From 555d628e9b250868c9da003e4407087ff1982e8e Mon Sep 17 00:00:00 2001
From: Allison Piper <alliepiper16@gmail.com>
Date: Fri, 12 Apr 2024 11:55:05 -0400
Subject: [PATCH] Use a reproducible seed in test rng. (#164)

---
 testing/stdrel_criterion.cu | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/testing/stdrel_criterion.cu b/testing/stdrel_criterion.cu
index 326196a..f0affea 100644
--- a/testing/stdrel_criterion.cu
+++ b/testing/stdrel_criterion.cu
@@ -41,8 +41,8 @@ void test_const()
 
 std::vector<double> generate(double mean, double rel_std_dev, int size)
 {
-  std::random_device rd;
-  std::mt19937 gen(rd());
+  static std::mt19937::result_type seed = 0;
+  std::mt19937 gen(seed++);
   std::vector<nvbench::float64_t> v(static_cast<std::size_t>(size));
   std::normal_distribution<nvbench::float64_t> dist(mean, mean * rel_std_dev);
   std::generate(v.begin(), v.end(), [&]{ return dist(gen); });