Solves A x = b for a square (not necessarily symmetric) matrix-free operator A over Kokkos Views on a single process, with no MPI. A is any Mundy LinearOperator (apply(x, y)); the right-hand side and solution are the same Kokkos Views the CG path uses. This is a host-side entry point that launches device kernels; it is not device-callable, and it serves the single-large-system case rather than the on-device batched case that MundyMathBackend + CG serves.

This header is a no-op unless both the Belos and Tpetra TPLs are enabled (HAVE_MUNDYMATH_BELOS and HAVE_MUNDYMATH_TPETRA).