matrix_subtract.cu File Reference

Implementation of the Matrix::subtract method for GPU-accelerated matrix subtraction. More...

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

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Functions
__global__ void	matrixSubtractKernel (const double *a, const double *b, double *c, int rows, int cols)
	CUDA kernel for element-wise matrix subtraction. More...

Detailed Description

Implementation of the Matrix::subtract method for GPU-accelerated matrix subtraction.

Definition in file matrix_subtract.cu.

Function Documentation

matrixSubtractKernel()

__global__ void matrixSubtractKernel	(	const double *	a,
		const double *	b,
		double *	c,
		int	rows,
		int	cols
	)

CUDA kernel for element-wise matrix subtraction.

Parameters

a	Pointer to the first input matrix data.
b	Pointer to the second input matrix data.
c	Pointer to the output matrix data.
rows	Number of rows in the matrices.
cols	Number of columns in the matrices.

Definition at line 19 of file matrix_subtract.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 index of current element
        int index = row * cols + col;
 
        // Perform element-wise subtraction
        c[index] = a[index] - b[index];
    }
}