h

CPU time (seconds)

1/8

1.718286042191597e−004

3.294552154146086e−004

3.218

1/10

6.447839923018339e−005

1.351847113984665e−004

8.172

1/16

1.028885985859818e−005

2.068672045465237e−005

2.953

1/20

4.192815893866442e−006

8.479871033239017e−006

5.391

1/32

6.368030709968942e−007

1.296221338426021e−006

6.922

1/40

2.475231232201836e−007

5.045908672756208e−007

8.688

1/50

1.671824484961171e−007

3.420027458407504e−007

8.172

1/64

3.108106372273767e−008

6.343766826003454e−008

6.921