# VeRL训练HCCL超时导致训练失败
当VeRL训练场景下，在训练过程中报以下错误：
```
HCCL watchdog thread terminated with exception: [Rank 24] Watchdog caught collective operation timeout: WorkHCCL(SeqNum=6711, OpType=ALLGATHER, NumelIn=128, NumelOut=4096, Timeout(ms)=600000) ran for 600901 milliseconds before timing out
```
可尝试通过训练配置文件调大参数 actor_rollout_ref.nccl_timeout 的参数值规避。