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I just pip installed theano and tried to run theano.test(). It produced a very long log of errors and I copied the first part. I also tried a couple other examples - I have seen 

"local_dot_to_dot22"

and 

 "ValueError: invalid token "Files\Enthought\Canopy\App\appdata\canopy1.5.2.2785.win-x86_64\Scripts" in ldflags_str: "-LC:\Program Files\Enthought\Canopy\App\appdata\canopy-1.5.2.2785.win-x86_64\Scripts -lmk2_core -lmk2_intel_thread -lmk2_rt"

several times.

I'm using python 2.7 (canopy), scipy 0.15.1-2 and numpy 1.9.2-1. I am very new to theano. I appreciate if you can point me to the right direction. Thanks!

EEEEEERROR (theano.gof.opt): Optimization failure due to: local_dot_to_dot22
ERROR:theano.gof.opt:Optimization failure due to: local_dot_to_dot22
ERROR (theano.gof.opt): TRACEBACK:
ERROR:theano.gof.opt:TRACEBACK:
ERROR (theano.gof.opt): Traceback (most recent call last):
File "c:\theano\theano\gof\opt.py", line 1737, in process_node
replacements = lopt.transform(node)
File "c:\theano\theano\tensor\blas.py", line 1776, in local_dot_to_dot22
return [_dot22(x.dimshuffle('x', 0), y).dimshuffle(1)]
File "c:\theano\theano\gof\op.py", line 647, in __call__
no_recycling=[])
File "c:\theano\theano\gof\op.py", line 918, in make_thunk
no_recycling)
File "c:\theano\theano\gof\op.py", line 836, in make_c_thunk
output_storage=node_output_storage)
File "c:\theano\theano\gof\cc.py", line 1175, in make_thunk
keep_lock=keep_lock)
File "c:\theano\theano\gof\cc.py", line 1113, in __compile__
keep_lock=keep_lock)
File "c:\theano\theano\gof\cc.py", line 1541, in cthunk_factory
key = self.cmodule_key()
File "c:\theano\theano\gof\cc.py", line 1257, in cmodule_key
compile_args=self.compile_args(),
File "c:\theano\theano\gof\cc.py", line 936, in compile_args
ret += x.c_compile_args()
File "c:\theano\theano\tensor\blas.py", line 652, in c_compile_args
return ldflags(libs=False, flags=True)
File "c:\theano\theano\tensor\blas.py", line 537, in ldflags
include_dir=include_dir)
File "c:\theano\theano\gof\utils.py", line 182, in rval
val = f(*args, **kwargs)
File "c:\theano\theano\tensor\blas.py", line 597, in _ldflags
% (t, ldflags_str))
ValueError: invalid token "Files\Enthought\Canopy\App\appdata\canopy-    1.5.2.2785.win-x86_64\Scripts" in ldflags_str: "-LC:\Program Files\Enthought\Canopy\App\appdata\canopy-1.5.2.2785.win-x86_64\Scripts -lmk2_core -lmk2_intel_thread -lmk2_rt"
user42361
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2 Answers2

3

The problem here is problem caused by having spaces in your path, i.e. Canopy is installed in C:\Program Files\Enthought\Canopy but the Theano scripts don't work well with the space between Program and Files. Try uninstalling Canopy and reinstall in a directory with no space in the path.

You should also follow the other instructions for installing Theano on Windows. Unfortunately it's not as simple as just pip install theano.

Daniel Renshaw
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  • Hi Daniel, it worked!!! I cannot believe this was the reason causing theano to break! I wish that I asked this question easier! Thank you very much! – user42361 Sep 08 '15 at 18:02
  • can confirm still this issue on python 3.x in 2019...4 years later and problem still isn't fixed – Hansang Jan 10 '19 at 05:35
0

In case you don't want to reinstall things, if they're heavy programs, for instance, affecting Window's registry and so, you can try symbolic links.

A symbolic link will create something similar to a shortcut to a folder, but seen as an actual folder by other applications.

So, you can do something like this:

  • Run cmd as administrator
  • User this command: mklink /D "C:\LinkToProgramFiles" "C:\Program Files"

And then, you start using "C:\LinkToProgramFiles" in your ldflags var.

Daniel Möller
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