Merge pull request #30 from btalamini/optimization/eliminate_copy_in_preconditioner

Avoid superfluous copy of residual vector when applying preconditioner

Author: ralberd

optimism/SparseCholesky.py

@@ -51,7 +51,7 @@ def update(self, new_stiffness_func):
 
     def apply(self, b):
         if type(b) == type(np.array([])):
-            b = onp.array(b)
+            b = onp.array(b, copy=False)
         return self.Precond(b)