hypre BoomerAMG preconditioner for the Kokkos GPU plugin (PRECONDITIONER=AMG) — host (OpenMP) and device (CUDA/HIP) paths. More...

#include "KokkosSurfaceKernels.hpp"

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Classes
class	openswmm::twoD::gpu::KokkosAmgPreconditioner
	BoomerAMG preconditioner over the Kokkos surface Newton matrix. More...

Namespaces
namespace	openswmm

namespace	openswmm::twoD

namespace	openswmm::twoD::gpu

Detailed Description

hypre BoomerAMG preconditioner for the Kokkos GPU plugin (PRECONDITIONER=AMG) — host (OpenMP) and device (CUDA/HIP) paths.

Mirrors the serial HypreAmgPreconditioner but assembles M = I − γ·J directly from the plugin's Kokkos mesh/state Views (a Kokkos kernel that runs in the active ExecSpace), and drives hypre in the matching memory location:

OpenMP backend → MemSpace is host → HYPRE_MEMORY_HOST / EXEC_HOST
CUDA/HIP backend → MemSpace is device→ HYPRE_MEMORY_DEVICE / EXEC_DEVICE so the IJ matrix/vectors and the BoomerAMG V-cycle live in the same space as the Kokkos N_Vector data, avoiding host↔device round-trips inside the linear solve. Only compiled when OPENSWMM_WITH_HYPRE is ON.

The static CSR sparsity (diagonal + up to three neighbours per row) is built once on the host from the mesh topology and mirrored to the ExecSpace; only the values are refreshed each setup.

Author: Caleb Buahin caleb.nosp@m..bua.nosp@m.hin@g.nosp@m.mail.nosp@m..com

License\n MIT License

Classes

Namespaces

Detailed Description