[K12OSN] 64bit computing and LTSP

pauls at tclcommunications.co.nz pauls at tclcommunications.co.nz
Sat Apr 10 13:07:41 UTC 2004

> unfortunately. The major difference is in the amount of memory that the
> CPU can address. With a 32bit CPU, it's 4GB. With 64bit, the theoretical
> max is 18 million terabytes. Quite a jump :)
> Take a look at this article if you really want to get into the nitty
> gritty: http://www.arstechnica.com/cpu/03q1/x86-64/x86-64-1.html
> Obviously there aren't any platforms that can support anywhere near that
> amount of RAM today. But on a 64bit platform you can fill all your DIMM
> slots with 4GB sticks and the CPU will be able to use all of it, which
> means you can have just about everything cached. Where that really makes
> a difference today is in large databases, but an LTSP server can benefit
> too. The ability to have just about every app on the server cached will
> make things nice and speedy...until you hit the next bottleneck that is :)

LTSP  on a 64 bit-dual/quad Opteron with 16G ram/32G ram  could be the "killer 
application" that the AMD was built for.? 
> If you already have a server, I wouldn't run out and replace it with a
> 64bit setup just yet. Most of the benefit is down the road. Anyone in
> the market for a new server should probably take a long look at an
> Opteron setup though.

probably cost comparable with great potential

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