C:/SPA/projekt/implementace Cell/NeuralGas_SPU/NeuralGas_SPU.c File Reference

#include "NeuralGas_SPU.h"
#include <stdio.h>
#include <spu_ext.h>
#include <spu_mfcio.h>
#include <float.h>
#include <stdlib.h>
#include <time.h>
#include <math.h>

Data Structures
struct	InternalData_SPU
Functions
void	ReadInputs (InternalData_SPU *internal, void(handler(InternalData_SPU *, int)))
void	ReadAndWriteNeurons (InternalData_SPU *internal, int overlap, void(handler(InternalData_SPU *, int)))
void	FindMinMax (InternalData_SPU *internal, int elements)
void	DoIterationForInputVertex (InternalData_SPU *internal, int elements)
void	ComputeDistance (InternalData_SPU *internal, int elements)
void	SortNeurons (InternalData_SPU *internal)
void	BubbleSort (InternalData_SPU *internal, int elements)
void	UpdateNeuronsPositions (InternalData_SPU *internal, int elements)
int	computeNeuralGas_PPU (NeuralGas_InputData *input, Vertex *inputCache, int inputCacheSize, Neuron *neuronCache, int neuronCacheSize)

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Function Documentation

void BubbleSort	(	InternalData_SPU *	internal,
		int	elements
	)

Performs bubble sort on neurons in cache. Neuron distance is used to compare neurons.

Parameters:

	internal	Algorithm state information.
	Number	of neurons in cache to process.

void ComputeDistance	(	InternalData_SPU *	internal,
		int	elements
	)

Computes distance of each neuron from actual input vertex.

Parameters:

	internal	Algorithm state information.
	Number	of neurons in cache to process.

int computeNeuralGas_PPU	(	NeuralGas_InputData *	input,
		Vertex *	inputCache,
		int	inputCacheSize,
		Neuron *	neuronCache,
		int	neuronCacheSize
	)

Runs neural gas algorithm computation.

Parameters:

	input	NeuralGas_InputData structure.
	inputCache	Pointer to array that will be used as cache for input vertices.
	inputCacheSize	Input cache size. neuronCache Pointer to array that will be used as cache for neurons.
	neuronCacheSize	Neuron cache size.

void DoIterationForInputVertex	(	InternalData_SPU *	internal,
		int	elements
	)

Performs one iteration for one input vertex, so computes distance of each neuron and move their.

Parameters:

	internal	Algorithm state information.
	Number	of inputs in cache to process.

void FindMinMax	(	InternalData_SPU *	internal,
		int	elements
	)

Sets minimal and maximal values of inputs that are in cache.

Parameters:

	internal	Algorithm state information.
	Number	of inputs in cache to process.

void ReadAndWriteNeurons	(	InternalData_SPU *	internal,
		int	overlap,
		void(handler(InternalData_SPU *, int))
	)

Reads and saves neurons.

Parameters:

overlap

Specifies if batches will be overlapped.

void ReadInputs	(	InternalData_SPU *	internal,
		void(handler(InternalData_SPU *, int))
	)

Reads input vertices.

void SortNeurons

(

InternalData_SPU *

internal

)

Sorts all neurons by their distances.

Parameters:

internal

Algorithm state information.

void UpdateNeuronsPositions	(	InternalData_SPU *	internal,
		int	elements
	)

Updates positions of all neurons accoring to their position in sorted set of neurons.

Parameters:

	internal	Algorithm state information.
	Number	of neurons in cache to process.

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