Model Size Choices in Evaluation

For evaluation, the choices of model size are fixed to be ['1b', '7b', '13b', '33b', '34b', '70b'].

/evaluation/run_subset_parallel.py:

`parser.add_argument("--model-size", type=str, choices=['1b', '7b', '13b', '33b', '34b', '70b'], default="7b")`


(1) Why fix the choices?
(2) As I want to evaluate 3B model, can I just add '3b' in the list? Will this cause any problem?

