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To: Tenchusatsu who wrote (60437)	10/26/2001 1:04:38 PM
From: Milan Shah	Read Replies (2) \| Respond to of 275872

Let's not get that confused with "immediate x86-64 support" as most people are prone to doing. Actually, why not? If most people are going to be confused and will make their buying decisions based on this incorrect understanding, won't it serve the purpose we are all looking for, which is that there will be a mad scramble to buy AMD chips? Isn't precisely this kind of mis-understanding holding up the P4? I love the x86-64 idea - even if it never actually gets used. I remember way back when they introduced MMX, I actually made a decision to spend more money and buy an MMX chip instead of the non-MMX version, thinking there is an outside chance that some great software requiring MMX will come out, and I will regret not paying the $100 extra for MMX. And I have degrees in Computer Engineering! Milan

To: Tenchusatsu who wrote (60437)	10/26/2001 1:35:04 PM
From: AK2004	Read Replies (2) \| Respond to of 275872

Ten does not x86-64 run ia32 code? Regards -Albert

To: Tenchusatsu who wrote (60437)	10/26/2001 1:44:20 PM
From: dale_laroy	Read Replies (1) \| Respond to of 275872

>Let's not get that confused with "immediate x86-64 support" as most people are prone to doing.< This is not entirely true. I remember when IBM mainframes could support a 48MB physical address space, but only run 16MB partitions. With Hammer a similar situation will exist. Linux will be capable of running in x86-64 mode and addressing up to 48-bits of address space, but the actual applications will be x86-32, capable of addressing only 32-bits (36-bits if you want to get technical) of address space. As a result, Hammer will be capable of for example, running multiple copies of a database query application, with each utilizing less than 32-bits of address space.