gpu_hist performance fixes (#5558)

* Remove unnecessary cuda API calls * Fix histogram memory growth
2020-04-19 12:21:13 +12:00
parent e1f22baf8c
commit d6d1035950
7 changed files with 52 additions and 109 deletions
--- a/tests/cpp/common/test_device_helpers.cu
+++ b/tests/cpp/common/test_device_helpers.cu
@@ -10,8 +10,7 @@

 TEST(SumReduce, Test) {
  thrust::device_vector<float> data(100, 1.0f);
-  dh::CubMemory temp;
-  auto sum = dh::SumReduction(&temp, data.data().get(), data.size());
+  auto sum = dh::SumReduction(data.data().get(), data.size());
  ASSERT_NEAR(sum, 100.0f, 1e-5);
 }