[BALU] 64 bit systems
thomas at wsinnovations.com
Fri Jun 8 10:49:46 CDT 2007
The physical address space is 48 bits, so that limits the amount of real
ram in the system. However from a process's point of view the "virtual"
address space is 64 bits, and that could still be utilized with file
mapping and /or NUMA machines.
>Is not the address space only 48 bits, 256 terabytes
><http://en.wikipedia.org/wiki/Tebibyte>. (I am looking foward to
>buying 1 terabyte[1000 gigabytes] surplus memory).
>and the actual Ram only 40 bit addressing or just 1 terabyte of RA.
>But the registers and data width are 64 bits are they not.
>I think the 40 and 48 restrictions are only for memory ops.
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