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Subject: Re: question about buying new hardware

Author: Uri Blass

Date: 01:05:49 05/11/04

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On May 11, 2004 at 03:32:25, Slater Wold wrote:

>On May 11, 2004 at 02:06:46, Uri Blass wrote:
>
>>I plan to buy new hardware for WCCC and my question is which hardware is best
>>for movei.
>>
>>If people can run movei in the opening position and tell me nodes per second
>>then it may be productive for me in deciding about buying new hardware.
>>
>>I want to know nodes per second that I can get in the opening position
>>
>>I am interested in the result that I can get in different hardwares.
>>
>>I do not plan to implement parallel search but having 2 processors have the
>>advantage that I can test with pondering and get results that I can trust so I
>>did not decide if to buy a machine with one processor or 2 processors and if the
>>difference in speed between one processor and 2 processor is small enough then I
>>may decide to go for 2 processors.
>>
>>Uri
>
>AMD FX53 (2.4Ghz):
>
>Movei00_8_178  WB2 17 MB:
> 1   00:00  0.35   b1c3
> 2   00:00  0.09   b1c3 b8c6
> 2   00:00  0.10   d2d4
> 2   00:00  0.16   d2d4 b8c6
> 2   00:00  0.17   e2e4
> 2   00:00  0.21   e2e4 b8c6
> 3   00:00  0.40   e2e4 e7e5 f1c4
> 4   00:00  0.06   e2e4 e7e5 d1h5 b8c6
> 5   00:00  0.34   e2e4 d7d5 b1c3 g8f6 e4d5 f6d5 f1b5 c7c6 c3d5 d8d5
> 6   00:00  0.10   e2e4 e7e5 b1c3 f8c5 d1g4 g7g5
> 7   00:00  0.12   e2e4 d7d5 e4e5 b8c6 d2d4 c8f5 b1c3
> 7   00:00  0.13   d2d4
> 7   00:00  0.30   d2d4 e7e6 c1f4 b8c6 g1f3 f8b4 c2c3 b4e7
> 8   00:01  0.09   d2d4 g8f6 b1c3 d7d5 e2e3 c8g4 f1e2 g4f5
> 9   00:01  0.11   d2d4 g8f6 e2e3 e7e6 g1f3 b8c6 f1b5 f8b4 c1d2 b4d6
> 9   00:01  0.12   g1f3
> 9   00:01  0.11   d2d4 g8f6 e2e3 e7e6 g1f3 b8c6 f1b5 f8b4 c1d2 b4d6
>10   00:02  0.10   d2d4 g8f6 b1c3 e7e6 g1f3 f8b4 c1g5 h7h6 g5f4 b8c6
>10   00:03  0.11   b1c3
>10   00:04  0.18   b1c3 b8c6 d2d4 e7e6 g1f3 f8b4 e2e4 d7d5 c1g5 g8e7
>11   00:06  0.15   b1c3 d7d5 d2d4 g8f6 g1f3 e7e6 c1f4 f8b4 e2e3 b4c3 b2c3 b8c6
>11   00:07  0.16   d2d4
>11   00:12  0.19   d2d4 g8f6 g1f3 e7e6 e2e3 b8c6 f1b5 a7a6 b5c6 d7c6 b1c3
>12   00:24  0.11   d2d4 g8f6 g1f3 e7e6 e2e3 d7d5 b1c3 f8b4 f3e5 e8g8 a2a3 b4a5
>
>676,440 N/sec
>
>I would venture to say optimized and profiled with Whidbey, it'd be over 700k.
>
>Send me the source, and I'll tell you what it runs with Whidbey 32-bit & 64-bit.
> ;)

Thanks for the information.
It is more than 3 times faster than the best hardware that I have today and it
is also more than 50% faster than the hardware that was used in the last CCT
tournament.

I am sure that it is possible to get speed improvement from better compiler.
I know what I did not do and I did not do profile based optimization(I have only
microsoft visual C++6 and I do not have newer compiler and it is impossible to
do profile based optimization or I do not know how to do it with the compiler
that I have).

I will consider if to send the source.
I will not make it public in the near future in any case but I may decide to
send it to somebody to get some speed improvement before the tournament.

I plan to release a new version in the next week.

no promise for big improvement but I plan to give the user options to change
personalities by changing weights in the program and I also hope to implement a
book that knows about tranposition but no promise about it.

Another reason to release a new version is that I corrected a bug that can cause
movei to lose games on time in rare cases.

Uri



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