fix AML tests (#274)

Update run_mlperf.py

Update run.py

Update requirements.txt

Update pre_processing.py

Update run.py

Update run.py

Update pre_processing.py

Fix python3 installation (#270)

Update README.md

Install frameworks first (#269)

set random seeds in the alpaca run script (#268)

Update requirements.txt

adjust alpaca and llama reference scores in tests (#267)

sample instead of greedy search in llama (#266)