Controller.cs

using UnityEngine;
using System.Collections;

public class Controller : MonoBehaviour {

    public ComputeShader shader;
    // Use this for initialization
    void Start () {

        int idx = shader.FindKernel("CSMain");
        Debug.LogWarning("kernel index: " + idx);
    }

    // Update is called once per frame
    void Update () {

    }
}