Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Crafty 64-bit speedup

Author: Eugene Nalimov

Date: 10:54:59 03/26/04

Go up one level in this thread


On March 26, 2004 at 13:23:14, Slater Wold wrote:

>On March 26, 2004 at 13:08:59, Eugene Nalimov wrote:
>
>>On March 26, 2004 at 11:50:24, Slater Wold wrote:
>>
>>>On March 26, 2004 at 10:59:30, Eugene Nalimov wrote:
>>>
>>>>On March 26, 2004 at 01:04:54, Slater Wold wrote:
>>>>
>>>>>All week I have been hacking away at making the fastest 32-bit & 64-bit binary
>>>>>with the AMD64 compiler I have access to.  I have been told that they are the
>>>>>same compiler; just one has the AMD64 additions.  Here are my results.
>>>>>
>>>>>
>>>>>Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13.10.2179 for 80x86
>>>>>Copyright (C) Microsoft Corporation 1984-2002. All rights reserved.
>>>>>Microsoft (R) Incremental Linker Version 7.10.2179
>>>>>Copyright (C) Microsoft Corporation.  All rights reserved.
>>>>>
>>>>>Using /O2, /Ot, /Og:
>>>>>
>>>>>Total nodes: 89911558
>>>>>Raw nodes per second: 1550199
>>>>>Total elapsed time: 58
>>>>>SMP time-to-ply measurement: 11.034483
>>>>>
>>>>>Microsoft (R) C/C++ Optimizing Compiler Version 14.00.2207 for AMD64
>>>>>Copyright (C) Microsoft Corporation 1984-2002. All rights reserved.
>>>>>Microsoft (R) Incremental Linker Version 8.00.2207
>>>>>Copyright (C) Microsoft Corporation.  All rights reserved.
>>>>>
>>>>>Using /O2, /Ot, /Og:
>>>>>
>>>>>Total nodes: 89913841
>>>>>Raw nodes per second: 2140805
>>>>>Total elapsed time: 42
>>>>>SMP time-to-ply measurement: 15.238095
>>>>>
>>>>>
>>>>>
>>>>>The fastest binary I can find *anywhere*, has been Russell's.  He compiled it
>>>>>using all optimizations using .NET 2003 (he used VC_INLINE_ASM & ASM_INLINED,
>>>>>which my compiler cannot use).  Here is its result:
>>>>>
>>>>>Total nodes: 89908309
>>>>>Raw nodes per second: 1696383
>>>>>Total elapsed time: 53
>>>>>SMP time-to-ply measurement: 12.075472
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>More engines to come soon...
>>>>
>>>>Please add /GL to the command line.
>>>>
>>>>Thanks,
>>>>Eugene
>>>
>>>WPO slows down the 64-bit compile (from 214 to 209).  And speeds up the 32-bit
>>>compile (from 155 to 163).
>>
>>You probably have very old 64-bit compiler. During early development everybody
>>works on correctness, not on quality of generated code...
>>
>>Thanks,
>>Eugene
>
>Is 14.00.2207 for AMD64 old?  I thought it was circa 2/04.  Could be wrong
>though.

Yes, it is very old. It is stable, and compatible with (shipped) libraries that
we are distributing with 64-bit compilers, so it is included in early
distributions/betas, but current VC is better, or at least generates faster
code.

And no, I would never put anybody in the another beta program. It eats too much
my time...

Thanks,
Eugene

>I asked you to get me on the Whidbey beta!  :)



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.