Markus: My guess is that you have either a dual-core or a hyperthreaded processor. Hyperthreading caps the CPU usage for any process at 50%. It can be shut off by going through the BIOS setup for your machine. For the dual-core, I am not sure if you can configure the BIOS to use both processors for one particular task (I don't have a dual core).
Mike Mike R. Saunders Forest Biometrician Cooperative Forest Research Unit University of Maine 5755 Nutting Hall Orono, ME 04469-5755 207-581-2763 (O) 207-581-2833 (F) ----- Original Message ----- From: "Markus Preisetanz" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, August 07, 2006 8:31 AM Subject: Re: [R] CPU Usage with R 2.1.0 in Windows (and with R 2.3.1) ... I have exactly the same issue with R 2.3.1 . The Question is: Why is R unable to take more CPU space to make the calculation process go faster? In my case no hardisk nor any network device is involved (data in RAM, 600 of 1024 MB filled) - and the CPU usage of the rgui-process does not exceed 50%. Has anybody an idea? Is there a setting a can change? Sincerely, Markus ____________________________ Markus Preisetanz Consultant Client Vela GmbH Albert-Roßhaupter-Str. 32 81369 München fon: +49 (89) 74217-113 main: +49 (89) 74217-150 fax: +49 (89) 74217-250 [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> http://www.clientvela.com <http://www.clientvela.com/> Diese E-Mail enthält vertrauliche und/oder rechtlich geschützte Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese Mail. Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser E-Mail ist nicht gestattet. This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received the e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx From: Doran, Harold <HDoran_at_air.org <mailto:HDoran_at_air.org?Subject=Re:%20%5BR%5D%20CPU%20Usage%20with%20R%202.1.0%20in%20Windows> > Date: Wed 20 Jul 2005 - 04:59:34 EST Dear Michael: Why is it a problem that R is not using more CPU space than it seems to need? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Greene, Michael Sent: Tuesday, July 19, 2005 2:29 PM To: '[EMAIL PROTECTED]' Subject: [R] CPU Usage with R 2.1.0 in Windows Hi, I'm using a fairly simple HP Compaq desktop PC running Windows 2K. When running a large process in R, the process "RGUI.exe" will never exceed 50% of the CPU usage. The program used to be able to use more of the computer, but does not now. I don't believe this is a multiple processor machine. Can anyone give any advice on how to solve the problem? Thanks, Michael Greene Product Management Plymouth Rock Assurance Corp 617-951-1682 [[alternative HTML version deleted]] -------------------------------------------------------------------------------- > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
