fix(examples): use valid instance_count for Nova serverful SMTJ SFT notebook#6046
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lucasjia-aws merged 1 commit intoJul 17, 2026
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SFTTrainer for amazon.nova-2-lite-v1 serverful SMTJ fine-tuning requires
instance_count in {4, 8, 16, 32}; the notebook used instance_count=2, which
the SDK rejects client-side at train() with "Node/Instance count '2' is not
supported. Allowed values: [4, 8, 16, 32]". Set both SFTTrainer compute
blocks to 4 (the minimum valid value).
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SFTTrainer for amazon.nova-2-lite-v1 serverful SMTJ fine-tuning requires instance_count in {4, 8, 16, 32}; the notebook used instance_count=2, which the SDK rejects client-side at train() with "Node/Instance count '2' is not supported. Allowed values: [4, 8, 16, 32]". Set both SFTTrainer compute blocks to 4 (the minimum valid value).
Description of changes:
The
sft_finetuning_serverful_smtjexample fails attrain()because itconstructs
SFTTrainerwithinstance_count=2. Foramazon.nova-2-lite-v1serverful SMTJ fine-tuning, the SDK requires
instance_countin{4, 8, 16, 32} and rejects 2 client-side:
This sets both
SFTTrainercompute blocks toinstance_count=4(the minimumvalid value). The
ModelTrainer.from_recipeblock (instance_count=1) isunaffected.
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