first commit

vllm/v1/spec_decode/utils.py

@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+from vllm.sampling_params import SamplingParams
+
+_SAMPLING_EPS = 1e-5
+
+
+def is_spec_decode_unsupported(sampling_params: SamplingParams) -> bool:
+    """True if request is incompatible with speculative decoding"""
+    return (sampling_params.frequency_penalty != 0.0
+            or sampling_params.presence_penalty != 0.0
+            or sampling_params.repetition_penalty != 1.0
+            or sampling_params.min_p > _SAMPLING_EPS
+            or sampling_params.logprobs is not None)