Configure Theano in Windows 8.1

1. Install CUDA Toolkit: 

　　CUDA 6.5:

　　Choose Windows 8.1 Desktop 64-bit EXE

2. Install Python and Theano related packages:

　　Install Anaconda: 

　　Choose Python 2.7 64-bit version.

3. Anaconda may not include MinGW package, install manually using Conda if nessesary:

　　Script: conda install -c https://conda.anaconda.org/anaconda mingw

4. Install Theano using PIP

　　Script: pip install theano

5. Check using test script:

import theano.tensor as Tfrom theano import functionx = T.dscalar('x')y = T.dscalar('y')z = x + yf = function([x,y],z)print f(2,3)

　　If error like 'undefined reference to `__imp__Py_TrueStruct' occured, consider: 

　　Execute:

　　　　gendef python27.dll

　　　　dlltool --as-flags=--64 -m i386:x86-64 -k --output-lib libpython27.a --input-def python27.def

　　Copy libpython27.a to Anaconda\libs

 Extra: configurarion file for Theano:

　　create .theanorc.txt file under C:\Users\UserName\

[blas]ldflags =[global] floatX = float32device = gpu# By default the compiled files were being written to my local network drive.# Since I have limited space on this drive (on a school's network),# we can change the path to compile the files on the local machine.# You will have to create the directories and modify according to where you # want to install the files. # Uncomment if you want to change the default path to your own.# base_compiledir = /local-scratch/jer/theano/[nvcc]fastmath = Trueflags = -LE:\Anaconda\libscompiler_bindir=C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\bin[gcc]cxxflags = -IE:\Anaconda\MinGW[cuda]# Set to where the cuda drivers are installed.# You might have to change this depending where your cuda driver/what version is installed.

　

Just in case you want to install Keras:

Update Theano: pip install --upgrade --no-deps git+git://github.com/Theano/Theano.git