using System;

using System.Numerics;

using System.Threading.Tasks;

public class Program

{

    public static void Main()

    {

        float[] array1 = new float[] { 1.1F, 2.0F, 3.0F, 4.0F, 5.0F };

        float[] array2 = new float[] { 6.1F, 7.0F, 8.0F };    

        float[,] final_array = new float[array1.Length, array2.Length];

        int vectorCount = array2.Length / 4;

        Vector4[] array2Vectors = new Vector4[vectorCount];

        Parallel.For(0, vectorCount, i =>

        {

            int offset = i * 4;

            array2Vectors[i] = new Vector4(array2[offset], array2[offset + 1], array2[offset + 2], array2[offset + 3]);

        });

​

        Parallel.For(0, array1.Length, i =>

        {

            Vector4 v1 = new Vector4(array1[i], array1[i], array1[i], array1[i]);

            for (int j = 0; j < array2Vectors.Length; j++)

            {

                Vector4 result = Vector4.Abs(Vector4.Subtract(v1, array2Vectors[j]));

                int offset = j * 4;

                final_array[i, offset] = result.X;

                final_array[i, offset + 1] = result.Y;

                final_array[i, offset + 2] = result.Z;

                final_array[i, offset + 3] = result.W;

            }

            for (int j = vectorCount * 4; j < array2.Length; j++)

            {

                final_array[i,j] = Math.Abs(array1[i] - array2[j]);

            }

        });

​

        for (int i = 0; i < array1.Length; i++)

        {

            for (int j = 0; j < array2.Length; j++)

            {

                Console.WriteLine(final_array[i,j]);

            }

        }

    }

}