Fix package import order and rank check

theano/configdefaults.py

@@ -373,8 +373,7 @@ AddConfigVar('magma.library_path',
 
 AddConfigVar('magma.enabled',
              " If True, use magma for matrix computation."
-             " If False, disable magma"
-             " If no_check, assume present and the version between header and library match (so less compilation at context init)",
+             " If False, disable magma",
              BoolParam(False),
              in_c_key=False)
 

theano/gpuarray/linalg.py

@@ -3,8 +3,8 @@ from __future__ import absolute_import, division, print_function
 import os
 import warnings
 
-import numpy as np
 import pkg_resources
+import numpy as np
 from numpy.linalg.linalg import LinAlgError
 
 import theano
@@ -379,10 +379,10 @@ class GpuMagmaSVD(COp):
         return []
 
     def make_node(self, A):
-        if A.ndim != 2:
-            raise LinAlgError("Matrix rank error")
         ctx_name = infer_context_name(A)
         A = as_gpuarray_variable(A, ctx_name)
+        if A.ndim != 2:
+            raise LinAlgError("Matrix rank error")
         return theano.Apply(self, [A],
                             [A.type(),
                              GpuArrayType(A.dtype, broadcastable=[False],
@@ -452,10 +452,10 @@ class GpuMagmaMatrixInverse(COp):
         return []
 
     def make_node(self, x):
-        if x.ndim != 2:
-            raise LinAlgError("Matrix rank error")
         ctx_name = infer_context_name(x)
         x = as_gpuarray_variable(x, ctx_name)
+        if x.ndim != 2:
+            raise LinAlgError("Matrix rank error")
         return theano.Apply(self, [x], [x.type()])
 
     def get_params(self, node):