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[BUG] MegatronMoELayerPolicy not mapped #5285

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nikit91 opened this issue Mar 15, 2024 · 0 comments

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nikit91 commented Mar 15, 2024 •

edited

Describe the bug
Not able to start inference for MoE based DS Megatron GPT model because the MegatronMoELayerPolicy (https://github.com/microsoft/DeepSpeed/blob/master/deepspeed/module_inject/containers/megatron_gpt_moe.py) that supports this feature is not being used/referenced anywhere.

To Reproduce
Steps to reproduce the behavior:

Load DS Megatron GPT MoE model
Pass it to deepspeed.init_inference
inference engine (using the BaseContainer instead of BaseMoeContainer) tries to transpose weights of MoE layer with logic written for a single MLP layer

Expected behavior
Inference engine should load without an issue

nikit91 added bug inference labels

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