failed tests

[rajeev2010]

I just installed odespy on a ubuntu machine using anaconda. Most of the examples in the tests folder have failed. I was wondering if there is some problem with my installation. Here are some details -

$ anaconda demo_AdaptiveResidual.py
Traceback (most recent call last):
  File "demo_AdaptiveResidual.py", line 24, in <module>
    u,t = m.solve(time_points, print_info=True)
TypeError: solve() got an unexpected keyword argument 'print_info'


$ anaconda demo_basics_complex_Pi.py 
 Scalar ODE with complex value
 u' =  1./(t - 10 + 1j) 
Failed when solver is AdamsBashMoulton2
Failed when solver is AdamsBashMoulton3
... (a long list here, all failed)


$ anaconda demo_basics_exponential.py 
Scalar ODE: Exponential u = exp(-t), u' = -u
... (lot of them succeed)
Succeed when solver is RKFehlberg
Segmentation fault (core dumped)

the last one fails with same message for demo_basics_sine.py and demo_basics_van_der_pol.py.

$ anaconda demo_MyRungeKutta.py 
Traceback (most recent call last):
  File "demo_MyRungeKutta.py", line 44, in <module>
    orders += [method.get_order()]
  File "/home/rajeev/software/general/anaconda/lib/python2.7/site-packages/odespy/RungeKutta.py", line 96, in get_order
    order = [_calculate_order_1_level(table_1),
  File "/home/rajeev/software/general/anaconda/lib/python2.7/site-packages/odespy/RungeKutta.py", line 14, in _calculate_order_1_level
    u,t = test.solve([0., .1, 1.1])
  File "/home/rajeev/software/general/anaconda/lib/python2.7/site-packages/odespy/solvers.py", line 1030, in solve
    self.validate_data()
  File "/home/rajeev/software/general/anaconda/lib/python2.7/site-packages/odespy/RungeKutta.py", line 379, in validate_data
    The shape of your input array is (%d, %d).''' % (m,n)
ValueError:         The dimension of 2d-array <method_yours_array> should be:
        1. Either (n, n), --> For 1-level RungeKutta methods
        2. Or (n+1, n),   --> For 2-levels RungeKutta methods
        The shape of your input array is (3, 4).

segmentation fault for all the radau5 tests.

$ anaconda demo_RKC_1.py 
Traceback (most recent call last):
  File "demo_RKC_1.py", line 61, in <module>
    raise Exception('Reimplement this test for variable grid size and debug RKFehlberg then.')
Exception: Reimplement this test for variable grid size and debug RKFehlberg then.

[rajeev2010]

I figured out the issue with one of the tests, namely, demo_basics_complex_Pi.py

method = eval(solver)(f, atol=1e-6)

should be

method = eval(solver)(f, atol=1e-6, complex_valued=True)

all the solvers succeed now except 'AdaptiveResidual' which took very long so I killed it before ending!