$h_x$

$E_{\infty }\left(h_x,h_t\right)$

order

CPU

1/10

4.709e−03

*

0.011931s

1/20

1.181e−03

1.996

0.021067s

1/40

2.960e−04

1.996

0.190190s

1/80

7.400e−05

2.000

0.800413s

1/160

1.845e−05

2.000

5.759234s