Hwloc
The hwloc software package provides a portable abstraction of the hierarchical topology of modern architectures
Cfitsio
CFITSIO is a library of C and Fortran subroutines for reading and writing data files in FITS (Flexible Image Transport System) data format.
2decomp_fft
Library for 2D pencil decomposition and distributed Fast Fourier Transform
ParMETIS
An MPI-based parallel library that implements a variety of algorithms for partitioning unstructured graphs, meshes, and for computing fill-reducing orderings of sparse matrices.
NetCDF
NetCDF is a set of software libraries and self-describing, machine-independent data formats that support the creation, access, and sharing of array-oriented scientific data.