Add validation to block unsupported parameters in post-training SFT, …#4097
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shralex wants to merge 1 commit into
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Add validation to block unsupported parameters in post-training SFT, …#4097shralex wants to merge 1 commit into
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…RL, and DPO - SFT, RL, and DPO trainers now error out on optimizer_memory_host_offload=True since the underlying Tunix trainers do not support host offloading. - DPO and RL trainers now error out on num_vocab_tiling > 1 since they require full vocabulary projections to compute preference/policy log-probabilities, which is incompatible with vocabulary tiling. - Created unit tests for SFT, RL, and DPO validation functions to verify these restrictions.
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This validation block can be moved to pyconfig.py.
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Note that this is specific to DPO / SFT / RL, while pyconfig is generic. I'm not sure we should move it there.
SurbhiJainUSC
approved these changes
Jun 8, 2026
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…RL, and DPO
FIXES: b/520780393
Tests
Added unit tests
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