Local Linux ClusterComputing on the local linux cluster:
- info about the cluster status using ganglia (works only internally). If you choose then "cluster linux" , you see in "choose a node" the available computers.
- from outside, you have first to connect via ssh to login.stud.ntnu.no (or login.ansatt.ntnu.no). From there you can connect in the next step to a local computer.
- use nice/renice to lower the priority of your processes
- you can ran processes in parallel using MPI. Multithread libraries in C++, such as pthread, are also available.
Ganglia
Ganglia provides a web-based user interface that can be used to view activity and available processes on the Linux cluster. It can only be accessed internally. To do this, use ssh to access one of the computers in the cluster. One need to use the optional argument -X (enables X11 forwarding) to a graphical web browser such as firefox. The arguments -Y (enables trusted X11 forwarding) and C (Requests compression of all data) can speed up the web browser.