On Tue, Oct 20, 2009 at 02:19, Prashanth Mohan <prashmo...@gmail.com> wrote: > Hello, > > I am looking at mechanisms to save energy on ganglia clusters. I was > wondering if there is any ongoing or previous work in this regard. The
Always an interesting and useful subject. Have you seen project Hedeby from Sun? It sounds like a similar sort of idea: http://hedeby.sunsource.net/ I keep meaning to try putting it on my cluster, but lack of time... <sigh> > idea is essentially to put Idle machines to sleep and wake them up > (perhaps using wake-on-lan) when there is a job to be run on the node IPMI is frequently a better choice, but isn't available everywhere. Wake-on-LAN can be flaky, but may be more common. > (using Gexec). While GMond will make the decision as to whether (and > when) to put the machine to sleep, Gexec will perform appropriate > scheduling based on the power-performance tradeoff that the user > provides. This is very much in line with what Hedeby does. > Also, where can I find statistics about the largest Ganglia clusters? > This is basically for knowing whether Ganglia production clusters are > large enough so that we can add scheduling logic that appropriately > turns off machines which are spatially together, so that the HVAC > resources for the particular area can also be turned off (further > saving energy). There was a thread about this on the list some months ago. I suggest trying to that as a start. There are definitely some large systems out there (thousands of nodes). You can also look for (some) pages that link back to Ganglia, which will include a lot large clusters: http://www.google.com/search?q=link:http://ganglia.sourceforge.net/ -- Jesse Becker ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ Ganglia-developers mailing list Ganglia-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-developers
