add better tips

theano/compile/profilemode.py

@@ -702,10 +702,12 @@ Test them first, as they are not guaranteed to always provide a speedup.""")
             node = a[1]
             if (isinstance(node.op, pool.Pool)):
                 if not cuda.dnn.dnn_available():
-                    print('Need CuDNN for pooling')
+                    print("Install CuDNN to do pooling faster"
+                            "this allows the operation to run on GPU")
             if (isinstance(node.op, LogSoftmax)):
                 if not cuda.dnn.dnn_available():
-                    print('Need CuDNN for LogSoftmax')
+                    print("Install CuDNN to do LogSoftmax faster"
+                            "this allows the operation to run on GPU")
 
         if not printed_tip:
             print("  Sorry, no tip for today.")