Blocking issues with 2 GPUs during asynchronous training

[yanghan-shanda]

Hello, I noticed that when running the examples/async_gsm8k case, the explorer becomes blocked when the GPU is set to 2 cards. (This issue does not occur with single-card or 4-card configurations.) This appears to be a `bug?

[pan-x-c]

The information provided is insufficient to locate the problem. Based on the screenshots, we can only infer that the Synchronizer is not running properly. You can restart the ray cluster to make sure the previous environment has been cleaned up. Async mode often fails to start because the previous run was not cleaned up properly