Cray Blitz 49h available (working!)

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Werewolf
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Re: Cray Blitz 49h available (working!)

Post by Werewolf »

Do you have nps for the actual Cray Supercomputer? I looked online and found 6000nps, is that really correct? That's about 386 territory.
Dann Corbit
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Re: Cray Blitz 49h available (working!)

Post by Dann Corbit »

I am sure that the Cray machines got faster over time.

From this link:
https://www.chessprogramming.org/WCCC_1986
The table "Participants" shows 100,000 NPS.
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Alexander Schmidt
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Re: Cray Blitz 49h available (working!)

Post by Alexander Schmidt »

Werewolf wrote: Wed Mar 20, 2024 9:25 am Do you have nps for the actual Cray Supercomputer? I looked online and found 6000nps, is that really correct? That's about 386 territory.
1983 Cray Blitz was searching 20-30K nodes/s

https://www.stmintz.com/ccc/index.php?id=55534

In an article of the german CSS-Magazine 4/94 about the 24. ACM torunament they write:

Normaly Cray Blitz runs on a machine with 16 processors and 13.000 MIPS. In the tourney they used 4 processors and searched 750K nodes/s in the midgame. I think the 750Kn/s refer to the 4 processor machine, but I am actually not really sure.
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Ajedrecista
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Re: Cray Blitz 49h available (working!).

Post by Ajedrecista »

Hello:

The figure of 100,000 nodes/second from CPW might had been extracted from the table of page 14 of this article:

http://www.chesscomputeruk.com/Scientif ... y_1986.pdf

There is a complete list of games of that WCCC at Fall/Winter 1986 edition of Computer Chess Reports, from page 33 onwards:

http://www.chesscomputeruk.com/Computer ... 1986FW.pdf

------------

There is other table at pages 30 and 31 of Computer Chess Digest Annual 1983:

http://www.chesscomputeruk.com/Computer ... 83_9Mb.pdf

With the following information about Cray Blitz at the 13th annual North American Computer Chess Championship (October 1982):

Code: Select all

Computing System:             CRAY-I
Language:                     FORTRAN IV
Program Size (Program, Data): 200 K 12 Mb
Book Size:                    30,000 pos.
Nodes/Sec.:                   8-20 K
------------

Other aticle, this time by Larry, says that Cray Blitz ran on a 8-processor $25,000,000 Cray YMP supercomputer at 1989 ACM Tournament (page 15):

http://www.chesscomputeruk.com/Computer ... s_1989.pdf

------------

Other valuable information may be found at that site with the following search in Google:

Code: Select all

site:http://www.chesscomputeruk.com "Cray Blitz"
As well as in other old magazines. Nostalgia is expected.

Regards from Spain.

Ajedrecista.
Damas Clásicas
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Re: Cray Blitz 49h available (working!)

Post by Damas Clásicas »

Jim Ablett wrote: Tue Mar 19, 2024 6:48 pm Image
by Robert Hyatt, Harry L. Nelson, and Albert Gower.

Cray Blitz v49h

I finally compiled a working version (after about 15 years) :)

Console input only. Enter moves as d2d4 etc.

There is no manual with the program.
I have included some literature on the program that I found on the web.

Cray Blitz 49h JA.

https://drive.proton.me/urls/PB3EZGK18R#oSYIxCv3ZIF7

Jim.
Great! Many thanks for that!

It's possible to convert it to UCI without too much work?
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Jim Ablett
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Re: Cray Blitz 49h available (working!)

Post by Jim Ablett »

Damas Clásicas wrote: Wed Mar 20, 2024 8:31 pm
Jim Ablett wrote: Tue Mar 19, 2024 6:48 pm Image
by Robert Hyatt, Harry L. Nelson, and Albert Gower.

Cray Blitz v49h

I finally compiled a working version (after about 15 years) :)

Console input only. Enter moves as d2d4 etc.

There is no manual with the program.
I have included some literature on the program that I found on the web.

Cray Blitz 49h JA.

https://drive.proton.me/urls/PB3EZGK18R#oSYIxCv3ZIF7

Jim.
Great! Many thanks for that!

It's possible to convert it to UCI without too much work?
The Fortran src files have been converted to C src files but I haven't been able to compile a working executable from it so far. Once I get over that stage then it should be straightforward to add winboard or uci interface to it.

I cant do it in Fortran, I don't know the language :cry:

Jim.
Werewolf
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Re: Cray Blitz 49h available (working!)

Post by Werewolf »

Sorry to ask the obvious, but what year was 49h released? Is it 1986 or between 1983 and 1986?
And what nps do we think it gets on modern hardware?

Seems like it's not threaded, but the original was.
Werewolf
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Re: Cray Blitz 49h available (working!)

Post by Werewolf »

Blimey. It announced a mate in 10 in 1 second! :shock:

No idea how to get the book working though.
Alexander Schmidt
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Re: Cray Blitz 49h available (working!)

Post by Alexander Schmidt »

Werewolf wrote: Wed Mar 20, 2024 10:33 pm Sorry to ask the obvious, but what year was 49h released? Is it 1986 or between 1983 and 1986?
And what nps do we think it gets on modern hardware?

Seems like it's not threaded, but the original was.
From main.f: last revision 12/09/90
Damas Clásicas
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Full name: Herson P. Guier

Re: Cray Blitz 49h available (working!)

Post by Damas Clásicas »

Werewolf wrote: Wed Mar 20, 2024 10:33 pm Sorry to ask the obvious, but what year was 49h released? Is it 1986 or between 1983 and 1986?
And what nps do we think it gets on modern hardware?

Seems like it's not threaded, but the original was.
The Nodes are pointed there:

https://ibb.co/d4xLXJ4