Fix loading universal checkpoint for BF16_Optimizer #5211
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PR#5104 (Remove optimizer step on initialization) breaks loading universal checkpoint for BF16_Optimizer. This is since universal checkpoint attempts to load the optimizer states into lp._hp_mapping.optim_state dictionary before they are initialized (by step). As a workaround for loading universal checkpoint, perform step and init hp params optimizer's states before loading from universal checkpoint files. Signed-off-by: Moshe Island <misland@habana.ai>
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@misland-habana, I think we have fixed the underlying issue. Can you please check if this PR is still needed? Thanks. |
@tjruwase, sorry for the late reply (vacation...). I have re-tested with your fix for the underlying issue and it is working for me. |
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PR#5104 (Remove optimizer step on initialization) breaks loading universal checkpoint for BF16_Optimizer.
This is since universal checkpoint attempts to load the optimizer states into lp._hp_mapping.optim_state dictionary before they are initialized (by step).
As a workaround for loading universal checkpoint, perform step and init hp params optimizer's states before loading from universal checkpoint files.