[RC5] Client 2.8010 faster than later ones, x86 core #6 change ?

Ryu odjmico2 at wanadoo.fr
Sat Jun 8 03:30:06 EDT 2002


i personally use a dnetc v2.8011-464-GTR-00102500 for Win32 client under all
my windows systems, except for P4 processors for which the latest pre
released client is the better. I found 8011 to be faster than 8015 and
newers
here on a Duron 700 at 950 under Win NT5.0.2195 it does [3,391,062.31 keys/sec]
i also remember old client V2.7016 that was the best ! but it can't manage
blocks greater than 2^31 :(

-----Message d'origine-----
De : owner-rc5 at lists.distributed.net
[mailto:owner-rc5 at lists.distributed.net]De la part de Frédéric Kayser
Envoyé : vendredi 7 juin 2002 23:06
À : rc5 at lists.distributed.net
Objet : [RC5] Client 2.8010 faster than later ones, x86 core #6 change ?


I've found that on my system (AMD Duron 963, FreeBSD 4.2), client version
2.8010 outperforms newer clients (8015 and 8018).
2.8010 has perhaps a slightly different #6 core called "RG/HB ath" whereas
it's called "RG/HB re-pair II" later.
Benchmarks show that "RG/HB re-pair II" is a very little faster than "RG/HB
ath".
In realworld terms it's somewhat different, after a few hours average speed
is 3,394,400 k/s (2.8010) compared to 3,387,100 and 3,386,600.
I've used the same .ini file, and it's repeatable.

Perhaps the new clients have introduced an overhead that globally slows the
cruncher, or the new core #6 is not really faster.


Have you noticed slowdowns between 2.8010 and later clients ?



Benchmarked speeds in keys/sec (best out of 3 runs):
                    #6          #3          #2          #4          #1
2.8010-463   3,432,997   2,980,191   2,963,697   2,821,431   2,735,029
2.8015-469   3,434,040   2,977,933   2,961,175   2,822,590   2,733,956
2.8018-472   3,433,885   2,979,382   2,978,925   2,839,458   2,740,711

Realworld speeds in keys/sec (average after a few hours):
                    #6
2.8010-463   3,394,400
2.8015-469   3,386,600
2.8018-472   3,387,100

Cores:
#0 (RG/BRF class 5)
#1 (RG class 3/4)
#2 (RG class 6)
#3 (RG re-pair I) or (RG Cx re-pair)
#4 (RG RISC-rotate I)
#5 (RG RISC-rotate II)
#6 (RG/HB re-pair II) or (RG/HB ath)
#7 (RG/BRF self-mod)
#8 (AK class 7) or (NB class 7)
#9 (jasonp P5/MMX) is #0 on v2.8010

--
Frédéric Kayser

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