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-   -   9JCS Hyperthreading not working (https://www.madshrimps.be/vbulletin/f18/9jcs-hyperthreading-not-working-4374/)

Kerry 20th March 2004 22:17

9JCS Hyperthreading not working
 
I just discovered that Hyperthreading isn't working on my new with Chaintech 9CJS rig. Even though, on boot, it reads, Hyperthreading enabled.

My Windows Task Manager, Performance, only shows one CPU. Control Panel, System, Hardware, Devices, Processor, only shows one processor, however under Computer it reads ACPI MultiProcessor PC.

In Windows Task Manager, Performance, it only shows one processor.

Any tricks to getting this working correctly?

Thanks,

Kerry
XP Home

piotke 20th March 2004 22:19

Was HT enabled while installing Windows ? I tought it should be.

Kerry 20th March 2004 22:48

Yes. I recall that the boot screen was set for default hyperthreading enabled. I recall being relived to see that I didn't have tp do anything. Then I installed XP Home.

Thanks,

Kerry

jmke 21st March 2004 02:24

"Then I installed XP Home"

XP home doesn't support dual cpu systems, install XP Pro :)

Kerry 21st March 2004 02:54

Arg, mo money :=)

Would I notice much of a performance difference if I don't have any dual processor specific applications?

Thanks

Kerry

jmke 21st March 2004 12:05

There is a performance difference when you are multitasking a lot, meaning that no single application will be speedier then before, but if you use a lot of programs at the same time you will notice a speed increase over the single CPU setup. It won't we earth shattering, but quite noticable none the less. it speeds up day to day usage of the PC (encoding, file extracting, browsing, gaming, .. all at the same time at a faster pace then the none-HT system)

Kerry 21st March 2004 18:37

Thanks, I discovered that somehow hyperthreading had become disabled. Via, BIOS setting I enabled it and voila, I now have the two CPU Usage History graphs in Windows Task Manager, Performance.

Thanks,

Kerry

jmke 21st March 2004 18:43

hmm weird, Home XP doesn't support fully fledged dual CPU systems, guess it sees the HT enabled CPU as one?

should have done a bit of research before replying here :)
http://www.intel.com/support/platform/ht/os.htm

I blame the lack of sleep :)


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