add eval matrix

README.md

@@ -11,5 +11,22 @@ model = AutoModelWithLMHead.from_pretrained("mofawzy/gpt-2-medium-ar")
 ```
 
 
+
+### Eval:
+```
+***** eval metrics *****
+epoch                     =       20.0
+eval_loss                 =     1.7798
+eval_mem_cpu_alloc_delta  =        3MB
+eval_mem_cpu_peaked_delta =        0MB
+eval_mem_gpu_alloc_delta  =        0MB
+eval_mem_gpu_peaked_delta =     7044MB
+eval_runtime              = 0:03:03.37
+eval_samples              =        527
+eval_samples_per_second   =      2.874
+perplexity                =     5.9285
+```
+
+
 #### Notebook:
 https://colab.research.google.com/drive/1P0Raqrq0iBLNH87DyN9j0SwWg4C2HubV?usp=sharing