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Subject: Re: How are dual cores going to affect chess?

Author: gerold daniels

Date: 08:00:24 01/29/05

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On January 29, 2005 at 10:33:04, Vincent Diepeveen wrote:

>On January 29, 2005 at 09:48:07, gerold daniels wrote:
>
>>On January 29, 2005 at 09:09:30, Vincent Diepeveen wrote:
>>
>>>On January 29, 2005 at 08:31:27, Jason Kent wrote:
>>>
>>>>On January 29, 2005 at 08:28:11, Vincent Diepeveen wrote:
>>>>
>>>>>On January 29, 2005 at 08:20:07, Jason Kent wrote:
>>>>>
>>>>>Your machine will look like a dual machine. The OS doesn't know better than that
>>>>>it is 2 processor machine.
>>>>>
>>>>>>It looks like by the third quarter of this year, both intel and amd will be
>>>>>>selling dual cores.  Are they basically handled as two processors under task
>>>>>>manager, and software?  I'm guessing this is going mean that to get the most out
>>>>>>of your cpu, you will have to buy all the Deep versions.  Maybe that is why SMK
>>>>>>decided to seperate the programs?
>>>>>>Jason
>>>>>
>>>>>I won't comment on SMK, nor on chessbase, but it's obvious that if the intel CEO
>>>>>says that intel will produce ONLY dual core cpu's within a year and nearly
>>>>>nothing else, that only parallel software will work for you.
>>>>>
>>>>>Paying extra for something that just uses a normal single cpu, is a very bad
>>>>>thing. It means basically you have normally spoken a crippled software program,
>>>>>as > 90% of all cpu's will be dual core.
>>>>>
>>>>>Vincent
>>>>
>>>>It sounds like there will be plenty of programming needed to fix all of the
>>>>current software to make it SMP compatible.  Since I will be coming out of
>>>>school in another year or so, hopefully it will be easy to find work. :D
>>>
>>>Majority of applications that can eat any amount of cpu cycles are already
>>>parallel.
>>>
>>>Please note that search is one of the hardest to parallellize problems, because
>>>nowadays important is that your parallel search maintains the same branching
>>>factor like a single cpu search does. For example in databases parallel search
>>>is pretty trivial to make.
>>
>>good morning are the dual core better than the single processor and what about
>>the new cell chip.
>
>For chess the dual cores will be 1.8 - 2.0 better in scaling. For diep simply
>2.0 scaling nearly.
>
>The cell processor, not much is known about it.
>
>See what i wrote in aceshardware about that.
>
>The only info i could find of someone speculating what it would be is that there
>will be different versions. One cheapo version which is put in cheapo game
>consoles and won't be able to impress much.
>
>The highend version i saw someone predict 4.6ghz for it in 0.065 which i frankly
>doubt they will achieve that so easily with it.
>
>Basically if i understand well it is a special processor which has 1 main core
>with 8 vector helpers.
>
>Depending upon how much those are vectorized and how many integer instruction
>units those helpers will have, it will be a fast or slow processor for chess.
>
>Then secondly real important, perhaps most important, will be the communication
>speed between the helper cores.
>
>On paper it should get 250 gflop, that's however at 4.6Ghz which is a speed i
>seriously doubt they will get for vector processors.
>
>Let's just sit and wait for it.
>
>Knowing IBM it won't be a serious processor for us chessprogrammers to consider,
>just like power5 is not serious for us either.
>
>>gerold.

thanks for the reply vincent i read that the cell chip would have a much larger
cache.

gerold.



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