fix bug in rc-fixer buffer allocation

Author: DLWoodruff

mpisppy/cylinders/reduced_costs_spoke.py

@@ -60,7 +60,8 @@ def register_send_fields(self) -> None:
         scenario_buffer_len = 0
         for s in self.opt.local_scenarios.values():
             scenario_buffer_len += len(s._mpisppy_data.nonant_indices)
-        self._scenario_rc_buffer = np.zeros(self.nonant_length)
+        self._scenario_rc_buffer = np.zeros(scenario_buffer_len)
+        self._scenario_rc_len = scenario_buffer_len  # used in an assert
 
         self.initialize_bound_fields()
         self.create_integer_variable_where()
@@ -194,6 +195,7 @@ def extract_and_store_reduced_costs(self):
                         rc[ci] = np.nan
 
         self._scenario_rc_buffer.fill(0)
+        assert self._scenario_rc_buffer.size == self._scenario_rc_len
         ci = 0 # buffer index
         for sub in self.opt.local_subproblems.values():
             for sn in sub.scen_list: