Although the highly anticipated petascale computers of the near future will appear in the order of magnitude faster than today's fastest supercomputer?, Improved algorithms and applications for this class of computers remains a tough challenge. The book also discusses computational aspects that include the Uintah framework, Enzo code, multithreaded algorithms, petaflops, performance analysis tools, multilevel finite element solvers, finite element code development, Charm + +, and the Cactus framework. Provide petascale tools, programming methodologies, and eight-page color insert, this book addresses issues that challenge the development of application code that can take advantage of the architectural features of the new petascale systems in advance of their first deployment.