it only ran 8 combinations each time, and then no code was running. But nni didn’t stop

[CCJing14]

Describe the issue:
I ran it with the settings below, but it only ran 8 combinations each time, and then no code was running. But nni didn’t stop

Environment:

• NNI version: 3.0
• Training service (local|remote|pai|aml|etc): remote
• Client OS: mac
• Server OS (for remote mode only): linux
• Python version: 3.8
• PyTorch/TensorFlow version: 1.13
• Is conda/virtualenv/venv used?: conda

Configuration:

• Experiment config (remember to remove secrets!):
  experimentName: sgd
  searchSpaceFile: search_space.json
  trialGpuNumber: 1
  trialConcurrency: 8
  max_trial_number: 10000
  tuner:
  name: TPE
  classArgs:
  optimize_mode: maximize
  trainingService:
  platform: local
  useActiveGpu: True

• Search space:
  {
  "lr": {"_type": "uniform", "_value": [0.0001, 1.0]},
  "batch_size":{"_type":"choice","_value": [8, 16, 32, 64, 128]}
  }

How to reproduce it?:Why and How to deal with it?