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fix(generator): emulate greedy in sampling parameters

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When on-device sampling is enabled, we need to emulate the greedy
behaviour using top-k=1, top-p=1, temperature=1.
This commit is contained in:
David Corvoysier 2025-05-27 09:34:19 +00:00
parent b916076c72
commit 4e8ffec8ef
1 changed files with 6 additions and 0 deletions
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6
backends/neuron/server/text_generation_server/generator.py
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@ -176,6 +176,12 @@ class Slot:
self._generation_config.top_p = request.parameters.top_p self._generation_config.top_p = request.parameters.top_p
if request.parameters.typical_p != 0: if request.parameters.typical_p != 0:
self._generation_config.typical_p = request.parameters.typical_p self._generation_config.typical_p = request.parameters.typical_p
else:
# Set the sampling parameters to emulate greedy decoding when using on-device sampling
self._generation_config.temperature = 1.0
self._generation_config.top_k = 1
self._generation_config.top_p = 1.0
self._generation_config.typical_p = 1.0
if request.parameters.repetition_penalty != 0: if request.parameters.repetition_penalty != 0:
self._generation_config.repetition_penalty = ( self._generation_config.repetition_penalty = (
request.parameters.repetition_penalty request.parameters.repetition_penalty