added check on strategy_options

Author: MiloLurati

kernel_tuner/strategies/brute_force.py

@@ -9,6 +9,8 @@
 def tune(searchspace: Searchspace, runner, tuning_options):
 
     if isinstance(runner, ParallelRunner):
+        if tuning_options.strategy_options is None:
+            tuning_options.strategy_options = {}
         tuning_options.strategy_options['check_and_retrieve'] = False
         cache_manager = CacheManager.remote(tuning_options.cache, tuning_options.cachefile)
         return runner.run(parameter_space=searchspace.sorted_list(), tuning_options=tuning_options, cache_manager=cache_manager)