1. Add `with profiler.profiler(...)` to the main training loop. After run, the code will generate a profile record file `/tmp/profile`.
1. Add `with profiler.profiler(...)` to the main training loop. After run, the code will generate a profile record file `/tmp/profile`.**Warning**: Please do not run too many batches when use profiler to record timeline infomation, for the profile record will grow with the batch number.
```python
```python
with profiler.profiler('All', 'total', '/tmp/profile') as prof:
with profiler.profiler('All', 'total', '/tmp/profile') as prof:
