Carpet: Disable automatic synchronisation after restriction

Restricted grid functions have boundary conditions applied anyway (if used correctly), which involves synchronisation (if done correctly). An explicit synchronisation is thus only overhead.

1 files changed, 5 insertions, 0 deletions

diff --git a/Carpet/Carpet/src/Restrict.cc b/Carpet/Carpet/src/Restrict.cc
index a3b6b3439..6dc040c23 100644
--- a/Carpet/Carpet/src/Restrict.cc
+++ b/Carpet/Carpet/src/Restrict.cc
@@ -70,12 +70,17 @@ namespace Carpet {
     }
 
     // Synchronise
+    // TODO: Why? Restricted grid functions need to have boundary
+    // conditions applied in postrestrict anyway, so this should not
+    // be necessary.
+#if 0
     {
       static Timer timer ("RestrictSync");
       timer.start();
       SyncGroups (cctkGH, groups);
       timer.stop();
     }
+#endif
   }