>> cgmE

cond_of_A =

  989.2690


 n = 1600 

>> cgm2

 Example 1: matrix A from solving Laplaces equation 

n =

        4900


cgm_time =

    3.0345


LU_time =

    0.7588


cgm_error =

   4.7745e-15


LU_error =

   7.5504e-15


 Example 2: random sparse SPD matrix 

n =

        5000


cgm_time =

    0.0691


LU_time =

    0.8018


cgm_error =

   1.4880e-14


LU_error =

   1.2770e-14

>> cgm2

 Example 1: matrix A from solving Laplaces equation 

n =

        4900


cgm_time =

    0.0180


LU_time =

    0.0085


cgm_error =

   3.7751e-15


LU_error =

   6.5509e-14


 Example 2: random sparse SPD matrix 

n =

        5000


cgm_time =

    0.0698


LU_time =

    0.8036


cgm_error =

   1.9652e-14


LU_error =

   1.0437e-14

>> 
>> 
>>