Mature solvers interfaces and execution backends

Notable new features

Interfaces of various solvers reached an equilibrium point after HiOp was interfaced with multiple optimization front-ends (e.g., power grid ACOPF and SC-ACOPF problems and topology optimization) both on CPUs and GPUs. The PriDec solver reached exascale on Frontier after minor communication optimizations. The quasi-Newton interior-point solver received a couple of updates that increase robustness. The Newton interior-point solver can fully operate on GPUs with select GPU linear solvers (CUSOLVER-LU and Gingko).

• Instrumentation of RAJA sparse matrix class with execution spaces by @cnpetra in #589
• Fix Assignment Typo in hiopMatrixSparseCsrCuda.cpp by @pate7 in #612
• Use failure not failed in PNNL commit status posting by @cameronrutherford in #609
• rebuild modules on quartz by @nychiang in #619
• Use constraint violation in checkTermination by @nychiang in #617
• MPI communication optimization by @rothpc in #613
• fix memory leaks in inertia-free alg and condensed linsys by @nychiang in #622
• Update IPM algorithm for the dense solver by @nychiang in #616
• Use integer preprocessor macros for version information by @tepperly in #627
• use compound vec in bicg IR by @nychiang in #621
• Use bicg ir in the quasi-Newton solver by @nychiang in #620
• Add support to MPI in C/Fortran examples by @nychiang in #633
• Refactor CUSOLVER-LU module and interface by @pelesh in #634
• Add MPI unit test for DenseEx4 by @nychiang in #644
• Add more options to control NLP scaling by @nychiang in #649
• Development of the feasibility restoration in the quasi-Newton solver by @nychiang in #647
• GPU linear solver interface by @pelesh in #650

New Contributors

• @pate7 made their first contribution in #612
• @rothpc made their first contribution in #613