Updated hook name, and make the description a bit more clear

eessi/testsuite/hooks.py

@@ -283,9 +283,9 @@ def _assign_one_task_per_gpu(test: rfm.RegressionTest):
     log(f'num_tasks set to {test.num_tasks}')
 
 
-def filter_valid_test_scales(test: rfm.RegressionTest):
+def filter_supported_scales(test: rfm.RegressionTest):
     """
-    Request the test scale as feature. That we the test will not be generate for partitions that don't support this test scale.
+    Filter tests scales based on which scales are supported by each partition in the ReFrame configuration. Filtering is done using features. I.e. the current test scale is requested as a feature. Any partition that does not include this feature in the ReFrame configuration file will effectively be filtered out.
     """
     valid_systems = f'+{test.scale}'
     # test.valid_systems wasn't set yet, so set it

eessi/testsuite/tests/apps/gromacs.py

@@ -50,8 +50,8 @@ class GROMACS_EESSI(gromacs_check):
     def run_after_init(self):
         """Hooks to run after the init phase"""
 
-        # Filter invalid sizes
-        hooks.filter_valid_test_scales(self)
+        # Filter on which scales are supported by the partitions defined in the ReFrame configuration
+        hooks.filter_supported_scales(self)
 
         # Make sure that GPU tests run in partitions that support running on a GPU,
         # and that CPU-only tests run in partitions that support running CPU-only.