Add vector copy to ilu preconditioner, ensuring linearity of the prec…

…onditioner when iterative solvers are used for the triangular systems.
ginkgo-project · Apr 24, 2020 · cdbbab4 · cdbbab4
1 parent be2eb46
commit cdbbab4
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/include/ginkgo/core/preconditioner/ilu.hpp b/include/ginkgo/core/preconditioner/ilu.hpp
@@ -176,9 +176,11 @@ class Ilu : public EnableLinOp<
         set_cache_to(b);
         if (!ReverseApply) {
             l_solver_->apply(b, cache_.intermediate.get());
+            x->copy_from(cache_.intermediate.get());
             u_solver_->apply(cache_.intermediate.get(), x);
         } else {
             u_solver_->apply(b, cache_.intermediate.get());
+            x->copy_from(cache_.intermediate.get());
             l_solver_->apply(cache_.intermediate.get(), x);
         }
     }