[hashcash] Re: benchmark
- From: Atom 'Smasher' <atom@xxxxxxxxxxxxxx>
- To: hashcash@xxxxxxxxxxxxx
- Date: Tue, 14 Sep 2004 22:39:38 -0400 (EDT)
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the freeBSD (at least ~my~ freeBSD) weirdness continues...
so, i upgraded to gcc 3.4.2 (i thought i got rid of 2.x when i loaded this
box), and rebuilt hashcash with `make x86`. aside from several notices
about:
`-mcpu=' is deprecated. Use `-mtune=' or '-march=' instead.
the build seemed to go smooth.... until i tried using it. attached is my
benchmark test.
MD5 (benchmark) = 8874eb41d5b5db996d23972574049e68
FreeBSD 4.9-RELEASE
CPU: AMD Duron(tm) Processor (1194.92-MHz 686-class CPU)
Origin = "AuthenticAMD" Id = 0x671 Stepping = 1
Features=0x383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
AMD Features=0xc0480000<MP,AMIE,DSP,3DNow!>
when minting stamps, i get almost a 50% failure rate:
$ hashcash -Xm foo
ERROR: requested 20 bits, reported 20 bits, got 1 bits using AMD64/x86 MMX Standard
1x2-pipe minter: "1:20:040915:foo::ryzM4fvR3J/CGAf9:00002xgx"
0bit stamp - hangs
1bit stamp ~ 20% failure
2bit stamp ~ 35% failure
3bit stamp ~ 40% failure
4bit stamp ~ 47% failure
...
20bit stamp ~ 51% failure
any ideas?
i'm using generic in the meantime...
...atom
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"What the hell are you getting so upset about?" he
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Rate Name (* machine default)
ANSI Compact 1-pipe
1137824 ANSI Compact 1-pipe
Solution: 1:22:040404:foo::0123456789abcdef:0000000JaED
Iterations: 5129101
Time taken: 4.508
ANSI Standard 1-pipe
1345337 ANSI Standard 1-pipe
Solution: 1:22:040404:foo::0123456789abcdef:0000000JaED
Iterations: 5129101
Time taken: 3.812
ANSI Ultra-Compact 1-pipe
1176567 ANSI Ultra-Compact 1-pipe
Solution: 1:22:040404:foo::0123456789abcdef:0000000JaED
Iterations: 5129101
Time taken: 4.359
ANSI Compact 2-pipe
1326312 ANSI Compact 2-pipe
Solution: 1:22:040404:foo::0123456789abcdef:0000000JaED
Iterations: 5129101
Time taken: 3.867
ANSI Standard 2-pipe
1370615 ANSI Standard 2-pipe
Solution: 1:22:040404:foo::0123456789abcdef:0000000JaED
Iterations: 5129101
Time taken: 3.742
--- PowerPC Altivec Standard 1x4-pipe (Not available on this machine)
--- PowerPC Altivec Compact 2x4-pipe (Not available on this machine)
--- PowerPC Altivec Standard 2x4-pipe (Not available on this machine)
AMD64/x86 MMX Compact 1x2-pipe
ERROR!
Wanted 22 bits, reported 22 bits, got 1 bits.
End-of-block marker remains intact.
"1:22:040404:foo::0123456789abcdef:0000000ih8L"
Time taken: 6.586
AMD64/x86 MMX Standard 1x2-pipe
ERROR!
Wanted 22 bits, reported 22 bits, got 1 bits.
End-of-block marker remains intact.
"1:22:040404:foo::0123456789abcdef:0000000ih8L"
Time taken: 6.320
Best minter: ANSI Standard 2-pipe (1370615 hashes/sec)
Projected average times to mint:
8 bits: 0.000 seconds (186.8 microseconds)
10 bits: 0.001 seconds (747.1 microseconds)
16 bits: 0.048 seconds
20 bits: 0.765 seconds
22 bits: 3.060 seconds
24 bits: 12.241 seconds
26 bits: 48.963 seconds
28 bits: 195.850 seconds (3.3 minutes)
30 bits: 783.401 seconds (13.1 minutes)
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