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2CPU.com » News » February 2004 » AMD enhances the pitch for Opteron. But who's buying it?

AMD enhances the pitch for Opteron. But who's buying it?

Posted by: Jim on: 02/04/2004 02:18 PM [ Print | 5 comment(s) ]

ZDNet is running an article that questions AMD's marketing strategy with Opteron.
AMD has been hailing the migration attribute as one of Opteron


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duraid
SMP Qualified


Posts: 387
Joined: 2002-03-31

#26606 Posted on: 02/04/2004 07:52 PM


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Saundie
Asthenia


Posts: 96
Joined: 2003-05-04

#26607 Posted on: 02/04/2004 09:23 PM
Originally posted by Jim_

It
The Americans will always do the right thing... after they have exhausted all the alternatives - Sir Winston Churchill eBay & Heat feedback Phoenix -i7-3960x, 32gb PC3-12800, Asus P9X79 Pro, nVidia GTX 560Ti, 128GB & 256GB Crucial M4

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scheme
SMP user


Posts: 259
Joined: 2002-01-18

#26608 Posted on: 02/05/2004 12:28 AM
Originally posted by Saundie
I'm not sure what they're trying to say with the "stretch the addressable memory space" part, from my understanding the x86-64 based Opterons can address many terabytes, so the limitation would be in the size of PC3200 ECC sticks you could get - I doubt we're going to be seeing 256GB RAM modules in production any time soon.


A 64 bit system doesn't necessarily support 2^64 bytes of memory. Not all of the address lines are hooked up so although the system can address 2^64 bytes of memory it may only be able to address 1TB of physical memory. Depending on the OS, the other bits of the memory space could be used to separate memory spaces or not used at all.

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Saundie
Asthenia


Posts: 96
Joined: 2003-05-04

#26609 Posted on: 02/05/2004 12:45 AM
Originally posted by scheme:
A 64 bit system doesn't necessarily support 2^64 bytes of memory. Not all of the address lines are hooked up so although the system can address 2^64 bytes of memory it may only be able to address 1TB of physical memory. Depending on the OS, the other bits of the memory space could be used to separate memory spaces or not used at all.


Maybe so, but how far off are we from seeing a system that "may only be able to address 1TB of physical memory"? I'm probably wrong but the largest memory I've seen in a server is 32gb, so it seems to me that we're a good few years before the addressable memory becomes an issue.
The Americans will always do the right thing... after they have exhausted all the alternatives - Sir Winston Churchill eBay & Heat feedback Phoenix -i7-3960x, 32gb PC3-12800, Asus P9X79 Pro, nVidia GTX 560Ti, 128GB & 256GB Crucial M4

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sigo94
T-arget of opportunity



Posts: 130
Joined: 2000-09-10

#26610 Posted on: 02/06/2004 05:43 AM
I'm probably wrong but the largest memory I've seen in a server is 32gb


We have an 18-way AIX system with 80GB of system memory..

$ uname
AIX
$ lsattr -El mem0
size 81920 Total amount of physical memory in Mbytes False
goodsize 81920 Amount of usable physical memory in Mbytes False
$ lsdev -C | grep -c proc
18
$

P6DGE, 2xP2-600, 512MB PDB-R, 2xP!!! 850@952, 640MB DPL533, 2.8/533, 3GB PC3200 4xP2-450, 2GB RAM, 4x9GB&2x18GB in RAID (if 2 is better than 1, 4 is even better)

2CPU.com » News » February 2004 » AMD enhances the pitch for Opteron. But who's buying it?