.

gen.py

@@ -29,9 +29,9 @@ suspend_on_finish = False
 solve = True
 # time_to_run = 508500
 # time_to_run = 2660000
-time_to_run = 100
+time_to_run = 60 * 10
 # allow = 5000
-ratio = 0.41
+ratio = 0.01
 # ratio = 0.9
 
 
@@ -41,7 +41,7 @@ start_date = datetime.date(2023, 9, 4)
 # start_date = datetime.date(2022, 10, 10)
 
 Rota = RotaBuilder(
-    start_date, weeks_to_rota=10, balance_offset_modifier=1, name="proc rota"
+    start_date, weeks_to_rota=26, balance_offset_modifier=1, name="proc rota"
 )
 # Rota = RotaBuilder(start_date, weeks_to_rota=20, balance_offset_modifier=1)
 Rota.constraint_options["balance_weekends"] = True

rota/shifts.py

@@ -421,7 +421,8 @@ class RotaBuilder(object):
         options={"ratio": 0.1, "seconds": 1000, "threads": 10},
         solve=True,
         debug_if_fail: bool = False,
-        export=False
+        export=False,
+        solver="cbc"
     ):
 
         self.run_start_time = datetime.datetime.now()
@@ -431,7 +432,7 @@ class RotaBuilder(object):
         self.build_model()
 
         if solve:
-            self.solve_model(options=options, debug_if_fail=debug_if_fail)
+            self.solve_model(options=options, debug_if_fail=debug_if_fail, solver=solver)
 
         self.run_end_time = datetime.datetime.now()