base.c File Reference

#include "include/base.h"

Include dependency graph for base.c:

Functions
void	init_extern (int n_neighbors, int tree_depth, int num_threads, int num_nXtrain_chunks, int platform_id, int device_id, double allowed_train_mem_percent_chunk, double allowed_test_mem_percent, int splitting_type, char *kernels_source_directory, int verbosity_level, TREE_PARAMETERS *params)
void	build_bufferkdtree (FLOAT_TYPE *Xtrain, INT_TYPE nXtrain, INT_TYPE dXtrain, TREE_RECORD *tree_record, TREE_PARAMETERS *params)
void	neighbors_extern (FLOAT_TYPE *Xtest, INT_TYPE nXtest, INT_TYPE dXtest, FLOAT_TYPE *distances, INT_TYPE ndistances, INT_TYPE ddistances, INT_TYPE *indices, INT_TYPE nindices, INT_TYPE dindices, TREE_RECORD *tree_record, TREE_PARAMETERS *params)
void	extern_free_resources (TREE_RECORD *tree_record, TREE_PARAMETERS *params)
void	extern_free_query_buffers (TREE_RECORD *tree_record, TREE_PARAMETERS *params)
long	get_max_nXtest_extern (TREE_RECORD *tree_record, TREE_PARAMETERS *params)
int	extern_check_platform_device (int platform_id, int device_id)

Function Documentation

void build_bufferkdtree	(	FLOAT_TYPE *	Xtrain,
		INT_TYPE	nXtrain,
		INT_TYPE	dXtrain,
		TREE_RECORD *	tree_record,
		TREE_PARAMETERS *	params
	)

Builds a buffer k-d-tree

Parameters

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

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 extern_free_query_buffers	(	TREE_RECORD *	tree_record,
		TREE_PARAMETERS *	params
	)

Frees opencl test buffers

Parameters

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

void extern_free_resources	(	TREE_RECORD *	tree_record,
		TREE_PARAMETERS *	params
	)

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

Parameters

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

long get_max_nXtest_extern	(	TREE_RECORD *	tree_record,
		TREE_PARAMETERS *	params
	)

Returns maximum number of test queries that can be processed.

Parameters

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

Returns

Maximum number of test instances that can be processed

void init_extern	(	int	n_neighbors,
		int	tree_depth,
		int	num_threads,
		int	num_nXtrain_chunks,
		int	platform_id,
		int	device_id,
		double	allowed_train_mem_percent_chunk,
		double	allowed_test_mem_percent,
		int	splitting_type,
		char *	kernels_source_directory,
		int	verbosity_level,
		TREE_PARAMETERS *	params
	)

Initializes the *params struct with the parameters provided.

Parameters

n_neighbors	The number of nearest neighbors to be found
tree_depth	The tree depth of the tree to be built
num_threads	The number of threads that should be used
num_nXtrain_chunks	The number of chunks the training data should be split into
platform_id	The OpenCL platform that should be used
device_id	The id of the OpenCL device that should be used
allowed_train_mem_percent_chunk	The amount of memory (percentage) that the training data may occupy
allowed_test_mem_percent	The amount of memory (percentage) that the test data may occupy
splitting_type	The splitting type that can be used during the construction of the tree
*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_TYPE	nXtest,
		INT_TYPE	dXtest,
		FLOAT_TYPE *	distances,
		INT_TYPE	ndistances,
		INT_TYPE	ddistances,
		INT_TYPE *	indices,
		INT_TYPE	nindices,
		INT_TYPE	dindices,
		TREE_RECORD *	tree_record,
		TREE_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
*tree_record	Pointer to struct storing all relevant information for model
*params	Pointer to struct containing all relevant parameters