compiler: prevent hosted per-thread arrays are dereferenced within partree at read

Author: mloubout

devito/passes/iet/parpragma.py

@@ -317,6 +317,9 @@ def _make_parregion(self, partree, parrays):
             i = n.write
             if not (i.is_Array or i.is_TempFunction):
                 continue
+            elif partree.dim in i.dimensions:
+                # Non-local Array (full iteration space): no need to vector-expand
+                continue
             elif i in parrays:
                 pi = parrays[i]
             else:

devito/types/basic.py

@@ -989,7 +989,7 @@ def c0(self):
     def _eval_deriv(self):
         return self
 
-    @cached_property
+    @property
     def _grid_map(self):
         """
         Mapper of off-grid interpolation points indices for each dimension.