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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?


To: tejek who wrote (96107)3/1/2000 4:39:00 PM
From: Epinephrine  Read Replies (2) | Respond to of 1575981
 
RE: <I think Sledgehammer is a good idea but there are reasons why a company would want to migrate from 32 bit to 64 bit in the first place; presumably because 64 bit is better. If so, then why would they not simply convert their whole system over at one time? >

It was my understanding that 64 bit was primarily an advantage for large database servers for data mining etc. If this is the case then maybe Sledghammer doesn't have so much of an advantage in being able to run 32 bit code faster. If I was setting up a 64 bit datawarehousing server then that servers sole purpose would be to run that database and provide it's services over the network. What 32 bit code would I want to run on it? In my mind a server should run one thing and one thing only, that is it's purpose for existing so if my server is running a 64 bit database on a 64 bit os where is the need for 32 bits?

Thanks,

Epinephrine



To: tejek who wrote (96107)3/1/2000 4:44:00 PM
From: Scumbria  Read Replies (2) | Respond to of 1575981
 
Ted,

The discussion about 32 bit vs. 64 bit code has missed a very important point- code density.

x86 has always had an advantage over RISC because many more instructions fit in the cache, and each instruction does a lot more than a RISC instruction. It can be argued that an x86 instruction cache is 4X as efficient as a RISC cache.

If a 64 bit architecture expanded the instruction length, this problem would be aggravated further.

Scumbria