diff --git a/datahandling/serial_datahandling.py b/datahandling/serial_datahandling.py
index 79221add8fe1606289eb6a5a4ebdce6ba0ba5543..95d4e6220cd13e74d5275cbe5c44f0f5b1f4fcdd 100644
--- a/datahandling/serial_datahandling.py
+++ b/datahandling/serial_datahandling.py
@@ -378,3 +378,6 @@ class SerialDataHandling(DataHandling):
     @property
     def world_rank(self):
         return 0
+
+    def save_all(self, file):
+        np.savez_compressed(file, **self.cpu_arrays)