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Technology Stocks : Advanced Micro Devices - Moderated (AMD)
AMD 217.53+1.5%Nov 28 9:30 AM EST
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To: Gopher Broke who wrote (72737)2/28/2002 10:59:19 AM
From: milan0Read Replies (2) of 275872
 
re: infoworld.com

First, note that the system used is a dual processor one:

"When booting to Windows 2000 or XP on our state-of-the-art Supermicro P4DC6 dual-Xeon DP test bed, we found that the OS was completely fooled by the virtualization scheme. Windows Device Manager dutifully reported the presence of four 2GHz Xeon CPUs, despite the fact that the system sported just two physical processors."

Also, the comparison between HTh and no HTh was done using a switch in BIOS:

" when serving SQL transaction data to a series of Windows 2000-based clients, our hyperthreading-enabled Xeon DP test bed delivered round-trip throughput an average of 46 percent faster than the same system with hyperthreading disabled (a simple BIOS switch controls the feature)."

Now, which 'switch' is that? I doubt that the BIOS has a switch for HTh, something like:

Hyperthreading On/Off

since the BIOS itself is fooled into seeing 4 processors. Would it not be rather something like:

Multiprocessor On/Off...?

In that case, would not the comparison be between 1processor vs (2 real processors + 2 virtual processors)?

Would that not explain the surprising scores?

Mike
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