Re: [R] CPU Usage with R 2.1.0 in Windows

From: Lukasz Komsta <>
Date: Wed 20 Jul 2005 - 05:20:54 EST

Dnia 2005-07-19 20:28, Użytkownik Greene, Michael napisał:

> 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.

If you have hyperthreading, R catches only one virtual processor (from two available), being not able to exceed half of total power (100% of one only). If you want to use full power, you should turn hyperthreading off, if your BIOS supports such option.


Lukasz Komsta
Department of Medicinal Chemistry
Medical University of Lublin
6 Chodzki, 20-093 Lublin, Poland
Fax +48 81 7425165 mailing list PLEASE do read the posting guide! Received on Wed Jul 20 05:23:03 2005

This archive was generated by hypermail 2.1.8 : Fri 03 Mar 2006 - 03:33:50 EST