vector_randomize.cu File Reference

Implementation of the Vector::randomize method to fill the vector with random values. More...

#include "vector.h"
#include <curand_kernel.h>
#include <cuda_runtime.h>

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Functions
__global__ void	randomizeKernel (double *data, int rows, unsigned long seed)
	CUDA kernel function that fills each element in the vector with a random value between -0.5 and 0.5. More...

Detailed Description

Implementation of the Vector::randomize method to fill the vector with random values.

Definition in file vector_randomize.cu.

Function Documentation

randomizeKernel()

__global__ void randomizeKernel	(	double *	data,
		int	rows,
		unsigned long	seed
	)

CUDA kernel function that fills each element in the vector with a random value between -0.5 and 0.5.

Parameters

data	Pointer to the vector data on the GPU.
rows	Number of elements in the vector.
seed	Seed for random number generator.

Definition at line 16 of file vector_randomize.cu.

                                                                            {
    // Calculate the global thread index
    int idx = blockIdx.x * blockDim.x + threadIdx.x;
 
    // Ensure the thread's index is within the vector bounds
    if (idx < rows) {
        // Initialize a random state for this thread
        curandState state;
        curand_init(seed, idx, 0, &state);
 
        // Generate a random value between 0 and 1, then shift it to be between -0.5 and 0.5
        double randomValue = curand_uniform(&state) - 0.5;
 
        // Assign the random value to the current vector element
        data[idx] = randomValue;
    }
}