Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Technology Stocks : Advanced Micro Devices - Moderated (AMD) -- Ignore unavailable to you. Want to Upgrade?

To: milan0 who wrote (72772)	2/28/2002 6:03:39 PM
From: Ali Chen	Read Replies (3) \| Respond to of 275872

Mike, "if this option is Disabled, is hyperthreading also Disabled?" I would guess so. In the sense that OS will see only one (bootstrap) processor, the no other hardware will be activated. It will look like a single processor system. Therefore OS will not dispatch any extra threads in parallel, so no extra performance from HT. However, if the system was originally configured as a multiprocessor system, it will use a distinctive MP kernel for OS. After other processors are being disabled, the system will continue to use the same MP kernel, and the task switching will carry some overhead. So the performance of MP kernel on single processor is lower than that for the single-processor kernel. Therefore the comparisons in the article are not valid, accurately speaking anyway. If there are no specific BIOS switch to enable/disable hyperthreading explicitly, this is really a matter of 1 versus 4, so your concerns are valid. - Ali P.S. "concerning electron migration" Honestly, I know very little about electromigration, so it is unlikely that I contributed anything to clarify the subject. But it could be something else, so I thank you anyway ;-) ;-) ;-)