Date: Sun, 11 Mar 2007 22:05:15 -0400 From: Erik Winkler <ewinkler@...ls.com> To: john-users@...ts.openwall.com Subject: Re: New NT patch On Mar 8, 2007, at 5:06 AM, Alain Espinosa wrote: > Revision #5 > > - Now passwords are trying in blocks of lenght 40-64. This speedup the > performance (not in the benchmark, in the "real" c/s),particularly in > the incremental mode with near a 30%. > > - Add SSE2 code with a speedup of 20% over C code. Note that "plain" > SSE2 code are a little bit bad that C code because the emulation of > the rotate instruction that dont exist in SSE2 (gcc are smart enough > to produce rotate instruction in the C code). The speedup is because i > intermix SSE2 code with x86 code trying 5 passwords in parallel. I am seeing the following benchmark under MacOSX and with 2.33 Ghz Core2 cpu. ./john -test -format:NT Benchmarking: NT MD4 [SSE2 5x]... DONE Raw: 13612K c/s real, 14764K c/s virtual The original patch produced the following benchmark: ./john -test -format:NT Benchmarking: NT MD4 [Rapid NT MD4]... DONE Raw: 6148K c/s real, 6405K c/s virtual Is the large benchmark speed increase real? -- To unsubscribe, e-mail john-users-unsubscribe@...ts.openwall.com and reply to the automated confirmation request that will be sent to you.
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