From 97ec57fe34bed646501aa17d57b7863ec39175f8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C5=82awomir=20Siwek?= <slawomir.siwek@intel.com>
Date: Sun, 9 Oct 2022 05:39:47 +0200
Subject: [PATCH] add seed check (#46747)

---
 paddle/phi/kernels/onednn/gaussian_random_kernel.cc | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/paddle/phi/kernels/onednn/gaussian_random_kernel.cc b/paddle/phi/kernels/onednn/gaussian_random_kernel.cc
index 853cbfaa8a3..77331e5c32e 100644
--- a/paddle/phi/kernels/onednn/gaussian_random_kernel.cc
+++ b/paddle/phi/kernels/onednn/gaussian_random_kernel.cc
@@ -28,8 +28,13 @@ void GaussianRandomKernel(const Context& ctx,
                           DataType dtype,
                           DenseTensor* out) {
   std::normal_distribution<T> dist(mean, std);
-  auto engine = std::make_shared<std::mt19937_64>();
-  engine->seed(seed);
+  std::shared_ptr<std::mt19937_64> engine;
+  if (seed) {
+    engine = std::make_shared<std::mt19937_64>();
+    engine->seed(seed);
+  } else {
+    engine = ctx.GetGenerator()->GetCPUEngine();
+  }
 
   T* data = ctx.template Alloc<T>(out);
   for (int64_t i = 0; i < out->numel(); ++i) {
-- 
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