warning for locks with mpi disabled

CobayaSampler · Feb 14, 2022 · 9471699 · 9471699
1 parent 1fdbb58
commit 9471699
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/cobaya/output.py b/cobaya/output.py
@@ -89,6 +89,11 @@ def lock_error(self):
                     pass
             except OSError:
                 pass
+        if mpi.is_disabled():
+            raise LoggedError(self.log,
+                              "File %s is locked by another process, you are running "
+                              "with MPI disabled but may have more than one process. "
+                              "Note that --test should not be used with MPI.")
         if mpi.get_mpi():
             import mpi4py
         else: