add max parallel to hyperband example

Author: TheEimer

examples/configs/mlp_smac.yaml

@@ -10,6 +10,9 @@ hydra:
     n_trials: 10
     budget_variable: epochs
     sweeper_kwargs:
+      # When using Hyperband, we can use max_parallel 1
+      # In this case, every bracket will be run in parallel
+      max_parallelization: 1
       optimizer_kwargs:
         smac_facade: 
           _target_: smac.facade.multi_fidelity_facade.MultiFidelityFacade

tests/test_runs/test_smac.py

@@ -42,7 +42,7 @@ def test_smac_hyperband_termination():
             "hydra.run.dir=mlp_smac_hyperband",
             "hydra.sweep.dir=mlp_smac_hyperband",
             "hydra.sweeper.n_trials=20",
-            "+hydra.sweeper.sweeper_kwargs.max_parallelization=1",
+            "hydra.sweeper.sweeper_kwargs.max_parallelization=1",
         ]
     ).decode("utf-8")
     assert Path("mlp_smac_hyperband").exists(), "Run directory not created"
@@ -81,7 +81,7 @@ def test_smac_hyperband_optimizer_termination():
             "hydra.run.dir=mlp_smac_hyperband",
             "hydra.sweep.dir=mlp_smac_hyperband",
             "hydra.sweeper.n_trials=24",
-            "+hydra.sweeper.sweeper_kwargs.max_parallelization=1",
+            "hydra.sweeper.sweeper_kwargs.max_parallelization=1",
         ]
     ).decode("utf-8")
     assert Path("mlp_smac_hyperband").exists(), "Run directory not created"