Mail Archives: pgcc/1998/07/22/11:02:41
>>Now K6-350Mhz SDRAM at 112Mhz bus is slower than PII-300 EDO RAM.
>
>>Few months ago K6-200 used to be as fast as Pentium pro 200...
>>...right now nothing can stop PII, and especially not PII because i can
>>run parallel soon on it. AMD/IBM K6 and Cyrix M2 regrettably can't run be
>>put on a dual or quatro motherboard.
>
>>Anyway K6 is fast considering its price, but is it smart for a
>>compiler to make optimizations for an outdated socket 7 clone?
>
>>Assuming i have the choice, when selling software, then i'll
>>NEVER deliver a K6 optimized version, but always a PII/PRO optimized one,
>>which also runs at pentium (so without incompatible instructions like
cmove).
>
>>I'll do that because i think socket 7 is outdated. No future.
>>Look to the level 2 cache what they did to it. They put it at the
mainboard!!
>>Awfull! So socket 7 has no future, the faster your processor, the less
>>you profit from it as level 2 cache speed kills you.
>
>>That's what happens to my program when running on 350+ Mhz K6, it runs slow
>>on it. Slower than on a PII-266 SDRAM even, and one of the reasons is
>>level 2 cache.
>
>There is just one reason why I did not buy a Cray, an Ultra-Sparc or some
>other cpu which is faster than PII, it's the money I dont want to spend.
>
>When you divide the performance thru the price, still AMD is one of the best.
>What does it help when I pay three or four times more for a computer which
>will be absolutely outdated in next spring? So I will still buy cheep AMD,
>Cyrix or even IDT, because these are the fastet for the money I am willing
>to spend.
I already wrote this down. For it's performance it's cheap. Not needed to
tell this another time. It doesn't take away that the socket7 technology
is horribly outdated.
>What about selling your program bundled with a quattro-Xeon-board ;-)
I'm sure next Worldchampionship a lot will run on XEON or faster
(previous world championship, octobre 1997 a lot ran on Alpha,
two participants even ran at an experimental alpha 767Mhz!).
I can't afford such computers, therefore i make my program parallel.
A dual board is something like 300US dollar, a PII-333 chip will be around
250US within a few months, so i have 666Mhz then for a horrible cheap price,
which might equal a 500Mhz XEON (i estimate that i lose around
10% because of parallellism so i'm having a PII-600Mhz in fact when
compared to single CPU).
When the all categories world champs chesscomputer are held this quattro xeon
system will be not by far the fastest system. We can expect 1 cray entry,
a 32 processor sun/sparc, a 40 processor system (about speed of 200Mhz,
a 32 processor PII-300 system, and at least 1 4 processor system.
I might be forgetting some others running on multi-processor alpha's,
and optionally a french multiprocessor program might enter too at a
cray.
Although all of these systems are out of your reach, for others it's not.
>>Vincent
>--
>Wolfgang Formann
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