<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML ><HEAD ><TITLE >Using Spare CPU Cycles</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="Linux Ecology-HOWTO" HREF="index.html"><LINK REL="UP" TITLE="Reduction of Power Consumption" HREF="ecology-howto-power-consumption.html"><LINK REL="PREVIOUS" TITLE="Energy Star Label" HREF="ecology-howto-energystar.html"><LINK REL="NEXT" TITLE="Miscellaneous Power Saving Techniques" HREF="ecology-howto-power-savings-misc.html"></HEAD ><BODY CLASS="sect1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Linux Ecology-HOWTO</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="ecology-howto-energystar.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 1. Reduction of Power Consumption</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="ecology-howto-power-savings-misc.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="sect1" ><H1 CLASS="sect1" ><A NAME="ecology-howto-cpu-cycles" ></A >1.7. Using Spare CPU Cycles</H1 ><P > Some Linux applications use idle time in computers to cure diseases, study global warming, or any other scientific research. They run as a low-priority process (nice 20), so you can work without noticing that it's doing its task. Another use is for people who use P2P software and leave the PC turned on for long hours unattended, all that time the PC can be using the electricity it is consuming for a practical purpose: <P ></P ><UL ><LI ><P > <A HREF="http://boinc.berkeley.edu/" TARGET="_top" >BOINC</A > </P ></LI ><LI ><P > <A HREF="http://distributed.net/" TARGET="_top" >Distributed.net</A > </P ></LI ></UL > </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="ecology-howto-energystar.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="ecology-howto-power-savings-misc.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Energy Star Label</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ecology-howto-power-consumption.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Miscellaneous Power Saving Techniques</TD ></TR ></TABLE ></DIV ></BODY ></HTML >