give a warning if we use a numpy version that have a memory leak and that we…

theano/sandbox/rng_mrg.py

@@ -131,6 +131,7 @@ class mrg_uniform_base(Op):
         self.inplace=inplace
         if inplace:
             self.destroy_map = {0:[0]}
+        self.warned_numpy_version = False
 
     def __eq__(self, other):
         return type(self) == type(other) \
@@ -161,6 +162,11 @@ class mrg_uniform(mrg_uniform_base):
         return op(rstate, cast(v_size, 'int32'))
 
     def perform(self, node, (rstate, size), (o_rstate, o_sample)):
+        numpy_version=numpy.__version__.split('.')
+        if not self.warned_numpy_version and int(numpy_version[0])<=1 and int(numpy_version[1])<3:
+            print "Warning: you must use numpy version 1.3.0 or higher with the python version of this op. Otherwise numpy leak memory. and numpy"
+            self.warned_numpy_version = True
+
         n_elements = 1
 
         rstate = numpy.asarray(rstate) # bring state from GPU if necessary