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Subject: Re: Fritz 5 (fritzmark profile)

Author: Mark Young

Date: 11:23:38 05/29/98

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On May 29, 1998 at 09:10:26, Enrique Irazoqui wrote:

>On May 29, 1998 at 07:34:34, Mark Young wrote:
>
>>Here is some more data for people to chew on. Tests ran on a P II 300 64
>>meg sdram. You will notice a very uneven upward trend, as hash is added.
>>This happend no matter how many time I ran this profile. This may be
>>caused by Windows 95, and not fritz 5. When I ran this profile on win 98
>>beta with the same computer. I got more of a steady upward trend. Maybe
>>a chess programmer could explain this.
>>
>>Hash size    Fritzmark     Time
>>64kb         50          445.8s
>>1meg         99          226.3s
>>2meg         112         201.1s
>>3meg         119         190.5s
>>4meg         133         169.4s
>>5meg         139         162.1s
>>6meg         145         156.6s
>>7meg         152         148.8s
>>8meg         151         149.2s
>>9meg         160         141.2s
>>10meg        161         140.6s
>>11meg        163         138.0s
>>12meg        167         135.7s
>>13meg        172         131.8s
>>14meg        179         126.6s
>>15meg        165         137.5s
>>16meg        189         119.1s
>>17meg        179         126.7s
>>18meg        170         133.6s
>>19meg        193         117.7s
>>20meg        185         122.7s
>>21meg        191         118.3s
>>22meg        205         110.1s
>>23meg        202         111.4s
>>24meg        176         128.0s
>>25meg        206         110.5s
>>26meg        202         112.7s
>>27meg        206         110.5s
>>28meg        207         109.1s
>>29meg        196         115.2s
>>30meg        184         122.2s
>>31meg        210         107.2s
>>32meg        187         120.4s
>>33meg        198         114.9s
>>34meg        201         112.9s
>>35meg        199         113.4s
>>36meg        200         113.0s
>>37meg        207         109.8s
>>38meg        198         114.1s
>>39meg        223         101.9s
>>40meg        209         108.7s
>>41meg        226         100.0s
>>42meg        205         110.0s
>>43meg        197         115.7s
>>44meg        202         111.4s
>>45meg        206         109.4s
>>46meg        223         101.9s
>>47meg        206         110.6s
>>48meg        232         97.7s
>>49meg        199         113.3s
>>50meg        207         109.9s
>>51meg        205         110.8s
>>52meg        210         108.6s
>>53meg        228         99.9s
>>54meg        204         110.4s
>
>I don't think the long Fritzmark gives an accurate idea on faster
>machines if what you want to measure is performance at 40 in 2. That's
>why on your table there is no difference between 22MB and 54MB. You need
>a position that takes about 2 to 3 times as long to solve.
>
>By the way, how did you manage to get 54 MB on a 64MB machine? My
>maximum is 50, and with lots of swapping. :(
>
>Enrique
-----------------------------------------
Thats not what I was trying to do. Just show the increase in speed as
you add hash. People can make what they want out of the data.

There is a increses in speed at certain hash settings. I found that on
the fritzmark it liked certain hash settings better. Likes 53 meg, 48
meg, 41 meg, 39 meg ect. This is not random. It will repeat no matter
how many time I run the test. Now in windows 98 this stopped. and say
after 39 meg. each values as you added hash will gave you a better time.
And all times were in the 220 to 230+
fritzmark range with a smooth upward tread as you add more hash. So this
is not true.

I don't know why I could go higher on my hash settings. I do know with
windows 98 beta I could go even higher. Up to 56 meg.

I wanted to show that fritz could still think fast with a small amount
of hash. It did not stop or do little as the manule says. Look at what
2megs gives you. And that amount of hash is filled in secs. So I do
think it is worth doing over night analysis with fritz 5. Even though It
will fill up its hash tables of 50 to 100 meg in 2 to 4 min.



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