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'utf-8' codec problem when using multiple cores in shape_optimization.py

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Old   October 20, 2021, 06:16
Post 'utf-8' codec problem when using multiple cores in shape_optimization.py
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Andrea Michelotti
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Hello everyone,

I am using the shape_optimization.py python script to complete the Design Features tutorials but when I run the configuration file with -n 4 option:

Code:
python shape_optimization.py -n 4 -g CONTINUOUS_ADJOINT -o SLSQP -f inv_NACA0012_basic.cfg
I also tried DISCRETE_ADJOINT as used in the second tutorial but I receive the same error:

Code:
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8a in position 14: invalid start byte
The full log is:

Code:
Traceback (most recent call last):
  File "X:\Programmi\SU2\bin\shape_optimization.py", line 183, in <module>
    main()
  File "X:\Programmi\SU2\bin\shape_optimization.py", line 92, in main
    shape_optimization( options.filename    ,
  File "X:\Programmi\SU2\bin\shape_optimization.py", line 159, in shape_optimization
    SU2.opt.SLSQP(project,x0,xb,its,accu)
  File "X:\Programmi\SU2\bin\SU2\opt\scipy_tools.py", line 120, in scipy_slsqp
    outputs = fmin_slsqp( x0             = x0             ,
  File "C:\Users\andre\AppData\Local\Programs\Python\Python39\lib\site-packages\scipy\optimize\slsqp.py", line 207, in fmin_slsqp
    res = _minimize_slsqp(func, x0, args, jac=fprime, bounds=bounds,
  File "C:\Users\andre\AppData\Local\Programs\Python\Python39\lib\site-packages\scipy\optimize\slsqp.py", line 375, in _minimize_slsqp
    sf = _prepare_scalar_function(func, x, jac=jac, args=args, epsilon=eps,
  File "C:\Users\andre\AppData\Local\Programs\Python\Python39\lib\site-packages\scipy\optimize\optimize.py", line 261, in _prepare_scalar_function
    sf = ScalarFunction(fun, x0, args, grad, hess,
  File "C:\Users\andre\AppData\Local\Programs\Python\Python39\lib\site-packages\scipy\optimize\_differentiable_functions.py", line 140, in __init__
    self._update_fun()
  File "C:\Users\andre\AppData\Local\Programs\Python\Python39\lib\site-packages\scipy\optimize\_differentiable_functions.py", line 233, in _update_fun
    self._update_fun_impl()
  File "C:\Users\andre\AppData\Local\Programs\Python\Python39\lib\site-packages\scipy\optimize\_differentiable_functions.py", line 137, in update_fun
    self.f = fun_wrapped(self.x)
  File "C:\Users\andre\AppData\Local\Programs\Python\Python39\lib\site-packages\scipy\optimize\_differentiable_functions.py", line 134, in fun_wrapped
    return fun(np.copy(x), *args)
  File "X:\Programmi\SU2\bin\SU2\opt\scipy_tools.py", line 383, in obj_f
    obj_list = project.obj_f(x)
  File "X:\Programmi\SU2\bin\SU2\opt\project.py", line 237, in obj_f
    return self._eval(konfig, func,dvs)
  File "X:\Programmi\SU2\bin\SU2\opt\project.py", line 206, in _eval
    vals = design._eval(func,*args)
  File "X:\Programmi\SU2\bin\SU2\eval\design.py", line 147, in _eval
    vals = eval_func(*inputs)
  File "X:\Programmi\SU2\bin\SU2\eval\design.py", line 244, in obj_f
    func += su2func(this_obj,config,state) * sign * scale * global_factor
  File "X:\Programmi\SU2\bin\SU2\eval\functions.py", line 92, in function
    aerodynamics( config, state )
  File "X:\Programmi\SU2\bin\SU2\eval\functions.py", line 274, in aerodynamics
    info = su2run.direct(config)
  File "X:\Programmi\SU2\bin\SU2\run\direct.py", line 77, in direct
    SU2_CFD(konfig)
  File "X:\Programmi\SU2\bin\SU2\run\interface.py", line 112, in CFD
    run_command( the_Command )
  File "X:\Programmi\SU2\bin\SU2\run\interface.py", line 258, in run_command
    message = proc.stderr.read().decode()
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8a in position 14: invalid start byte
I am using the binary executable V.7.2.0 with MPI on Windows 10.

May be that the problem so I have to compile it from source?

Being a python script which automates the procedure, I can re-write it to include mpiexec -n #cores when running the DIRECT and the ADJ problem but I would like to know what I am doing wrong. For the DIRECT problem, I can use mpiexec -n #cores fine.

Thank you for any help
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