prefer cpu over gpu in analyze_model functions
prefer cpu over gpu in analyze_model functions

we don't actually save that much by using gpu, especially considering
that we don't use gpu for training and the other times we're using it,
it's often for plotting, so it would involve a lot of copying back and
forth

billbrod/spatial-frequency-preferences,billbrod/spatial-frequency-preferences,billbrod/spatial-frequency-preferences