Pentium 4 HT running 2 WUs even though told to use 1 CPU

Questions and Answers : Preferences : Pentium 4 HT running 2 WUs even though told to use 1 CPU

To post messages, you must log in.

AuthorMessage
Team AUSTRALIA (AlexD)

Send message
Joined: 1 Jun 99
Posts: 54
Credit: 66,602
RAC: 0
Australia
Message 8500 - Posted: 16 Jul 2004, 1:12:42 UTC

Recently installed BOINC/SAH onto a Pentium 4 3.2Ghz HT PC, configured my Home preferences to use one CPU, confirmed via the My account page that the PC was set to use the Home preference, did a project update, but it still insists on processing away on two WUs at once (and starting two instances of SAH).

Why is BOINC totally ignoring the setting of using only one CPU?

Note: It's a single physical CPU, but with "WinIntel"'s HyperThreading marketing ploy, it appears as two CPUs in WinXP Profession. So have the horrible thought that BOINC counts the preference of using one CPU in physical CPUs, but then finds two "virtual" CPUs and so starts two instances of SAH.

Thoughts?

ID: 8500 · Report as offensive
Bill Barto

Send message
Joined: 28 Jun 99
Posts: 864
Credit: 36,690,625
RAC: 18,359
United States
Message 8513 - Posted: 16 Jul 2004, 2:05:47 UTC

If you specify one cpu a hyperthreaded cpu will process only one wu at a time. Wait until one of the two wu's it is working on now is finished. BOINC should then only process one wu at a time.

ID: 8513 · Report as offensive
SURVEYOR
Volunteer tester

Send message
Joined: 19 Oct 02
Posts: 375
Credit: 608,422
RAC: 0
United States
Message 8525 - Posted: 16 Jul 2004, 3:09:59 UTC

Does the message tab say it is using the the Home preference?
You may have to update a couple of times.
Try exit BOINC and restarting it you will have to wait untill one of the wu is finish to see if you are back to one cpu.
Sometimes it take time to gatch up.
Fred
BOINC Alpha Tester
BOINC Beta Tester

ID: 8525 · Report as offensive

Questions and Answers : Preferences : Pentium 4 HT running 2 WUs even though told to use 1 CPU


 
©2016 University of California
 
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.