All,

I was attempting to run a case using PyFR—it’s been awhile and a few things have change—but it appears that PyFR doesn’t like my clBLAS library any more under OS X.  The pyopencl module seems to have compiled fine when I installed it, and the path to the libclBLAS.dylib file is in my DYLD_LIBRARY_PATH environment.  Unfortunately, PyFR seems to be having some issue locating it.  Is there another environment variable, or parameter that can be set somewhere to explicitly let PyFR know where it can find this library in my environment?  I’ve included the stack trace below:

(venv) [zdavis@Minerva naca0012]$ pyfr run -b opencl -p naca_0012_2d.pyfrm naca_0012_2d.ini 
Traceback (most recent call last):
  File "/Users/zdavis/Applications/PyFR/pyfr/ctypesutil.py", line 22, in load_library
    return ctypes.CDLL(lname)
  File "/usr/local/Cellar/python3/3.5.1/Frameworks/Python.framework/Versions/3.5/lib/python3.5/ctypes/__init__.py", line 347, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: dlopen(libclBLAS.dylib, 6): image not found

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/zdavis/Applications/PyFR/pyfr/scripts/pyfr", line 252, in <module>
    main()
  File "/Users/zdavis/Applications/PyFR/pyfr/scripts/pyfr", line 109, in main
    args.process(args)
  File "/Users/zdavis/Applications/PyFR/pyfr/scripts/pyfr", line 230, in process_run
    args, NativeReader(args.mesh), None, Inifile.load(args.cfg)
  File "/Users/zdavis/Applications/PyFR/pyfr/scripts/pyfr", line 208, in _process_common
    backend = get_backend(args.backend, cfg)
  File "/Users/zdavis/Applications/PyFR/pyfr/backends/__init__.py", line 12, in get_backend
    return subclass_where(BaseBackend, name=name.lower())(cfg)
  File "/Users/zdavis/Applications/PyFR/pyfr/backends/opencl/base.py", line 79, in __init__
    self._providers = [k(self) for k in kprovs]
  File "/Users/zdavis/Applications/PyFR/pyfr/backends/opencl/base.py", line 79, in <listcomp>
    self._providers = [k(self) for k in kprovs]
  File "/Users/zdavis/Applications/PyFR/pyfr/backends/opencl/clblas.py", line 65, in __init__
    self._wrappers = ClBLASWrappers()
  File "/Users/zdavis/Applications/PyFR/pyfr/backends/opencl/clblas.py", line 14, in __init__
    lib = load_library('clBLAS')
  File "/Users/zdavis/Applications/PyFR/pyfr/ctypesutil.py", line 31, in load_library
    raise OSError('Unable to load {0}'.format(name))
OSError: Unable to load clBLAS




I’m also getting an invalid character when running using the openmp backend.  Again the stack trace is provided below:

(venv) [zdavis@Minerva naca0012]$ mpirun -np 4 pyfr run -b openmp -p naca_0012_2d.pyfrm naca_0012_2d.ini 
Traceback (most recent call last):
  File "/Users/zdavis/Applications/PyFR/pyfr/scripts/pyfr", line 252, in <module>
    main()
  File "/Users/zdavis/Applications/PyFR/pyfr/scripts/pyfr", line 109, in main
    args.process(args)
  File "/Users/zdavis/Applications/PyFR/pyfr/scripts/pyfr", line 230, in process_run
    args, NativeReader(args.mesh), None, Inifile.load(args.cfg)
  File "/Users/zdavis/Applications/PyFR/pyfr/scripts/pyfr", line 214, in _process_common
    solver = get_solver(backend, rallocs, mesh, soln, cfg)
  File "/Users/zdavis/Applications/PyFR/pyfr/solvers/__init__.py", line 14, in get_solver
    return get_integrator(backend, systemcls, rallocs, mesh, initsoln, cfg)
  File "/Users/zdavis/Applications/PyFR/pyfr/integrators/__init__.py", line 43, in get_integrator
    return integrator(backend, systemcls, rallocs, mesh, initsoln, cfg)
  File "/Users/zdavis/Applications/PyFR/pyfr/integrators/std/controllers.py", line 12, in __init__
    super().__init__(*args, **kwargs)
  File "/Users/zdavis/Applications/PyFR/pyfr/integrators/std/steppers.py", line 8, in __init__
    super().__init__(*args, **kwargs)
  File "/Users/zdavis/Applications/PyFR/pyfr/integrators/std/base.py", line 12, in __init__
    super().__init__(*args, **kwargs)
  File "/Users/zdavis/Applications/PyFR/pyfr/integrators/base.py", line 57, in __init__
    self.system = systemcls(backend, rallocs, mesh, initsoln, nreg, cfg)
  File "/Users/zdavis/Applications/PyFR/pyfr/solvers/base/system.py", line 54, in __init__
    bc_inters = self._load_bc_inters(rallocs, mesh, elemap)
  File "/Users/zdavis/Applications/PyFR/pyfr/solvers/base/system.py", line 151, in _load_bc_inters
    self.cfg)
  File "/Users/zdavis/Applications/PyFR/pyfr/solvers/navstokes/inters.py", line 226, in __init__
    self._tpl_c['cpTt'], = self._eval_opts(['cpTt'])
  File "/Users/zdavis/Applications/PyFR/pyfr/solvers/baseadvec/inters.py", line 98, in _eval_opts
    return [npeval(cfg.getexpr(sect, k), cc) for k in opts]
  File "/Users/zdavis/Applications/PyFR/pyfr/solvers/baseadvec/inters.py", line 98, in <listcomp>
    return [npeval(cfg.getexpr(sect, k), cc) for k in opts]
  File "/Users/zdavis/Applications/PyFR/pyfr/inifile.py", line 79, in getexpr
    raise ValueError('Invalid characters in _expression_')
ValueError: Invalid characters in _expression_

Is this an issue with my *.ini file?  I’ve attached it for reference…  Thanks!

Best Regards,



Zach Davis

enc

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