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Features |
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HiFlow3 provides a great range of features and functionalities that go beyond standard Finite Element software toolkits. In the following, we list the most essential ones among these:
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#### I/O:
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* Generic, flexible and competent interface via xml input files
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* Parallel and sequential mesh I/O in VTK format
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* User-extensible I/O concept
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#### Usability:
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* Easy-to-set-up user applications facilitated using powerful HiFlow3 core library
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#### Mesh treatment, FEM and DoF setup:
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* Dimension-independent treatment of meshes
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* Indexing and iteration via topological and geometrical data computation and storage
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* Triangular, quadrilateral, tetrahedral, hexahedral and pyramidal cells
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* User-extensible cell type concept with arbitrary dimension
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* Association of user data to mesh entities of all dimensions
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* Computation of all sub-entity and neighborhood relations through a highly interconnected FEM and DoF module
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* Simple iteration over entities, sub-entities and neighbor entities
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* User-extensible iterators
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* Continuous and discoutinuous Galerkin elements
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* Isotropic and adaptive refinement and coarsening of all cell types
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* Arbitrary refinements via user-defined refinement trees
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* Communication of distributed meshes over MPI
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* Mesh partitioning and distribution
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* Interface to METIS abd ParMETIS library for partitioning
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* h- or p-refinement
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#### Uncertainty quantification for PDE problems:
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* Generalized Polynomial Chaos Expansion (gPCE)
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* Hyperbolic truncature
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* Mixed multivariate distributions
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* Legendre and Hermite basis polynomial expansions
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* User-extensible Chaos Polynomial interface
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* Preconditioner: Mean-based, Multilevel, ILU
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* Special linear algebra routines and structures suitable for stochastic spectral methods
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#### High-Performance Computing and Parallelization:
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* Parallel data management, distributed data structures, data movement
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* Highly efficient, scalable Linear Algebra and Solver module (among others with GMRES-, FGMRES-, PGMRES, CG-, PCG-Solvers and Block-Jacobi type of Preconditioners)
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* Local LA toolbox provides the basic classes for the local multi-platform linear algebra objects (vector, matrices, preconditioners)
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* Global LAtoolbox provides the global communication layer including managing coupling data; local data handling via the "lmpLAtoolbox" (multi-platform LA toolbox)
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* Interfaces to PETSc and Hypre Preconditioners Libraries
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* Hardware-aware multi-platform-capable implementation of solvers and FE code structure
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* Interfaces for Intel and AMD multi-core CPUs (OpenMP parallel algorithms, Intel MKL, ATLAS) and NVIDIA GPUs (CUDA, CUBLAS).
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#### Quality Management and Documentation:
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* Quality checks and comprehensive test suite available and automatically executable (currently 23 tests, all automated)
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* Benchmark applications and tutorials included and well documented
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* Doxygen documented routines; incode documentation of all core functions |
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