This question has been asked a billion times on Stackoverflow however, the focus has always been on Non-Numerical Coding. I am looking for a project to contribute to within the confines of Numerical Computing and High Performance Computing. I would ideally prefer a small project but that's not necessary.
What would be the best way to get involved in an open source project pertinent to SciComp? Where does one start looking for projects? What would be the best way to enter such a project? Feature Requests/Bugs/Documentation or other?
Looking at something like ATLAS or Nix, how do you go from N00B to active?