deepspeedai / deepspeedai/DeepSpeed
[BUG] I can't run fp8 with pipeline parallel
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Description
Hi, I am trying to use fp8 with TransformerEngine. I am using a version of GPT-Neox repo, which uses deepspeed.
I can get fp8 to run in my MLPs with model parallel, but when I use pipeline parallel, it gets hung up with no errors, it's just frozen once it tries to train (and goes into the DeepSpeed library call).
I was wondering if anyone else ran into this issue. Thanks!
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Research direction
Reproduce the reported freeze with fp8, pipeline parallelism, TransformerEngine, and the GPT-Neox/DeepSpeed setup. Start at the DeepSpeed library call where training hangs and compare the working model-parallel path with the pipeline-parallel path. Done means identifying the cause and confirming that pipeline-parallel training proceeds without freezing.
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Assessment
- Tech stack
- python
- Domain
- distributed-systems, machine-learning
- Issue type
- Bug
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100