The experiment with the most opportunistic hours on OSG between April 1, 2017 and June 1, 2017 was NOvA with 3,158,273 hours.
best1706
The most efficient big non-production user on GPGrid who used more than 100,000 hours for successful jobs since April 1, 2017 is Jacob Todd with 98.3% efficiency.
The most efficient experiments on GPGrid that used more than 100,000 hours since April 1, 2017 were MARS (94%) and MINOS (93%).