Asst. Astronomy Professor Zhaohuan Zhu, along with Professors Jim Stone of Princeton University and Kengo Tomida of Osaka University, have organized the first ever developer and user meeting for the popular and publicly available general relativistic magnetohydrodynamics (GR-MHD) code Athena++. Over 60 scientists from around the world joined the meeting, which was hosted in UNLV's new Hospitality Hall. The local organizing committee (LOC) consisted of Drs. Zhaohuan Zhu and Daniel Proga, as well as post-doc Dr. Chao-Chin Yang and UNLV alum Dr. Tim Waters (PhD 2017). It is hoped that this is the first of many successful meetings to come. Movies of state-of-the-art simulations presented at the workshop will be hosted on the meeting website.