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Subject: Re: Another thing..

Author: Vincent Diepeveen

Date: 12:08:36 10/02/02

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On October 01, 2002 at 16:16:48, Robert Hyatt wrote:

No shop sells quad p4's bob.

I don't know where you have the guts to simply put lies here.

Note that there doesn't exist a publicly released chipset even
which supports it.

All there is, is failed experimental stuff.

as you indicate all your machines are quad P3s. You probably
don't even know what a P4 looks like :)

>On October 01, 2002 at 09:34:16, Vincent Diepeveen wrote:
>
>>On September 30, 2002 at 15:05:48, Robert Hyatt wrote:
>>
>>>On September 30, 2002 at 02:13:54, Aaron Gordon wrote:
>>>
>>>>On September 29, 2002 at 23:43:26, Robert Hyatt wrote:
>>>>
>>>>>1.  I didn't see anyone post _any_ 1.7x number for AMD when I asked for them
>>>>>a week or two back.
>>>>
>>>>It was in a seperate post. Slate benched a number of the latest binaries I
>>>>compiled with automatic parallelization.
>>>>
>>>>>2.  I don't see how the binary is going to affect this at all.  You should
>>>>>get the same ratio of single to dual whether you use a fully-optimized binary
>>>>>or one with no optimizing at all.  Since the dual speed is relative to the
>>>>>single cpu version, the base NPS is unimportant.
>>>>
>>>>Perhaps you should test this yourself if you can. Slate got 1.4x with your
>>>>binary, 1.7x with mine.
>>>>
>>>>>No, actually I am using a quad intel machine.  Where are the quad AMDs?  Why
>>>>>do you think there are none?  Think about "scaling"...
>>>>
>>>>Clawhammers & Opterons will be out in a few months and there has already been
>>>>pictures posted of dual/quad Hammers. Also if I recall correctly
>>>>my single Athlon is faster than your Quad.
>>>
>>>I wouldn't argue that point.  My quad 700 is getting around 1.6M nodes per
>>>second using the intel compiler.  However, a quad itanium-2 shows a lot more
>>>promise, if raw speed is the issue.
>>>
>>>I'm more interested in a slower quad than a faster dual, because the 4 processor
>>>machine is more difficult to use efficiently, and that is what the parallel
>>>search is all about.
>>
>>I saved this great statement to harddisk :)
>>
>>>
>>>> :) My board + chip now days costs
>>>>$154 together. I'm sure it would still cost over $500 to build that quad you
>>>>have which is slower. :) The gap would be huge if you drop a 2600+ in here and
>>>>even more so with a 2600+ at 2.5GHz. A quad may 'sound' nice but if all the cpus
>>>>are slow then whats the point?
>>>
>>>There are some fast quads out.  I've seen linux output from a quad 2.2 intel
>>>machine (xeon-based).  There are plenty of 1.5-1.6ghz quads around, but the
>>>processors are not compatible with my older MB.
>>
>>It is known that intel tried to produce a few quads for experimental reasons,
>>but i do not know a single quad P4 which i can buy in a shop. Even if it is
>>a 'slow' 1.6ghz quad :)
>
>
>I found several.  I just had a quad 1.6 machine shipped to me by mistake and
>sent it
>on to the right end user.  I have _seen_ actual output from a quad 2.2 but I
>have not
>seen the machine advertised.
>
>
>>
>>Also i would be pretty amazed if a quad P4 runs stable for more than
>>5 minutes after booting, not to mention what happens if you write down
>>'mt 4' in crafty :)
>
>Why?  Every quad intel box I have owned has run perfectly, reliably, and
>for extended periods of time.  I have 9 quad 550 xeon boxes, my quad 700
>xeon box, a quad 400 xeon box, and all were reliable from day 1.  I also have
>an old quad p6-200 that _still_ runs perfectly.
>
>
>
>
>
>>
>>Best regards,
>>Vincent
>>
>>>
>>>
>>>
>>>>
>>>>>Except that I can buy a quad or 8-way P4 system, but not an AMD.  And now
>>>>>they get left in the dust...  Not cheap of course..  But not even doable with
>>>>>AMD.
>>>>
>>>>See above.



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