[hashcash] Re: libfastmint update 20040915
- From: Atom 'Smasher' <atom@xxxxxxxxxxxxxx>
- To: hashcash@xxxxxxxxxxxxx
- Date: Thu, 16 Sep 2004 02:14:02 -0400 (EDT)
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the patch seems to work well. i built and installed 1.08 with x86 and have
a 0% failure rate when minting stamps (attempting to mint a zero bit stamp
still hangs).
MD5 (benchmark.brok_x86) = dbb4ef9063ba592d9e7f3b29441c1382
MD5 (benchmark.generic) = d85680646808e626c3cd49551a24a004
MD5 (benchmark.patched) = 3eb93c5bfc2f063e0e9bdac256b898a8
weirdness: using an unpatched 1.08 (generic build) my best minter is:
ANSI Standard 2-pipe
1495500 ANSI Standard 2-pipe
Solution: 1:22:040404:foo::0123456789abcdef:0000000JaED
Iterations: 5129101
Time taken: 3.430
using the patched version (x86 build) my best minter is:
2299204 AMD64/x86 MMX Standard 1x2-pipe *
Solution: 1:22:040404:foo@xxxxxxx::0123456789abcdef:000000Tu1n
Iterations: 7831665
Time taken: 3.406
which, according to this benchmark, does a *SLIGHTLY* faster job of going
through more iterations(???), but the same build actually slowed down all
of the ANSI minters (perhaps because there are more iterations?).
why does the patch seem to require more iterations in all minters to
obtain the same results? is that just because the resource was changed
from "foo" to "foo@xxxxxxx" and the ~random~ starting point was changed
(seems like line 1141 of the patch), requiring 50% more iterations to
create the test stamp? it makes it difficult to make a good comparison
between the patched and unpatched versions. in any case, it projects that
my average time to mint a stamp is about 1/3 faster. that's cool.
thanks...!
...atom
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Rate Name (* machine default)
ANSI Compact 1-pipe
1334824 ANSI Compact 1-pipe
Solution: 1:22:040404:foo@xxxxxxx::0123456789abcdef:000000Tu1n
Iterations: 7831665
Time taken: 5.867
ANSI Standard 1-pipe
1630005 ANSI Standard 1-pipe
Solution: 1:22:040404:foo@xxxxxxx::0123456789abcdef:000000Tu1n
Iterations: 7831665
Time taken: 4.805
ANSI Ultra-Compact 1-pipe
1243738 ANSI Ultra-Compact 1-pipe
Solution: 1:22:040404:foo@xxxxxxx::0123456789abcdef:000000Tu1n
Iterations: 7831665
Time taken: 6.297
ANSI Compact 2-pipe
1561453 ANSI Compact 2-pipe
Solution: 1:22:040404:foo@xxxxxxx::0123456789abcdef:000000Tu1n
Iterations: 7831665
Time taken: 5.016
ANSI Standard 2-pipe
1637995 ANSI Standard 2-pipe
Solution: 1:22:040404:foo@xxxxxxx::0123456789abcdef:000000Tu1n
Iterations: 7831665
Time taken: 4.781
--- 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
2084102 AMD64/x86 MMX Compact 1x2-pipe
Solution: 1:22:040404:foo@xxxxxxx::0123456789abcdef:000000Tu1n
Iterations: 7831665
Time taken: 3.758
AMD64/x86 MMX Standard 1x2-pipe
2299204 AMD64/x86 MMX Standard 1x2-pipe *
Solution: 1:22:040404:foo@xxxxxxx::0123456789abcdef:000000Tu1n
Iterations: 7831665
Time taken: 3.406
Best minter: AMD64/x86 MMX Standard 1x2-pipe (2299204 hashes/sec)
Projected average times to mint:
8 bits: 0.000 seconds (111.3 microseconds)
10 bits: 0.000 seconds (445.4 microseconds)
16 bits: 0.029 seconds
20 bits: 0.456 seconds
22 bits: 1.824 seconds
24 bits: 7.297 seconds
26 bits: 29.188 seconds
28 bits: 116.751 seconds (1.9 minutes)
30 bits: 467.006 seconds (7.8 minutes)
Rate Name (* machine default)
ANSI Compact 1-pipe
1139800 ANSI Compact 1-pipe
Solution: 1:22:040404:foo::0123456789abcdef:0000000JaED
Iterations: 5129101
Time taken: 4.500
ANSI Standard 1-pipe
1353659 ANSI Standard 1-pipe
Solution: 1:22:040404:foo::0123456789abcdef:0000000JaED
Iterations: 5129101
Time taken: 3.789
ANSI Ultra-Compact 1-pipe
1178680 ANSI Ultra-Compact 1-pipe
Solution: 1:22:040404:foo::0123456789abcdef:0000000JaED
Iterations: 5129101
Time taken: 4.352
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: 6.570
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)
Rate Name (* machine default)
ANSI Compact 1-pipe
1274805 ANSI Compact 1-pipe *
Solution: 1:22:040404:foo::0123456789abcdef:0000000JaED
Iterations: 5129101
Time taken: 4.023
ANSI Standard 1-pipe
1485350 ANSI Standard 1-pipe
Solution: 1:22:040404:foo::0123456789abcdef:0000000JaED
Iterations: 5129101
Time taken: 3.453
ANSI Ultra-Compact 1-pipe
1284784 ANSI Ultra-Compact 1-pipe
Solution: 1:22:040404:foo::0123456789abcdef:0000000JaED
Iterations: 5129101
Time taken: 3.992
ANSI Compact 2-pipe
1436597 ANSI Compact 2-pipe
Solution: 1:22:040404:foo::0123456789abcdef:0000000JaED
Iterations: 5129101
Time taken: 3.570
ANSI Standard 2-pipe
1495500 ANSI Standard 2-pipe
Solution: 1:22:040404:foo::0123456789abcdef:0000000JaED
Iterations: 5129101
Time taken: 3.430
--- 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 (Not available on this machine)
--- AMD64/x86 MMX Standard 1x2-pipe (Not available on this machine)
Best minter: ANSI Standard 2-pipe (1495500 hashes/sec)
Projected average times to mint:
8 bits: 0.000 seconds (171.2 microseconds)
10 bits: 0.001 seconds (684.7 microseconds)
16 bits: 0.044 seconds
20 bits: 0.701 seconds
22 bits: 2.805 seconds
24 bits: 11.218 seconds
26 bits: 44.874 seconds
28 bits: 179.495 seconds (3.0 minutes)
30 bits: 717.981 seconds (12.0 minutes)
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