GPU 2: loading model...
  Loaded in 3.7s
GPU 2: running 1000 trials...
  Trial 200/1000: sep=3180, rand=9000
  Trial 400/1000: sep=6294, rand=18000
  Trial 600/1000: sep=9489, rand=27000
  Trial 800/1000: sep=12744, rand=36000
  Trial 1000/1000: sep=15915, rand=45000
GPU 2: done in 358s, sep=15915 rand=45000