Third-Party Dependencies

The majority of third-party dependencies are open-source and available from public internet endpoints. Table 3 contains details for each dependency including the version, license, and description of usage by the uPSP software.

The only current commercial dependency is the Message Passing Interface (MPI) implementation used for operation of the uPSP software on the National Advanced Supercomputing (NAS) cluster at NASA Ames. The dependency is via shared library linking at build time and is required for leveraging parallelization across NAS cluster nodes. Prior to release of uPSP source code to non-NAS environments, this dependency will be revisited to identify proper alternatives (there are open-source MPT/MPI implementations available, however, they are not needed in the NAS environment).

Table 3 Third-Party Dependencies

Name	Version	License	Description of usage
Boost	1.68.0	Boost License	C++ routines for efficient data structure manipulation (e.g., array iterators)
CMake	3.20.5	3-clause BSD	Build system for uPSP project
Eigen	3.3.9	MPL2	Header-only software dependency, used for high-performance linear algebra and matrix mathematics
gcc	8.2	GPLv3	Compiler used to build C/C++ uPSP applications (usage is covered under GPLv3 GCC runtime exception)
GOMP	1.0.0	GPLv3	GNU implementation of the OpenMP specification, for parallelization of uPSP processing (usage is covered under the GPLv3 GCC runtime exception)
GTest	1.11.0	3-clause BSD	Unit testing for C/C++ uPSP applications as part of the uPSP build system.
HDF5	1.12.0	HDF5 License	Some uPSP output data artifacts are encoded in the HDF5 format.
JSON for Modern C++	3.9.1	MIT	Header-only software dependency, used for parsing JSON files.
kdtree	0.5.7	3-clause BSD	C library for working with KD-trees, used as part of the camera-to-model data projection process.
Matplotlib	3.3.2	PSF-like	Plotting routines for Python uPSP applications.
Numpy	1.19.2	3-clause BSD	Scientific computing for Python uPSP applications.
OpenCV	4.5.2	3-clause BSD	Computer vision processing (image registration and p ost-processing).
OpenEXR	2.5.0	Modified BSD	The IlmBase library (component of OpenEXR) is used for high-performance raycasting as part of the camera-to-model data projection process.
pbrt-v3	3	2-clause BSD	High-performance raycasting as part of the camera-to-model data projection process. Several source code files from the pbrt project are copied + modified and distributed as part of the uPSP source code.
Python	3.7.9	PSF License	The Python interpreter is a necessary system dependency for running some uPSP pipeline applications. (The Python interpreter itself is not modified or redistributed as part of the release.)
Scipy	1.6.0	3-clause BSD	Scientific computing for Python uPSP applications.
SGI MPT	2.17	Commercial License	uPSP software built for deployment on the NASA Advanced Supercomputing (NAS) facility leverages the NAS-provided commercial implementation of the MPI 1.1 specification for scaling of parallel processing across the NAS cluster nodes. The library is linked to uPSP applications as a shared library.