exp4cu Namespace Reference

Classes
struct	solver_memory
	Structure containing memory needed for EXP4 algorithm. More...

Functions
__device__ void	integrate (const double t_start, const double t_end, const double pr, double *__restrict__ y, const mechanism_memory *__restrict__ mech, const solver_memory *__restrict__ solver)
	4th-order exponential integrator function w/ adaptive Kyrlov subspace approximation More...
void	createAndZero (void **ptr, size_t size)
	Convienvience method to Cuda Malloc and memset a pointer to zero. More...
void	initialize_solver (int padded, solver_memory **h_mem, solver_memory **d_mem)
	Initializes the GPU solver. More...
const char *	solver_name ()
	Returns a descriptive solver name. More...
void	solver_log ()
	Executes solver specific logging tasks. More...
void	init_solver_log ()
	Initializes solver specific items for logging. More...
size_t	required_solver_size ()
	Returns the total size (in bytes) required for memory storage for a single GPU thread Used in calculation of the maximum number of possible GPU threads to launch, this method returns the size of the solver_memory structure (per-GPU thread) More...
void	cleanup_solver (solver_memory **h_mem, solver_memory **d_mem)
	Cleans up solver memory. More...
__host__ void	check_error (int num_cond, int *codes)

Detailed Description

Include common code.

Function Documentation

check_error()

__host__ void exp4cu::check_error	(	int	num_cond,
		int *	codes
	)

Definition at line 22 of file exp4_props.cu.

cleanup_solver()

void exp4cu::cleanup_solver	(	solver_memory **	h_mem,
		solver_memory **	d_mem
	)

Cleans up solver memory.

See also

solver_memory

solver_options.cuh

Additionally closes Krylov subspace logfiles (if LOG_OUTPUT is defined)

Definition at line 200 of file exp4_init.cu.

createAndZero()

void exp4cu::createAndZero	(	void **	ptr,
		size_t	size
	)

Convienvience method to Cuda Malloc and memset a pointer to zero.

Parameters

ptr	The address of the pointer to malloc
size	The total size (in bytes) of the pointer to malloc

Definition at line 25 of file exp4_init.cu.

init_solver_log()

exp4cu::init_solver_log

(

)

Initializes solver specific items for logging.

Initializes the Krylov subspace logging files (if LOG_OUTPUT is defined)

See also

solver_options.cuh

Definition at line 142 of file exp4_init.cu.

initialize_solver()

void exp4cu::initialize_solver	(	int	padded,
		solver_memory **	h_mem,
		solver_memory **	d_mem
	)

Initializes the GPU solver.

Parameters

padded	The total (padded) number of GPU threads (IVPs) to solve
h_mem	The host solver_memory structure (to be copied to the GPU)
d_mem	The device solver_memory structure (to be operated on by the GPU)

Solves for the poles and residuals used for the Rational Approximants in the Krylov subspace methods and initializes solver_memory

Definition at line 39 of file exp4_init.cu.

integrate()

int exp4cu::integrate	(	const double	t_start,
		const double	t_end,
		const double	pr,
		double *__restrict__	y,
		const mechanism_memory *__restrict__	mech,
		const solver_memory *__restrict__	solver
	)

4th-order exponential integrator function w/ adaptive Kyrlov subspace approximation

Parameters

t_start	The initial integration time
t_end	The final integration timestep
pr	User data passed to the RHS function dydt() - commonly used for the Pressure term
y	The state vector
mech	The mechanism memory struct
solver	The solver memory struct

Returns

The result of this integration step (see enum in exp4_props.cuh) will be stored in solver->result for each thread

Definition at line 71 of file exp4.cu.

required_solver_size()

size_t exp4cu::required_solver_size

(

)

Returns the total size (in bytes) required for memory storage for a single GPU thread Used in calculation of the maximum number of possible GPU threads to launch, this method returns the size of the solver_memory structure (per-GPU thread)

See also

solver_memory

Definition at line 167 of file exp4_init.cu.

solver_log()

exp4cu::solver_log

(

)

Executes solver specific logging tasks.

Logs errors, step-sizes, and krylov subspace size (if LOG_OUTPUT is defined)

See also

solver_options.cuh

Definition at line 106 of file exp4_init.cu.

solver_name()

char * exp4cu::solver_name

(

)

Returns a descriptive solver name.

Definition at line 71 of file exp4_init.cu.