Hello JModelica community. I already managed to compile JModelica on CentOS, but I am still failing on Ubuntu 18.04. The compilation itself is successful, but running
from pyjmi.examples import cstr_casadi
cstr_casadi.run_demo()
fails with
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-4-33de447ae4ee> in <module>()
----> 1 cstr_casadi.run_demo()
/opt/JModelica.org/Python/pyjmi/examples/cstr_casadi.pyc in run_demo(with_plots)
179
180 # Solve the optimal control problem
--> 181 res = op.optimize(options=opt_opts)
182
183 # Extract variable profiles
/opt/JModelica.org/Python/pyjmi/casadi_interface.pyc in optimize(self, algorithm, options)
446 "algorithm.")
447 return self._exec_algorithm('pyjmi.jmi_algorithm_drivers',
--> 448 algorithm, options)
449
450 # Make solve synonymous with optimize
/opt/JModelica.org/Python/pyjmi/common/core.pyc in _exec_algorithm(self, module, algorithm, options)
166 alg = algorithm(self, options)
167 # solve optimization problem/initialize
--> 168 alg.solve()
169 # get and return result
170 return alg.get_result()
/opt/JModelica.org/Python/pyjmi/jmi_algorithm_drivers.pyc in solve(self)
351 Solve the optimization problem using ipopt solver.
352 """
--> 353 self.nlp.solve_and_write_result()
354
355 def get_result(self):
/opt/JModelica.org/Python/pyjmi/optimization/casadi_collocation.pyc in solve_and_write_result(self)
995 t0 = time.clock()
996 # todo: account for preprocessing time within solve_nlp separately?
--> 997 self.times['sol'] = self.solve_nlp()
998 self.result_file_name = self.export_result_dymola(self.result_file_name)
999 self.times['post_processing'] = time.clock() - t0 - self.times['sol'] - self.extra_update
/opt/JModelica.org/Python/pyjmi/optimization/casadi_collocation.pyc in solve_nlp(self)
610
611 # Get the result
--> 612 primal_opt = N.array(self.solver_object.output(casadi.NLP_SOLVER_X))
613 self.primal_opt = primal_opt.reshape(-1)
614 if self.order != "default":
/opt/JModelica.org/Python/casadi/casadi_core.pyc in <lambda>(self, name)
30560 for _s in [Function]:
30561 __swig_getmethods__.update(getattr(_s, '__swig_getmethods__', {}))
> 30562 __getattr__ = lambda self, name: _swig_getattr(self, NlpSolver, name)
30563 __repr__ = _swig_repr
30564
/opt/JModelica.org/Python/casadi/casadi_core.pyc in _swig_getattr(self, class_type, name)
78 if method:
79 return method(self)
---> 80 raise AttributeError("'%s' object has no attribute '%s'" % (class_type.__name__, name))
81
82
AttributeError: 'NlpSolver' object has no attribute 'output'
I tried downgrading several packages, but the problem remains. I have the same error on Arch Linux btw.
I know Ubuntu 18.04 is not officially supported, but I am hoping someone already found a solution to this problem.
EDIT:
Logs from make install and make casadi_interface:
I am answering my own question to mark it as solved. The solution comes from @Vital (see comments of original question).
In order to get JModelica working on Ubuntu 18.04 or Arch Linux solver_object.output needs to replaced by solver_object.getOutput in all affected Python files.