# Distributed Configure

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<font size=3>**Q: What do I do if the error `Init plugin so failed, ret = 1343225860` occurs during the HCCL distributed training?**</font>

A: HCCL fails to be initialized. The possible cause is that `rank json` is incorrect. You can use the tool in `mindspore/model_zoo/utils/hccl_tools` to generate one. Alternatively, import the environment variable `export ASCEND_SLOG_PRINT_TO_STDOUT=1` to enable the log printing function of HCCL and check the log information.

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<font size=3>**Q: How to fix the error below when running MindSpore distributed training with GPU:**</font>

```text
Loading libgpu_collective.so failed. Many reasons could cause this:
1.libgpu_collective.so is not installed.
2.nccl is not installed or found.
3.mpi is not installed or found
```

A: This message means that MindSpore failed to load library `libgpu_collective.so`. The Possible causes are:

- OpenMPI or NCCL is not installed in this environment.
- NCCL version is not updated to `v2.7.6`: MindSpore `v1.1.0` supports GPU P2P communication operator which relies on NCCL `v2.7.6`. `libgpu_collective.so` can't be loaded successfully if NCCL is not updated to this version.