#include <cstddef>
#include <cstdint>

Macros
#define	VIENNALS_GPU_ABI_VERSION 3
#define	VIENNALS_GPU_ABI __attribute__((visibility("default")))

Functions
VIENNALS_GPU_ABI int	viennalsGpuAbiVersion (void)
	Returns the ABI version this library was built against.
VIENNALS_GPU_ABI const char *	viennalsGpuGetLastErrorMessage (void)
	Human-readable detail for the last failure on this thread.
VIENNALS_GPU_ABI int	viennalsGpuDiffusionSolve (int64_t n, const int64_t ptr, const int64_t col, const double val, const double rhs, double x, unsigned maxIterations, double absTolerance, unsigned outIterations)
	Diffusion solve of OxidationDiffusion, as on the CPU: BiCGSTAB preconditioned by smoothed-aggregation AMG with an ILU0 smoother on the CSR system (ptr, col, val) of n unknowns, stopping at \|\|r\|\|_2 <= absTolerance or after maxIterations. x is the initial guess on entry, the solution on exit. Returns 1 when the solve ran and gave finite values (whatever the residual), 0 when no CUDA device is usable (x untouched), -1 when it failed.
VIENNALS_GPU_ABI void *	viennalsGpuMacSetup (int64_t n, const int64_t ptr, const int64_t col, const double val, int64_t nvel, int dim, const double nullspace)
	3-D velocity-pressure solve of OxidationDeformation: set up the preconditioner for the CSR system (ptr, col, val) of n unknowns, the first nvel of them velocities; nullspace holds dim near-nullspace values per velocity unknown. Returns nullptr on failure.
VIENNALS_GPU_ABI int	viennalsGpuMacSolve (void handle, int64_t n, const int64_t ptr, const int64_t col, const double val, const double rhs, double x, unsigned maxIterations, double tolerance, unsigned outIterations, double outResidual)
	FGMRES on A x = rhs with the preconditioner of handle; A may differ from the matrix of the setup (same unknowns). x is the initial guess on entry, the solution on exit. Non-zero when the solve ran and gave finite values, whatever the residual; iterations and relative residual returned.
VIENNALS_GPU_ABI void	viennalsGpuMacFree (void *handle)
	Free a setup. Safe to call with nullptr.

Macro Definition Documentation

◆ VIENNALS_GPU_ABI

#define VIENNALS_GPU_ABI __attribute__((visibility("default")))

◆ VIENNALS_GPU_ABI_VERSION

#define VIENNALS_GPU_ABI_VERSION 3

Function Documentation

◆ viennalsGpuAbiVersion()

VIENNALS_GPU_ABI int viennalsGpuAbiVersion ( void )

Returns the ABI version this library was built against.

◆ viennalsGpuDiffusionSolve()

VIENNALS_GPU_ABI int viennalsGpuDiffusionSolve	(	int64_t	n,
		const int64_t *	ptr,
		const int64_t *	col,
		const double *	val,
		const double *	rhs,
		double *	x,
		unsigned	maxIterations,
		double	absTolerance,
		unsigned *	outIterations )

Diffusion solve of OxidationDiffusion, as on the CPU: BiCGSTAB preconditioned by smoothed-aggregation AMG with an ILU0 smoother on the CSR system (ptr, col, val) of n unknowns, stopping at ||r||_2 <= absTolerance or after maxIterations. x is the initial guess on entry, the solution on exit. Returns 1 when the solve ran and gave finite values (whatever the residual), 0 when no CUDA device is usable (x untouched), -1 when it failed.

◆ viennalsGpuGetLastErrorMessage()

VIENNALS_GPU_ABI const char * viennalsGpuGetLastErrorMessage ( void )

Human-readable detail for the last failure on this thread.

◆ viennalsGpuMacFree()

VIENNALS_GPU_ABI void viennalsGpuMacFree ( void * handle )

Free a setup. Safe to call with nullptr.

◆ viennalsGpuMacSetup()

VIENNALS_GPU_ABI void * viennalsGpuMacSetup	(	int64_t	n,
		const int64_t *	ptr,
		const int64_t *	col,
		const double *	val,
		int64_t	nvel,
		int	dim,
		const double *	nullspace )

3-D velocity-pressure solve of OxidationDeformation: set up the preconditioner for the CSR system (ptr, col, val) of n unknowns, the first nvel of them velocities; nullspace holds dim near-nullspace values per velocity unknown. Returns nullptr on failure.

◆ viennalsGpuMacSolve()

VIENNALS_GPU_ABI int viennalsGpuMacSolve	(	void *	handle,
		int64_t	n,
		const int64_t *	ptr,
		const int64_t *	col,
		const double *	val,
		const double *	rhs,
		double *	x,
		unsigned	maxIterations,
		double	tolerance,
		unsigned *	outIterations,
		double *	outResidual )

FGMRES on A x = rhs with the preconditioner of handle; A may differ from the matrix of the setup (same unknowns). x is the initial guess on entry, the solution on exit. Non-zero when the solve ran and gave finite values, whatever the residual; iterations and relative residual returned.

Macros

Functions