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[DOC]: Update the documentation of ShardConfig for 1D, 2D, 2.5D, 3D tensor parallelism #6278

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[DOC]: Update the documentation of ShardConfig for 1D, 2D, 2.5D, 3D tensor parallelism #6278

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6 changes: 6 additions & 0 deletions colossalai/shardformer/README.md
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Expand Up @@ -83,6 +83,12 @@ Following are the description `ShardConfig`'s arguments:

- `extra_kwargs`: A dict to store extra kwargs for ShardFormer.

- - `tensor_parallel_mode`: A choice of parallel modes for tensor operations. Supported modes are:
- `'1d'`: 1D tensor parallelism
- `'2d'`: 2D tensor parallelism
- `'2.5d'`: 2.5D tensor parallelism
- `'3d'`: 3D tensor parallelism

### Write your own policy

If you have a custom model, you can also use Shardformer to parallelize it by writing your own sharding policy. More information about the sharding policy can be found in [API Design](#-api-design).
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