Sun Cancels Rock

Sun has shut the doors on its "game-changing" Rock chip.

Sun has been working on the Rock project for more than five years, hoping to create a chip with many cores that would trounce competing server chips from I.B.M. and Intel. The company has talked about Rock in the loftiest of terms and built it up as a game-changing product. In April 2007, Jonathan Schwartz, the chief executive of Sun, bragged about receiving the first test versions of Rock.