How to set up theano config

Question

I'm new to Theano. Trying to set up a config file.

First of all, I notice that I have no .theanorc file:

1. locate .theanorc - returns nothing
2. echo $THEANORC - returns nothing
3. theano.test() - passes ok

I'm guessing some default configuration was created wen i installed theano. Where is it?

Answer 1

Theano does not create any configuration file by itself, but has default values for all its configuration flags. You only need such a file if you want to modify the default values.

This can be done by creating a .theanorc file in your home directory. For example, if you want floatX to be always float32, you can do this:

echo -e "\n[global]\nfloatX=float32\n" >> ~/.theanorc 

under Linux and Mac. Under windows, this can also be done. See this page for more details:

http://deeplearning.net/software/theano/library/config.html

Answer 2

In Linux in terminal Home directory write:

nano .theanorc 

In the file copy the following lines

[global] floatX = float32 device = gpu0  [lib] cnmem = 1    

Save it.

When I import theano in python I was having cnmem memory problems. Seems that is because the monitor is connected to the gpu. To resolve it change cnmem to 0.8. This number below 1 is the percentage of gpu reserved for theano