I installed theano
but when I try to use it I got this error:
WARNING (theano.configdefaults): g++ not detected! Theano will be unable to
This is the error that I experienced in my mac running jupyter notebook with a python 3.5 kernal hope this helps someone, i am sure rggir is well sorted at this stage :)
Error Using Theano backend. WARNING (theano.configdefaults): g++ not detected ! Theano will be unable to execute optimized C-implementations (for both CPU and GPU) and will default to Python implementations. Performance will be severely degraded. To remove this warning, set Theano flags cxx to an empty string.
Cause update of XCode (g++ compiler) without accepting terms and conditions, this was pointed out above thanks Emiel
Resolution:
Run the following command in centos
yum install gcc-c++
then it will work
I solved this probelm just now on Windows 10 with Anaconda3. First apply
conda install mingw
in the command line.
If one comes across this problem
CondaIOError: IO error: Missing write permissions in: C:\ProgramData\Anaconda3"
change the attribute in the safety tab of the folder in which you installed Anaconda; make sure user has write permissions to this folder.
On Windows, you need to install mingw to support g++. Usually, it is advisable to use Anaconda distribution to install Python. Theano works with Python3.4 or older versions. You can use conda install
command to install mingw.
I had this occur on OS X after I updated XCode (through the App Store). Everything worked before the update, but after the update I had to start XCode and accept the license agreement. Then everything worked again.