nouiz/Theano — comment on commit 9501ca2816b33db14d53cc3caa5f74216fae090b
File: doc/cifarSC2011/extending_theano.txt line 66
By pascanur:

Also there are 2 mandatory/higly recommended functions to implement. They are needed in order to merge duplicate computations involving your op. So if you don't want Theano to execute your op multiple times with the same inputs, do implement them. Those functions are ...