What's Changed

Release

• [release] update version (#5912) by Hongxin Liu

Misc

• [misc] support torch2.3 (#5893) by Hongxin Liu

Compatibility

• [compatibility] support torch 2.2 (#5875) by Guangyao Zhang

Chat

• Merge pull request #5901 from hpcaitech/colossalchat by YeAnbang
• Merge pull request #5850 from hpcaitech/rlhf_SimPO by YeAnbang

Shardformer

• [ShardFormer] fix qwen2 sp (#5903) by Guangyao Zhang
• [ShardFormer] Add Ulysses Sequence Parallelism support for Command-R, Qwen2 and ChatGLM (#5897) by Guangyao Zhang
• [shardformer] DeepseekMoE support (#5871) by Haze188
• [shardformer] fix the moe (#5883) by Wang Binluo
• [Shardformer] change qwen2 modeling into gradient checkpointing style (#5874) by Jianghai
• [shardformer]delete xformers (#5859) by flybird11111

Auto parallel

• [Auto Parallel]: Speed up intra-op plan generation by 44% (#5446) by Stephan Kö

Zero

• [zero] support all-gather overlap (#5898) by Hongxin Liu

Pre-commit.ci

• [pre-commit.ci] auto fixes from pre-commit.com hooks by pre-commit-ci[bot]
• [pre-commit.ci] pre-commit autoupdate (#5878) by pre-commit-ci[bot]
• [pre-commit.ci] pre-commit autoupdate (#5572) by pre-commit-ci[bot]

Feature

• [Feature] Enable PP + SP for llama (#5868) by Edenzzzz

Hotfix

• [HotFix] CI,import,requirements-test for #5838 (#5892) by Runyu Lu
• [Hotfix] Fix OPT gradient checkpointing forward by Edenzzzz
• [hotfix] fix the bug that large tensor exceed the maximum capacity of TensorBucket (#5879) by Haze188

Feat

• [Feat] Diffusion Model(PixArtAlpha/StableDiffusion3) Support (#5838) by Runyu Lu

Hoxfix

• [Hoxfix] Fix CUDA_DEVICE_MAX_CONNECTIONS for comm overlap by Edenzzzz

Quant

• [quant] fix bitsandbytes version check (#5882) by Hongxin Liu

Doc

• [doc] Update llama + sp compatibility; fix dist optim table by Edenzzzz

Moe/zero

• [MoE/ZeRO] Moe refactor with zero refactor (#5821) by Haze188

Full Changelog: https://github.com/hpcaitech/ColossalAI/compare/v0.4.1...v0.4.0