youtube for the day/ ibm blue waters/photonics supercomputer

Blue waters is a new supercomputing facility to be fnished and computing this summer. Blue waters involves at least a certain amount of photonics(the info buses between chips).  Computing takes a certain amount of energy which gets dissapated as heat.  Photonics can make the heat problem almost existent and certainly negligable. What's amazing is this isn't just some little photonics computer prototype; it's a whole football field sized photonics supercomputer!  Perhaps what's really amazing about all this is that it will almost certainly become obsolete long before the timetables they suggest of its operating.  I would think nanotechnology will advance fast enough to make this whole supercomputer obsolete.