Novel approach to building reusable and extensible compiler infrastructure. MLIR aims to address software fragmentation, improve compilation for heterogeneous hardware, significantly reduce the cost of building domain specific compilers, and aid in connecting existing compilers together.

Ground-up implementation of a Fortran front end written in modern C++. While it is capable of generating executables for a number of examples, some functionalities are still missing.

The Visualization Toolkit (VTK) is a C++ library for 3D computer graphics, image processing and visualization. It supports a wide variety of visualization algorithms including: scalar, vector, tensor, texture, and volumetric methods; and advanced modeling techniques such as: implicit modeling, polygon reduction, mesh smoothing, cutting, contouring, and Delaunay triangulation. VTK has an extensive information visualization framework, has a suite of 3D interaction widgets, supports parallel processing, and integrates with various databases on GUI toolkits such as Qt and Tk.

The RPI is a lightweight framework to encapsulate image registration algorithms.

QtDCM implements several Qt widgets for manipulating Dicom data. With QtDCM, it is possible to explore a Dicom CD-ROM, to search and download from a PACS (Pictures Archive and Communications System) and to convert series of images to the nifti format. Thanks to its simple design, QtDcm is very easy to integrate in other application (see the example directory in the code).

medInria is a multi-platform medical image processing and visualization software. medInria offers from standard to cutting-edge processing functionalities for your medical images such as 2D/3D/4D image visualization, image registration, diffusion MR processing and tractography.

TTK

The Insight Toolkit (ITK) is a toolkit for N-dimensional scientific image processing, segmentation, and registration. Segmentation is the process of identifying and classifying data found in a digitally sampled representation. Typically the sampled representation is an image acquired from such medical instrumentation as CT or MRI scanners. Registration is the task of aligning or developing correspondences between data. For example, in the medical environment, a CT scan may be aligned with a MRI scan in order to combine the information contained in both.

DCMTK is a collection of libraries and applications implementing large parts the DICOM standard. It includes software for examining, constructing and converting DICOM image files, handling offline media, sending and receiving images over a network connection, as well as demonstrative image storage and worklist servers.

PaMPA is a C library for dynamic parallel remeshing and redistribution of unstructured meshes.

SimGrid is a scientific instrument to study the behavior of large-scale distributed systems such as grids, "clouds", HPC, and P2P systems. It can be used to evaluate heuristics, prototype applications or even assess legacy MPI applications.

METIS is a set of serial programs for partitioning graphs, partitioning finite element meshes, and producing fill-reducing orderings for sparse matrices. The algorithms implemented in METIS are based on the multilevel recursive-bisection, multilevel k-way, and multi-constraint partitioning schemes.

SLURM is a fault-tolerant and highly scalable cluster management and job scheduling system for large and small clusters. It allocates access to resources (computer nodes) to users for some duration of time, provides a framework for starting, executing, and monitoring work (typically a parallel job) on a set of allocated nodes, and arbitrates contention for resources by managing a queue of pending work.

SCOTCH is a set of programs and libraries which implement the static mapping and sparse matrix reordering algorithms developed within the SCOTCH project. Its purpose is to apply graph theory, with a divide and conquer approach, to scientific computing problems such as graph and mesh partitioning, static mapping, and sparse matrix ordering, in application domains ranging from structural mechanics to operating systems or bio-chemistry.

SCOTCH is a set of programs and libraries which implement the static mapping and sparse matrix reordering algorithms developed within the SCOTCH project. Its purpose is to apply graph theory, with a divide and conquer approach, to scientific computing problems such as graph and mesh partitioning, static mapping, and sparse matrix ordering, in application domains ranging from structural mechanics to operating systems or bio-chemistry.

TopoMatch leverages on the Scotch library to handle any type of topologies and not only trees. Its main features are: - Handling any type of topologies (tgt Scotch format or hwloc format). - Handle large communication patterns (up to hundreds of thousands of processes and processing units) . - Manage binding constraints: you can specify a subset of the node onto which you want to do the mapping. - Manage oversubscribing: you can specify that more than one processes can be mapped onto a each processing unit. - Deal with logical numbering. Physical core numbering can be used with XML/HWLOC topologies. - Provide exhaustive search for small cases. - Adaptive algorithmic that provide a good trade-off between quality and speed. - Crucial sections of the code are multithreaded. - Optimize I/O to read large input files. - Portable on Unix-like systems (Linux, OS-X, etc.). - Many useful options (level of verbosity, topology optimization, partitioning, etc.).

The open source library MpiFx provides modern Fortran (Fortran 2003) wrappers around routines of the MPI library to make their use as simple as possible. Currently several data distribution routines are covered.

Fypp is a Python powered preprocessor. It can be used for any programming languages but its primary aim is to offer a Fortran preprocessor, which helps to extend Fortran with condititional compiling and template metaprogramming capabilities. Instead of introducing its own expression syntax, it uses Python expressions in its preprocessor directives, offering the consistency and versatility of Python when formulating metaprogramming tasks. It puts strong emphasis on robustness and on neat integration into developing toolchains.

Adiak is a library for recording meta-data about HPC simulations. An HPC application code may, for example, record what user invoked it, the version of the code being run, a computed time history showing density changes, or how long the application spent performing file IO. Adiak represents this metadata as Name/Value pairs. Names are arbitrary strings, with some standardization, and the values are represented by a flexible dynamic type system

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Conduit is a project from Lawrence Livermore National Laboratory that provides an intuitive model for describing hierarchical scientific data in C++, C, Fortran, and Python. It is used for data coupling between packages in-core, serialization, and I/O tasks.

HDF5 is a suite that makes possible the management of extremely large and complex data collections.

Pugixml is a C++ XML processing library, which consists of a DOM-like interface with rich traversal/modification capabilities, a fast XML parser which constructs the DOM tree from an XML file/buffer, and an XPath 1.0 implementation for complex data-driven tree queries. Full Unicode support is also available, with Unicode interface variants and conversions between different Unicode encodings which happen automatically during parsing/saving.

HDF5 tools for use by GEOS