Software Version Control SubVersion software version control system WebSVN graphical interface o View version history logs o Browse directory structure o Compare versions

Build System GNU AutoMake and AutoConf o Tools for automatically configuring and building software source code packages for many Unix-like systems o Implemented for FMDB o Ongoing effort to migrate remaining tools

Compliance Testing NightlyBuild System o For each tool scripts download and build the software, and execute tests. o A mechanism monitors the execution of scripts and refers project owner(s) via to log files upon failure. o Currently implemented for FMDB Project o Ongoing effort to migrate other ITAPS tools

F lexible distributed M esh D ata B ase

FMDB: Overview General topology-based mesh database o topological mesh entities o geometric model classification o entity adjacencies Provide general mesh representation and operations o mesh topology, geometry and adjacency queries o distributed mesh data structure representation Performs both in serial and in parallel A part of component tools of ITAPS

FMDB: Software Aspects Performing in parallel involves: o proper communication for part boundary entity o mesh migration with user data o mesh partition o support multiple parts per process o mesh migration with user data o ghosting layer construction Parallel support is provided through: o IPComMan o Zoltan o iZoltan with iMeshP interface

FMDB: Software Aspects Open source software, downloaded by world-wide users o we do not track the users, but we have provided help to users outside US Provide a complete set of APIs to applications o mesh-level APIs o entity-level APIs o utility APIs Compliance with iMesh/iMeshP/iGeom ITAPS interfaces o iMeshP compliance tests Migration and entity exchange Partition and part tests and part boundary entity queries Ghost entity functions o iMesh compliance tests Entity topology and adjacency query functions

FMDB: Software Aspects Used by mesh improvement tools o MeshAdapt o Curved mesh tools o Mesquite Used by finite element analysis o PHASTA RPI group o AMSI RPI group Support meshes with periodic boundary conditions both in serial and in parallel

FMDB: Future Efforts Full compliance with iMesh/iMeshP/iGeom/iRel/iField ITAPS interfaces Interoperable with more mesh improvement tools and finite element analysis Improve parallel scalability and efficiency in runtime and memory Provide better memory control on memory in mesh data structure and parallel operations

SCORECModel

SCORECModel: Overview Support geometric model of problem domain Support for ITAPS iGeom common interface Geometric model based on boundary representation Topological queries based on the primary topological entities and their adjacencies Pointwise interrogations support Entity level tags for data association

SCORECModel: Software Aspects Provide geometric query information for mesh adaptation service o Topological queries Entity/Entity Set adjacency, iterator …. o Pointwise geometric interrogation Closest point, normal, curvature …. Support different CAD modeler o Parasolid, Acis o Mesh model

SCORECModel: Software Aspects Used by mesh modification tools o MeshAdapt o Curved mesh tools Used by Mesh DataBase o FMDB Used by finite element analysis o AMSI RPI group o PHASTA RPI group

SCORECModel: Future Efforts Ongoing efforts towards full compliance with iGeom interface Construction of parallel geometry interfaces

MeshAdapt

MeshAdapt: Overview Provides adapted mesh Input: o a mesh o an anisotropic size field assigned to the mesh Output: o a mesh that satisfies the given size field An ITAPS Component Tool Performs in serial and parallel Interacts with different mesh database

MeshAdapt: Software Aspects Performing in parallel involves: o proper communication for each modification procedure o mesh migration o dynamic load balancing Parallel support is provided through: o IPComMan o Zoltan o iZoltan with iMeshP interface

MeshAdapt: Software Aspects Used by: o SLAC o PPPL o PHASTA RPI Group o AMSI RPI Group Required by ITAPS in Solution Adaptive Loop Tool Mesh topology, geometry and adjacency queries are done through the interaction with mesh database o Serial iMesh (interface with FMDB) FMDB Simmetrix o Parallel iMeshP (partial functionality, interface with FMDB) FMDB

MeshAdapt: Future Efforts Build a complete interface through API’s for iMesh/iMeshP, and others meshes and geometry Provide serial and parallel interface for Solution Adaptive Loop Tool Improve parallel scalability and efficiency Take full advantage of the neighborhood concepts Provide better memory control on part and while communicating with other parts

IPComMan: Overview General-purpose communication package built on top of MPI Improves inter-processor communications for massively parallel computers Created for computations characterized by large numbers of messages of various sizes Introduces a concept of neighborhood to take advantage of local communication Eliminates or reduces the number of needed collective calls Designed specifically for dynamic and irregular computation A Component Tool that can be made available for ITAPS

IPComMan: Software Aspects API is based on the functions at the MPI level with message support only Stand-alone software; API can be easily adapted to any code which needs message exchange Currently used by: o FMDB o MeshAdapt Supports iMeshP interface

Curved Mesh Tool

Curved MeshTool: Overview Provides functional interfaces to work with high-order curved meshes Adapt linear meshes into high-order meshes with curved elements Identify and correct invalid elements in high-order meshes Improve the element shape quality through a series of mesh modification operations An ITAPS Component Tool Interacts with different mesh database

Curved MeshTool: Software Aspects Dependency on: o FMDB o MeshAdapt Required by ITAPS: o MeshAdapt o Mesh Improvement Used by ITAPS applications: o Provides SLAC with curved meshes to support the high order electromagnetic simulations

Curved MeshTool: Future Efforts Construction of iMesh/iMeshP compatible interface Parallel implementation Integration into MeshAdapt