The goal of the workshop is to bring together experts from academia, industry, and government agencies to discuss and identify visionary research opportunities and challenges for machine learning hardware breakthroughs towards green AI and ubiquitous machine learning powered intelligence. In addition, the workshop will provide opportunities to form collaborative research from different disciplines. This three-day workshop will be held virtually in November, 2020. It will feature (1) keynote speeches, (2) panel presentations and discussions, (3) breakout and summary sessions as well as (4) poster presentations, with the objective of bringing different research communities together, defining important research challenges and promoting machine learning hardware breakthroughs.