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This project will develop simulation tools for solving multiscale and multiphysics problems based on finite difference and finitevolume methods on logicallyrectangular structured grids combined with block structured adaptive mesh refinement to represent multiscale behavior. This center will build on the previous accomplishments of the first round of SciDAC investments, to achieve the following goals: to support computational scientists who wish to use multiresolution tools to solve scientific problems in support of the Department’s science objectives, including astrophysics, combustion and fusion to obtain uniformly highperformance for APDEC software, including parallel scalability to thousands of processors to hundreds of thousands of processors; and to develop new adaptive mesh refinement capabilities required by applications stakeholders, such as fourthorder finite volume methods, adaptive mesh refinement for Maxwell’s equations, highperformance solvers for anisotropic problems, new methods for treating complex geometries, and particle and hybrid particle/continuum methods. The APDEC center will primarily support computational scientists who wish to use multiresolution tools to solve scientific problems in support of the Department of Energy missions. Potential collaborations include astrophysics, combustion and magnetic fusion. In all of these areas, there are one or more SciDAC projects that have specific requirements that can be met by APDEC. APDEC will interact with science applications developers of structuredgrid adaptive methods on a variety of issues including model analysis, algorithm design, domainspecific modifications to the algorithms and software, and debugging. Center for Enabling Technology: Applied Mathematics Project Title: The Applied Partial Differential Equations Center for Enabling Technologies (APDEC)
Principal Investigator: Phillip Colella Project Webpage: hpcrd.lbl.gov/APDEC/
Participating Institutions and CoInvestigators: Funding Partners: Office of Science — Office of Advanced Scientific Computing Research Budget and Duration: Approximately $3.1 million per year for five years ^{1} Other Media:
Other SciDAC Enabling Technologies Centers
^{1}Subject to acceptable progress review and the availability of appropriated funds

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