From 8db957ee3a8234574430d9e570e520501d8539e9 Mon Sep 17 00:00:00 2001
From: jianzheng <57654625+o2363286@users.noreply.github.com>
Date: Wed, 4 Dec 2024 16:48:22 +0800
Subject: [PATCH] =?UTF-8?q?[bugfix]=20fixed=20parameter=20=E2=80=9Cn?=
 =?UTF-8?q?=E2=80=9D=20when=20set=20parameter=20=E2=80=9Cbestof=E2=80=9D?=
 =?UTF-8?q?=20>=201=20(#10854)?=
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Signed-off-by: jianzheng <57654625+o2363286@users.noreply.github.com>
---
 vllm/sampling_params.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/vllm/sampling_params.py b/vllm/sampling_params.py
index 5c6df5aaf5446..fc77f3ca529b2 100644
--- a/vllm/sampling_params.py
+++ b/vllm/sampling_params.py
@@ -293,8 +293,9 @@ def __post_init__(self) -> None:
                 raise ValueError(
                     f"best_of must be greater than or equal to n, "
                     f"got n={self.n} and best_of={self.best_of}.")
-            self._real_n = self.n
-            self.n = self.best_of
+            if not self._real_n:
+                self._real_n = self.n
+                self.n = self.best_of
 
         if 0 < self.temperature < _MAX_TEMP:
             logger.warning(