1. HECRTF Federal plan for high-end computing: Report of the high-end computing revitalization task force 2004
2. NERSC Doe greenbook-needs and directions in high-performance computing for the office of science 2005
3. Kothe DB Science prospects and benefits with exascale computing 2007
4. SciDAC http://www.scidacreview.org/1001/html/energy.html
5. Top500 supercomputers 2008 http://top500.org.