How to turn off hyperthreading? at DVinfo.net

Richard Alvarez · June 9th, 2004, 02:56 PM

Gang,
Recently had my system upgraded to dual xeons, and some aspects of Avid XpressPro are now sluggish. I see Avid reccomends turning OFF hyperthreading with dual xeons.

Can someone tell me how to accomplish this? (I know its "In my BIOS" but I need a bit more instruction.)

Thanks.

Mike Rehmus · June 9th, 2004, 10:42 PM

Xeons don't have HT, do they?

HT is managed by the BIOS so you need to enter BIOS setup at startup and turn off HT. That is assuming a dual Xeon MB has such a setting.

Richard Alvarez · June 10th, 2004, 07:28 AM

Yup, they have hyperthreading. THe dual Xeons show up as four processors in my task manager.

How does one "Enter the BIOS" at setup? I'm not particularly computer literate.

Mike Rehmus · June 10th, 2004, 12:05 PM

normally the first or second screen will have a text message that tells you which keyboard keys to push to enter the BIOS setup.

Most frequently that is the Del key.

George Ellis · June 10th, 2004, 12:51 PM

As Mike said, or it could be F2, F10, or F12 depending on the machine. It may say Press xxx to Enter Setup during the first boot screen. It will then be one of the opens in one of the areas in BIOS. It will not be on the first page that will show which usually has the time and date. Read the key descriptions from that point.

I wonder if Avid will fix their issue?

Richard Alvarez · June 10th, 2004, 06:04 PM

It's not an "issue" as they see it. They reccomend hyperthreading for singles, just not doubles. Other programs are much the same.
Thanks for the input, I'll see if it makes a difference.

Adrian Douglas · June 10th, 2004, 09:36 PM

Richard if you are not sure of what you are doing then I wouldn't recommend making BIOS changes. If you change the wrong thing you could affect something critical so you'd be better getting someone who knows what to do to do it for you.

Richard Alvarez · June 11th, 2004, 04:56 AM

Adrian,
I understand your concern, and feel exactly the same way. At this point, I am not certain its a hyperthreading issue. I am chasing down the possibility that it is a 'refresh' issue. So the Bios adventure is on hold.

June 9th, 2004, 02:56 PM	#1
Richard Alvarez Inner Circle Join Date: Sep 2002 Location: San Mateo, CA Posts: 3,840	How to turn off hyperthreading? Gang, Recently had my system upgraded to dual xeons, and some aspects of Avid XpressPro are now sluggish. I see Avid reccomends turning OFF hyperthreading with dual xeons. Can someone tell me how to accomplish this? (I know its "In my BIOS" but I need a bit more instruction.) Thanks.

June 9th, 2004, 10:42 PM	#2
Mike Rehmus Wrangler Join Date: May 2002 Location: Vallejo, California Posts: 4,049	Xeons don't have HT, do they? HT is managed by the BIOS so you need to enter BIOS setup at startup and turn off HT. That is assuming a dual Xeon MB has such a setting. __________________ Mike Rehmus Hey, I can see the carrot at the end of the tunnel!

June 10th, 2004, 12:05 PM	#4
Mike Rehmus Wrangler Join Date: May 2002 Location: Vallejo, California Posts: 4,049	normally the first or second screen will have a text message that tells you which keyboard keys to push to enter the BIOS setup. Most frequently that is the Del key. __________________ Mike Rehmus Hey, I can see the carrot at the end of the tunnel!

June 10th, 2004, 09:36 PM	#7
Adrian Douglas Trustee Join Date: Oct 2001 Location: Chigasaki, Japan. Posts: 1,660	Richard if you are not sure of what you are doing then I wouldn't recommend making BIOS changes. If you change the wrong thing you could affect something critical so you'd be better getting someone who knows what to do to do it for you. __________________ Adrian DVInfo.net Search for quick answers Where to buy? From the best in the business...DVInfo.net sponsors

June 10th, 2004, 07:28 AM	#3
Richard Alvarez Inner Circle Join Date: Sep 2002 Location: San Mateo, CA Posts: 3,840	Yup, they have hyperthreading. THe dual Xeons show up as four processors in my task manager. How does one "Enter the BIOS" at setup? I'm not particularly computer literate.

June 10th, 2004, 12:51 PM	#5
George Ellis Trustee Join Date: Feb 2004 Location: Suwanee, GA Posts: 1,241	As Mike said, or it could be F2, F10, or F12 depending on the machine. It may say Press xxx to Enter Setup during the first boot screen. It will then be one of the opens in one of the areas in BIOS. It will not be on the first page that will show which usually has the time and date. Read the key descriptions from that point. I wonder if Avid will fix their issue?

June 10th, 2004, 06:04 PM	#6
Richard Alvarez Inner Circle Join Date: Sep 2002 Location: San Mateo, CA Posts: 3,840	It's not an "issue" as they see it. They reccomend hyperthreading for singles, just not doubles. Other programs are much the same. Thanks for the input, I'll see if it makes a difference.

June 11th, 2004, 04:56 AM	#8
Richard Alvarez Inner Circle Join Date: Sep 2002 Location: San Mateo, CA Posts: 3,840	Adrian, I understand your concern, and feel exactly the same way. At this point, I am not certain its a hyperthreading issue. I am chasing down the possibility that it is a 'refresh' issue. So the Bios adventure is on hold.