github.com/j16sdiz/bitcoin-pool/commit/121a0a570bed15fc347cff091e740a02bd8e1a3f That's quite a difference. Title: Re: Crypto++ 5.6 ? Post by: jgarzik on December 16, 2010, 07:50:38 PM I have patched the "bitcoinr" to use system provided crypto, here is the result: CPU: Premium III Mobile (yes, i know this is very very old) Compiled with gcc 4.4, -O3 -msse the cryptopp 5.6.0 in bitcoinr tree: 133khash/s the cryptopp 5.6.1 (provided in debian): 200khash/s Out of curiosity, what speed do you get from various algorithms in the CPU miner (http://bitcointalk.org/index.php?topic=1925.0;all)? That also uses Crypto++ code. Title: Re: Crypto++ 5.6 ? Post by: j16sdiz on December 20, 2010, 12:17:07 AM the cryptopp 5.6.0 in bitcoinr tree: 133khash/s the cryptopp 5.6.1 (provided in debian): 200khash/s Sorry, I was mixing up some binaries. The improvement was not that great. -- in fact, that was statistically insignificant. |