[RFC] Lift freqs_cis as an input of models #1882
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freqs_cis is sensitive to the sequence order. CP load balancing will shuffle the samples, so each batch will have different orders. As a result, we will have to lift these order senstive buffer to the inputs and broadcast them along the batch dimension so that PP will correctly shard freqs_cis without messing up the correctness. ghstack-source-id: 0612109 Pull-Request-resolved: #1797 [ghstack-poisoned]
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This was referenced Oct 15, 2025
freqs_cis is sensitive to the sequence order. CP load balancing will shuffle the samples, so each batch will have different orders. As a result, we will have to lift these order senstive buffer to the inputs and broadcast them along the batch dimension so that PP will correctly shard freqs_cis without messing up the correctness. Pull-Request-resolved: #1797 [ghstack-poisoned]
This was referenced Oct 16, 2025
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Stack from ghstack (oldest at bottom):
freqs_cis is sensitive to the sequence order. CP load balancing will shuffle the samples, so each batch will have different orders. As a result, we will have to lift these order senstive buffer to the inputs and broadcast them along the batch dimension so that PP will correctly shard freqs_cis without messing up the correctness.
Pull-Request-resolved: #1797