Coverage for pySDC/projects/Hamiltonian/hamiltonian_output.py: 100%

1from pySDC.core.hooks import Hooks 

2 

3 

4class hamiltonian_output(Hooks): 

5 def __init__(self): 

6 """ 

7 Initialization of particles output 

8 """ 

9 super(hamiltonian_output, self).__init__() 

10 self.ham_init = None 

11 

12 def pre_run(self, step, level_number): 

13 # some abbreviations 

14 L = step.levels[0] 

15 P = L.prob 

16 super(hamiltonian_output, self).pre_run(step, level_number) 

17 self.ham_init = P.eval_hamiltonian(L.u[0]) 

18 

19 def post_iteration(self, step, level_number): 

20 """ 

21 Overwrite standard post iteration hook 

22 

23 Args: 

24 step (pySDC.Step.step): the current step 

25 level_number (int): the current level number 

26 """ 

27 super(hamiltonian_output, self).post_iteration(step, level_number) 

28 

29 # some abbreviations 

30 L = step.levels[0] 

31 P = L.prob 

32 

33 L.sweep.compute_end_point() 

34 H = P.eval_hamiltonian(L.uend) 

35 

36 self.add_to_stats( 

37 process=step.status.slot, 

38 time=L.time, 

39 level=-1, 

40 iter=step.status.iter, 

41 sweep=L.status.sweep, 

42 type='hamiltonian', 

43 value=H, 

44 ) 

45 

46 self.add_to_stats( 

47 process=step.status.slot, 

48 time=L.time, 

49 level=-1, 

50 iter=step.status.iter, 

51 sweep=L.status.sweep, 

52 type='err_hamiltonian', 

53 value=abs(self.ham_init - H), 

54 ) 

55 

56 return None 

57 

58 def post_step(self, step, level_number): 

59 """ 

60 Overwrite standard post iteration hook 

61 

62 Args: 

63 step (pySDC.Step.step): the current step 

64 level_number (int): the current level number 

65 """ 

66 super(hamiltonian_output, self).post_step(step, level_number) 

67 

68 # some abbreviations 

69 L = step.levels[0] 

70 

71 self.add_to_stats( 

72 process=step.status.slot, 

73 time=L.time, 

74 level=-1, 

75 iter=step.status.iter, 

76 sweep=L.status.sweep, 

77 type='position', 

78 value=L.uend.pos, 

79 ) 

80 

81 return None