The bulk of computing resources available to US physicists working on the  ATLAS experiment at the Large Hadron Collider is found at a “Tier 1” center at Brookhaven National Laboratory and at four “Tier 2” centers spread around the  United States.  One of these four is called the Northeast Tier 2 Center (NET2). NET2 is located at the MGHPCC and is operated as a collaboration between Boston University and Harvard University.  NET2 also shares its resources via the Open Science Grid so that projects like LIGO  can compute on NET2 during times of off-peak demand.