Linear system datasets for hypredrive

hypredrive datasets This work hosts small datasets used by hypredrive examples and tests. All matrices and vectors are provided in HYPRE IJ format using a consistent naming convention:- Matrix prefix: `IJ.out.A`- RHS prefix: `IJ.out.b`- Partitioned runs store per-rank parts in subdirectories like `np4/`, with file suffixes `.00000[.bin]`, `.00001[.bin]`, etc.- Single-rank ASCII uses files without `.bin`; multi-rank (and some single-rank cases) use binary `.bin`. Datasets - ps3d10pt7: 3D Laplacian (scalar) with the standard 7‑point finite difference stencil- compflow6k: compositional multiphase flow problem simulated in GEOS.- poromech2k: sequence of linear systems for a multiphase poromechanics simulation in GEOS. Notes - Binary IJ files encode indices and values with widths recorded in the file header; hypredrive detects these automatically.- For provenance of third‑party inputs, see the dataset‑specific READMEs.