From bc6463ac9778036ae02ee849c12dc2b486d5dc25 Mon Sep 17 00:00:00 2001
From: Woosuk Kwon <woosuk.kwon@berkeley.edu>
Date: Thu, 18 Sep 2025 13:49:52 -0700
Subject: [PATCH] hash

Signed-off-by: Woosuk Kwon <woosuk.kwon@berkeley.edu>
---
 vllm/v1/worker/gpu/sampler.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vllm/v1/worker/gpu/sampler.py b/vllm/v1/worker/gpu/sampler.py
index 37ddc9dbae946..d3b9e1f780925 100644
--- a/vllm/v1/worker/gpu/sampler.py
+++ b/vllm/v1/worker/gpu/sampler.py
@@ -210,7 +210,7 @@ def gumbel_sample(
     if seeds is not None:
         # Per-request seed.
         assert pos is not None
-        gumbel_seeds = seeds + pos
+        gumbel_seeds = seeds ^ (pos * 0x9E3779B9)
     else:
         # Global seed.
         assert pos is None