LU 分解，给出采用行连续划分方式下的MPI实现并行算法-LU decomposition, using the line continuous division of the way under the implementation of MPI parallel algorithm

利用LU分解来求解方程的解,方乘的要求是中小型稠密矩阵,算法复杂度为O(n2)-calculate the solution of a equation with LU decomposition