JModelica在Ubuntu 18.04上

Question

你好JModelica社区。我已经设法在CentOS上编译JModelica，但我仍然在Ubuntu 18.04上失败了。编译本身是成功的，但正在运行

from pyjmi.examples import cstr_casadi
cstr_casadi.run_demo()

失败了

---------------------------------------------------------------------------
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'

我试过降级几个包，但问题仍然存在。我在Arch Linux btw上有同样的错误。

我知道Ubuntu 18.04没有得到官方支持，但我希望有人已经找到了解决这个问题的方法。

编辑：来自make install和make casadi_interface的日志：

https://pastebin.com/ADRyE7XV

https://pastebin.com/dL4SCWdb

Answer 1

似乎你加载错误的casadi版本。你能检查输出吗？

from casadi import __version__
print(__version__)

编辑

也许这个问题与swig版本有关。

用solver_object.getOutput替换solver_object.output应该有帮助！例如

primal_opt = N.array(self.solver_object.output(casadi.NLP_SOLVER_X)) 

同

primal_opt = N.array(self.solver_object.getOutput(casadi.NLP_SOLVER_X))

也许变更集：qazxsw poi有助于概述文件和位置。

Answer 2

我正在回答我自己的问题，将其标记为已解决。解决方案来自@Vital（见原始问题的评论）。

为了让JModelica在Ubuntu 18.04或Arch Linux上工作，需要在所有受影响的Python文件中用https://trac.jmodelica.org/changeset/8074替换solver_object.output。