base.c File Reference

#include "include/base.h"
#include "include/util.h"
#include "include/cpu.h"
#include "include/gpu_opencl.h"
#include "include/global.h"

Include dependency graph for base.c:

Functions
void	init_extern (int n_neighbors, int num_threads, int platform_id, int device_id, char *kernels_source_directory, int verbosity_level, BRUTE_PARAMETERS *params)
void	fit_extern (FLOAT_TYPE *X, int nX, int dX, BRUTE_RECORD *brute_record, BRUTE_PARAMETERS *params)
void	neighbors_extern (FLOAT_TYPE *Xtest, int nXtest, int dXtest, FLOAT_TYPE *distances, int ndistances, int ddistances, int *indices, int nindices, int dindices, BRUTE_RECORD *brute_record, BRUTE_PARAMETERS *params)
void	free_resources_extern (BRUTE_RECORD *brute_record, BRUTE_PARAMETERS *params)
int	extern_check_platform_device (int platform_id, int device_id)

Function Documentation

int extern_check_platform_device	(	int	platform_id,
		int	device_id
	)

Checks if platform and device are valid

Parameters

platform_id	The OpenCL platform id to be used
device_id	The OpenCL device id to be used

void fit_extern	(	FLOAT_TYPE *	X,
		int	nX,
		int	dX,
		BRUTE_RECORD *	brute_record,
		BRUTE_PARAMETERS *	params
	)

Interface (extern): Fits the model (e.g., intializes OPenCL device etc.)

Parameters

*X	Pointer to array of type "FLOAT_TYPE" (either "float" or "double")
nX	Number of rows in *X (i.e., points/patterns)
dX	Number of columns in *X (one column per point/pattern)
*brute_record	Pointer to struct instance storing the model
*params	Pointer to struct instance storing all model parameters

void free_resources_extern	(	BRUTE_RECORD *	brute_record,
		BRUTE_PARAMETERS *	params
	)

Frees resources (e.g., on the GPU)

Parameters

*brute_record	Pointer to struct storing all relevant information for model
*params	Pointer to struct containing all relevant parameters

void init_extern	(	int	n_neighbors,
		int	num_threads,
		int	platform_id,
		int	device_id,
		char *	kernels_source_directory,
		int	verbosity_level,
		BRUTE_PARAMETERS *	params
	)

Initializes the *params struct with the parameters provided.

Parameters

n_neighbors	The number of nearest neighbors to be found
num_threads	The number of threads that should be used
platform_id	The OpenCL platform that should be used
device_id	The id of the OpenCL device that should be used
*kernels_source_directory	Pointer to string that contains the path to the OpenCL kernels
verbosity_level	The verbosity level (0==no output, 1==more output, 2==...)
*params	Pointer to struct that is used to store all parameters

void neighbors_extern	(	FLOAT_TYPE *	Xtest,
		int	nXtest,
		int	dXtest,
		FLOAT_TYPE *	distances,
		int	ndistances,
		int	ddistances,
		int *	indices,
		int	nindices,
		int	dindices,
		BRUTE_RECORD *	brute_record,
		BRUTE_PARAMETERS *	params
	)

Interface (extern): Computes the k nearest neighbors for a given set of test points stored in *Xtest and stores the results in two arrays *distances and *indices.

Parameters

*Xtest	Pointer to the set of query/test points (stored as FLOAT_TYPE)
nXtest	The number of query points
dXtest	The dimension of each query point
*distances	The distances array (FLOAT_TYPE) used to store the computed distances
ndistances	The number of query points
ddistances	The number of distance values for each query point
*indices	Pointer to arrray storing the indices of the k nearest neighbors for each query point
nindices	The number of query points
dindices	The number of indices comptued for each query point
*brute_record	Pointer to struct storing all relevant information for model
*params	Pointer to struct containing all relevant parameters