串行版本的矩阵乘法-CUDA实例-矩阵乘法

串行版本的矩阵乘法 M N P WIDTH WIDTH WIDTH WIDTH // 宿主机的双精度矩阵乘法 void MatrixMulOnHost(float* M, float* N, float* P, int Width){ for (int i = 0; i < Width; ++i) for (int j = 0; j < Width; ++j){ double sum = 0; for (int k = 0; k < Width; ++k){ double a = M[i * width + k]; double b = N[k * width + j]; sum += a * b; } P[i * Width + j] = sum; } } i k k j *