Error running theano.test() - ImportError: DLL loa

Question

I'm trying to get theano up and running on a Windows 10 (x64) machine.

I've installed Python from the WinPython distribution, which comes with theano already running. But after installing CUDA 8.0.44 and MingW, I constantly get the following errors when running the simple script

import theano
theano.test()

Note that I had several warnings before, that I already solved (e.g. by installing missing packages from here. But this error gives me no usable information. The really weird thing is, that the module-name is not given anywhere that theano is missing.

theano.gof.opt: ERROR: Optimization failure due to: constant_folding
theano.gof.opt: ERROR: node: DimShuffle{x,x}(TensorConstant{1.0})
theano.gof.opt: ERROR: TRACEBACK:
theano.gof.opt: ERROR: Traceback (most recent call last):
  File "C:\Programmieren\WinPython-64bit-3.5.2.2\python-3.5.2.amd64\lib\site-packages\theano\gof\opt.py", line 1772, in process_node
    replacements = lopt.transform(node)
  File "C:\Programmieren\WinPython-64bit-3.5.2.2\python-3.5.2.amd64\lib\site-packages\theano\tensor\opt.py", line 5825, in constant_folding
    no_recycling=[])
  File "C:\Programmieren\WinPython-64bit-3.5.2.2\python-3.5.2.amd64\lib\site-packages\theano\gof\op.py", line 970, in make_thunk
    no_recycling)
  File "C:\Programmieren\WinPython-64bit-3.5.2.2\python-3.5.2.amd64\lib\site-packages\theano\gof\op.py", line 879, in make_c_thunk
    output_storage=node_output_storage)
  File "C:\Programmieren\WinPython-64bit-3.5.2.2\python-3.5.2.amd64\lib\site-packages\theano\gof\cc.py", line 1200, in make_thunk
    keep_lock=keep_lock)
  File "C:\Programmieren\WinPython-64bit-3.5.2.2\python-3.5.2.amd64\lib\site-packages\theano\gof\cc.py", line 1143, in __compile__
    keep_lock=keep_lock)
  File "C:\Programmieren\WinPython-64bit-3.5.2.2\python-3.5.2.amd64\lib\site-packages\theano\gof\cc.py", line 1595, in cthunk_factory
    key=key, lnk=self, keep_lock=keep_lock)
  File "C:\Programmieren\WinPython-64bit-3.5.2.2\python-3.5.2.amd64\lib\site-packages\theano\gof\cmodule.py", line 1142, in module_from_key
    module = lnk.compile_cmodule(location)
  File "C:\Programmieren\WinPython-64bit-3.5.2.2\python-3.5.2.amd64\lib\site-packages\theano\gof\cc.py", line 1506, in compile_cmodule
    preargs=preargs)
  File "C:\Programmieren\WinPython-64bit-3.5.2.2\python-3.5.2.amd64\lib\site-packages\theano\gof\cmodule.py", line 2213, in compile_str
    return dlimport(lib_filename)
  File "C:\Programmieren\WinPython-64bit-3.5.2.2\python-3.5.2.amd64\lib\site-packages\theano\gof\cmodule.py", line 299, in dlimport
    rval = __import__(module_name, {}, {}, [module_name])
ImportError: DLL load failed: A dynamic link library (DLL) initialization routine failed.

Potentially related posts are Test Optimization failure and Installing theano on windows.

Any ideas how to resolve this or find out what dll is missing?

Answer 1

Solved this issue, by following this excellent tutorial (the only one that actually works and is up to date) for installing Deep Learning Libraries natively on a Windows machine.