Fix os path

Signed-off-by: Flavia Beo <flavia.beo@ibm.com>

Author: flaviabeo

scripts/generate_layers_metrics.py

@@ -390,7 +390,7 @@ def generate_layers_metrics(model_path, batch_size, seq_length, max_new_tokens):
                                             seq_length=seq_length, max_new_tokens=max_new_tokens, 
                                             tokenizer=tokenizer)
 
-    with open(os.join(output_path,f"{model_path}-layer-output-stack-cpu.json"), 'w') as f:
+    with open(os.path.join(output_path,f"{model_path}-layer-output-stack-cpu.json"), 'w') as f:
         json.dump(layer_stack_cpu, f)
 
     global generate_iters
@@ -403,7 +403,7 @@ def generate_layers_metrics(model_path, batch_size, seq_length, max_new_tokens):
                                              seq_length=seq_length, max_new_tokens=max_new_tokens, 
                                              tokenizer=tokenizer)
 
-    with open(os.join(output_path,f"{model_path}-layer-output-stack-gpu.json"), 'w') as f:
+    with open(os.path.join(output_path,f"{model_path}-layer-output-stack-gpu.json"), 'w') as f:
         json.dump(layer_stack_cuda, f)
 
     assert len(layer_stack_cuda.keys()) == len(layer_stack_cpu.keys())