matrix_transpose.cu File Reference

Implementation of the Matrix::transpose method for GPU-accelerated matrix transposition. More...

#include "matrix.h"
#include <cuda_runtime.h>
#include <stdexcept>
#include <string>

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Functions
__global__ void	matrixTransposeKernel (const double *input, double *output, int rows, int cols)
	CUDA kernel for matrix transposition. More...

Detailed Description

Implementation of the Matrix::transpose method for GPU-accelerated matrix transposition.

Definition in file matrix_transpose.cu.

Function Documentation

matrixTransposeKernel()

__global__ void matrixTransposeKernel	(	const double *	input,
		double *	output,
		int	rows,
		int	cols
	)

CUDA kernel for matrix transposition.

Parameters

input	Pointer to the input matrix data.
output	Pointer to the output (transposed) matrix data.
rows	Number of rows in the input matrix.
cols	Number of columns in the input matrix.

Definition at line 18 of file matrix_transpose.cu.

                                                                                               {
    // Calculate global thread indices
    int row = blockIdx.y * blockDim.y + threadIdx.y;
    int col = blockIdx.x * blockDim.x + threadIdx.x;
 
    // Check if thread is within matrix bounds
    if (row < rows && col < cols) {
        // Calculate transposed index and assign value
        int transposedIdx = col * rows + row;
        int originalIdx = row * cols + col;
        output[transposedIdx] = input[originalIdx];
    }
}