fix warning issue if single device

lm_eval/models/gpt2.py

@@ -71,7 +71,7 @@ class HFLM(LM):
         # multigpu support with accelerate
         if gpus > 1:
             accelerator = Accelerator(device_placement=False)
-            if gpus > self.accelerator.num_processes:
+            if gpus > accelerator.num_processes:
                 warning = ("WARNING: The number of total GPUs does not match the number of spawned processes. " 
                       "If you would like to use data parallelism, please launch the script "
                       "with 'accelerate launch *script*'. " 

main.py

@@ -57,7 +57,7 @@ def pattern_match(patterns, source_list):
     for pattern in patterns:
         for matching in fnmatch.filter(source_list, pattern):
             task_names.add(matching)
-    return list(task_names)
+    return sorted(list(task_names))
 
 
 def main():