Zero2: avoid graph breaks in torch.compile by using param_idx #6803
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inside reduce_independent_p_g_buckets_and_remove_grads and in reduce_ipg_grads which are being executed during the BWD hook in zero2, the model param is being stored inside params_in_ipg_bucket. torch.compile has hard time tracing parameters. By using the param's static index inside the group the same logic can be maintain with less complexity.
tjruwase
reviewed
Dec 2, 2024
assign param according to the param idx Co-authored-by: Olatunji Ruwase <olruwase@microsoft.com>
tjruwase
approved these changes
Dec 12, 2024
loadams
reviewed
Dec 16, 2024
fix index value to 'i' instead of 'group_idx'
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inside reduce_independent_p_g_buckets_and_remove_grads and in reduce_ipg_grads which are being executed during the BWD hook in zero2, the model param is being stored inside params_in_ipg_bucket. torch.compile has hard time tracing parameters.
By using the param's static index inside the group the same logic can be maintain with less complexity.