fail gracefully if unable to get sub KSPs

firedrakeproject · Nov 21, 2022 · f64882b · f64882b
1 parent 9ae2fc4
commit f64882b
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/firedrake/preconditioners/asm.py b/firedrake/preconditioners/asm.py
@@ -114,8 +114,11 @@ def view(self, pc, viewer=None):
 
     def update(self, pc):
         # FIXME this should be done internally by PCASM
-        for sub in self.asmpc.getASMSubKSP():
-            sub.getOperators()[0].setUnfactored()
+        try:
+            for sub in self.asmpc.getASMSubKSP():
+                sub.getOperators()[0].setUnfactored()
+        except PETSc.Error:
+            pass
         self.asmpc.setUp()
 
     def apply(self, pc, x, y):