the Binary Black Hole Grand Challenge Alliance are:

- To develop a problem solving environment
**for the Nonlinear Einstein equations describing General Relativity, including**

a dynamical adaptive multilevel parallel infrastructure**.** **To provide controllable convergent algorithms to compute gravitational waveforms which arise from Black Hole encounters, and which are relevant to astrophysical events and may be used to predict signals which for detection by future ground-, and space-, based detectors.****To provide representative examples of computational waveforms.**