diff --git a/cub/cub/device/dispatch/tuning/tuning_histogram.cuh b/cub/cub/device/dispatch/tuning/tuning_histogram.cuh
index 6de73f4f801..f1e6f39f28e 100644
--- a/cub/cub/device/dispatch/tuning/tuning_histogram.cuh
+++ b/cub/cub/device/dispatch/tuning/tuning_histogram.cuh
@@ -253,22 +253,16 @@ struct sm100_tuning<0, SampleT, 4, 3, counter_size::_4, primitive_sample::yes, s
 };
 
 // same as base
-template <class SampleT>
-struct sm100_tuning<0, SampleT, 4, 3, counter_size::_4, primitive_sample::yes, sample_size::_2>
-    : sm90_tuning<SampleT, 1, 1, counter_size::_4, primitive_sample::yes, sample_size::_2>
-{};
+// template <class SampleT>
+// struct sm100_tuning<0, SampleT, 4, 3, counter_size::_4, primitive_sample::yes, sample_size::_2> {};
 
 // same as base
-template <class SampleT>
-struct sm100_tuning<0, SampleT, 4, 3, counter_size::_4, primitive_sample::yes, sample_size::_4>
-    : sm90_tuning<SampleT, 1, 1, counter_size::_4, primitive_sample::yes, sample_size::_4>
-{};
+// template <class SampleT>
+// struct sm100_tuning<0, SampleT, 4, 3, counter_size::_4, primitive_sample::yes, sample_size::_4> {};
 
 // same as base
-template <class SampleT>
-struct sm100_tuning<0, SampleT, 4, 3, counter_size::_4, primitive_sample::yes, sample_size::_8>
-    : sm90_tuning<SampleT, 1, 1, counter_size::_4, primitive_sample::yes, sample_size::_8>
-{};
+// template <class SampleT>
+// struct sm100_tuning<0, SampleT, 4, 3, counter_size::_4, primitive_sample::yes, sample_size::_8> {};
 
 template <class SampleT, class CounterT, int NumChannels, int NumActiveChannels, bool IsEven>
 struct policy_hub