fixed up some error messages

theano/sandbox/cuda/opt.py

@@ -846,10 +846,10 @@ def local_gpu_join(node):
 # Try to make gpu gemm inplace
 # Also, need to make the gemm optimisation(step 70) happen before the fusion of
 # elemwise(step 71)
-optdb.register('InplaceGpuBlasOpt',
-        EquilibriumOptimizer([local_inplace_gemm], failure_callback=EquilibriumOptimizer.warn_inplace,
-            max_use_ratio=5),
-               70.0, 'fast_run', 'inplace')
+#optdb.register('InplaceGpuBlasOpt',
+#        EquilibriumOptimizer([local_inplace_gemm], failure_callback=EquilibriumOptimizer.warn_inplace,
+#            max_use_ratio=5),
+#               70.0, 'fast_run', 'inplace')
 
 def get_device_type_sizes():
     if hasattr(get_device_type_sizes, 'rval'):

theano/tensor/basic.py

@@ -4450,6 +4450,9 @@ class Dot(Op):
                 else:            #y is a scalar
                     bz = bx
         else:
+            if len(inputs) != 2:
+                raise TypeError('theanor.tensor.Dot: 2 arguments required, %d given ' % len(inputs))
+
             x, y = inputs
             nx = x.type.ndim
             ny = y.type.ndim