[None][fix] propagate chat prompt token ids - #14420
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reasonsolo merged 2 commits intoMay 22, 2026
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Signed-off-by: Lizhi Zhou <1432185+reasonsolo@users.noreply.github.com>
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Signed-off-by: Lizhi Zhou <1432185+reasonsolo@users.noreply.github.com>
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Signed-off-by: Lizhi Zhou <1432185+reasonsolo@users.noreply.github.com>
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When `/v1/chat/completions` is served with the harmony adapter (gpt-oss family), the gen-worker handler unconditionally re-runs `HarmonyAdapter.openai_to_harmony_tokens` on the incoming messages, producing a second tokenization of work already done on the ctx worker. Lizhi's NVIDIA#14420 propagates `prompt_token_ids` from the ctx-worker response onto the gen-worker request, but the gen handler still ignored them in this code path. Use the propagated `prompt_token_ids` when present and fall back to the harmony adapter only for the agg path. Measured impact on RWLT (gpt-oss-120b, multi-turn coding workload): `gen_preproc_ms` p50 drops from 32.7 ms to 3.5 ms and the disagg-vs-agg TTFT gap p50 narrows from +140.7 ms to +112.4 ms. Signed-off-by: Balaram Buddharaju <169953907+brb-nv@users.noreply.github.com>
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