Introduce wrapper library

client_example/25_tensor_transforms/CMakeLists.txt

+add_executable(client_tensor_transform tensor_transform.cpp)
+add_executable(client_tensor_transform_using_wrapper tensor_transform_using_wrapper.cpp)

example/64_tensor_transforms/tensor_transform_using_wrapper.cpp → client_example/25_tensor_transforms/tensor_transform_using_wrapper.cpp

@@ -9,7 +9,7 @@
 #include "ck/utility/tuple.hpp"
 #include "ck/utility/sequence.hpp"
 
-#include "tensor_transform_wrapper.hpp"
+#include "ck/wrapper/layout.hpp"
 
 using DataType = int;
 
@@ -17,7 +17,7 @@ template <typename Layout>
 void Print1d(const Layout& layout)
 {
     std::cout << "Print1d" << std::endl;
-    for(ck::index_t w = 0; w < ck::tensor_transform_wrapper::size(layout); w++)
+    for(ck::index_t w = 0; w < ck::wrapper::size(layout); w++)
     {
         std::cout << layout(ck::make_tuple(w)) << " ";
     }
@@ -28,9 +28,9 @@ template <typename Layout>
 void Print2d(const Layout& layout)
 {
     std::cout << "Print2d" << std::endl;
-    for(ck::index_t h = 0; h < ck::tensor_transform_wrapper::size<0>(layout); h++)
+    for(ck::index_t h = 0; h < ck::wrapper::size<0>(layout); h++)
     {
-        for(ck::index_t w = 0; w < ck::tensor_transform_wrapper::size<1>(layout); w++)
+        for(ck::index_t w = 0; w < ck::wrapper::size<1>(layout); w++)
         {
             std::cout << layout(ck::make_tuple(h, w)) << " ";
         }
@@ -43,15 +43,11 @@ template <typename Layout>
 void Print3dCustom(const Layout& layout)
 {
     std::cout << "Print3dCustom" << std::endl;
-    for(ck::index_t d = 0;
-        d < ck::tensor_transform_wrapper::size<0>(ck::tensor_transform_wrapper::get<0>(layout));
-        d++)
+    for(ck::index_t d = 0; d < ck::wrapper::size<0>(ck::wrapper::get<0>(layout)); d++)
     {
-        for(ck::index_t h = 0;
-            h < ck::tensor_transform_wrapper::size<1>(ck::tensor_transform_wrapper::get<0>(layout));
-            h++)
+        for(ck::index_t h = 0; h < ck::wrapper::size<1>(ck::wrapper::get<0>(layout)); h++)
         {
-            for(ck::index_t w = 0; w < ck::tensor_transform_wrapper::size<1>(layout); w++)
+            for(ck::index_t w = 0; w < ck::wrapper::size<1>(layout); w++)
             {
                 std::cout << layout(ck::make_tuple(ck::make_tuple(d, h), w)) << " ";
             }
@@ -68,7 +64,7 @@ int main()
     // Basic descriptor 0, 1, 2, ... 30, 31 (compile-time descriptor)
     // (dims:4,8 strides:1,4)
     const auto shape_4x8       = ck::make_tuple(ck::Number<4>{}, ck::Number<8>{});
-    const auto layout_4x8_s1x4 = ck::tensor_transform_wrapper::make_layout(shape_4x8);
+    const auto layout_4x8_s1x4 = ck::wrapper::make_layout(shape_4x8);
     std::cout << "dims:4,8 strides:1,4" << std::endl;
     Print2d(layout_4x8_s1x4);
     using Cord1x1Type                = ck::Tuple<ck::Number<1>, ck::Number<1>>;
@@ -77,10 +73,9 @@ int main()
 
     // Basic descriptor 0, 1, 8, 9, 16, 17, ... 30, 31 (runtime descriptor)
     // dims:4,(2,4) strides:2,(1,8)
-    const auto shape_4x2x4    = ck::make_tuple(4, ck::make_tuple(2, 4));
-    const auto strides_s2x1x8 = ck::make_tuple(2, ck::make_tuple(1, 8));
-    const auto layout_4x2x4_s2x1x8 =
-        ck::tensor_transform_wrapper::make_layout(shape_4x2x4, strides_s2x1x8);
+    const auto shape_4x2x4         = ck::make_tuple(4, ck::make_tuple(2, 4));
+    const auto strides_s2x1x8      = ck::make_tuple(2, ck::make_tuple(1, 8));
+    const auto layout_4x2x4_s2x1x8 = ck::wrapper::make_layout(shape_4x2x4, strides_s2x1x8);
 
     std::cout << "dims:4,(2,4) strides:2,(1,8)" << std::endl;
     Print2d(layout_4x2x4_s2x1x8);
@@ -92,7 +87,7 @@ int main()
     const auto strides_s1x4x2x8 = ck::make_tuple(ck::make_tuple(ck::Number<1>{}, ck::Number<4>{}),
                                                  ck::make_tuple(ck::Number<2>{}, ck::Number<8>{}));
     static const auto layout_2x2x2x4_s1x4x2x8 =
-        ck::tensor_transform_wrapper::make_layout(shape_2x2x2x4, strides_s1x4x2x8);
+        ck::wrapper::make_layout(shape_2x2x2x4, strides_s1x4x2x8);
 
     std::cout << "dims:(2,2),(2,4) strides:(1,4),(2,8)" << std::endl;
     Print2d(layout_2x2x2x4_s1x4x2x8);
@@ -108,7 +103,7 @@ int main()
         ck::make_tuple(ck::make_tuple(ck::Number<1>{}, ck::Number<4>{}), ck::Number<2>{}),
         ck::Number<8>{});
     static const auto layout_2x2x2x4_s1x4x2x8_nested =
-        ck::tensor_transform_wrapper::make_layout(shape_2x2x2x4_nested, strides_s1x4x2x8_nested);
+        ck::wrapper::make_layout(shape_2x2x2x4_nested, strides_s1x4x2x8_nested);
 
     std::cout << "dims:((2,2),2),4 strides:((1,4),2),8" << std::endl;
     Print1d(layout_2x2x2x4_s1x4x2x8_nested);

docs/doxygen/Doxyfile

@@ -778,7 +778,9 @@ WARN_LOGFILE           =
 INPUT                  = ../../include/ck/tensor_operation/gpu/grid \
                          ../../include/ck/tensor_operation/gpu/block \
                          ../../include/ck/tensor_operation/gpu/thread \
-                         ../../library/include/ck/library/utility
+                         ../../library/include/ck/library/utility \
+                         ../../include/ck/wrapper
+
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses

docs/index.rst

@@ -34,6 +34,7 @@ Current CK library are structured into 4 layers:
 * "Templated Tile Operators" layer
 * "Templated Kernel and Invoker" layer
 * "Instantiated Kernel and Invoker" layer
+* "Wrapper for tensor tranforms operations"
 * "Client API" layer
 
 .. image:: data/ck_layer.png
@@ -50,6 +51,7 @@ The following is a list of CK documents in the suggested reading order:
 
    tutorial_hello_world
    dockerhub
+   wrapper
    Supported_Primitives_Guide
    API_Reference_Guide
    Contributors_Guide

docs/wrapper.rst

+===============
+Wrapper
+===============
+
+-------------------------------------
+Description
+-------------------------------------
+Note: Wrapper is currently under development. At the moment, its functionality 
+is limited.
+
+CK provides a lightweight wrapper for more complex operations implemented in 
+the library. It allows indexing of nested layouts using a simple interface 
+(avoiding complex descriptor transformations). 
+
+Example:
+
+.. code-block:: c
+
+    const auto shape_4x2x4         = ck::make_tuple(4, ck::make_tuple(2, 4));
+    const auto strides_s2x1x8      = ck::make_tuple(2, ck::make_tuple(1, 8));
+    const auto layout = ck::wrapper::make_layout(shape_4x2x4, strides_s2x1x8);
+
+    std::cout << "dims:4,(2,4) strides:2,(1,8)" << std::endl;
+    for(ck::index_t h = 0; h < ck::wrapper::size<0>(layout); h++)
+    {
+        for(ck::index_t w = 0; w < ck::wrapper::size<1>(layout); w++)
+        {
+            std::cout << layout(ck::make_tuple(h, w)) << " ";
+        }
+        std::cout << std::endl;
+    }
+
+Output::
+
+    dims:4,(2,4) strides:2,(1,8)
+    Print2d
+    0 1 8 9 16 17 24 25 
+    2 3 10 11 18 19 26 27 
+    4 5 12 13 20 21 28 29 
+    6 7 14 15 22 23 30 31 
+
+-------------------------------------
+Layout
+-------------------------------------
+
+.. doxygenstruct:: ck::wrapper::Layout
+
+-------------------------------------
+Layout helpers
+-------------------------------------
+
+.. doxygenfile:: layout_utils.hpp

example/64_tensor_transforms/CMakeLists.txt

-add_example_executable(example_tensor_transform tensor_transform.cpp)
-add_example_executable(example_tensor_transform_using_wrapper tensor_transform_using_wrapper.cpp)

include/ck/utility/tuple_helper.hpp

@@ -166,4 +166,16 @@ __host__ __device__ constexpr auto IsNestedTuple(const Tuple<Ts...>&)
     return (is_detected<is_tuple, Ts>::value || ...);
 }
 
+template <index_t depth = 0, typename T>
+__host__ __device__ constexpr auto TupleDepth(const T&)
+{
+    return depth;
+}
+
+template <index_t depth = 0, typename... Ts>
+__host__ __device__ constexpr auto TupleDepth(const Tuple<Ts...>&)
+{
+    return math::max(TupleDepth<depth + 1>(Ts{})...);
+}
+
 } // namespace ck

example/64_tensor_transforms/tensor_transform_wrapper.hpp → include/ck/wrapper/layout.hpp

@@ -3,27 +3,13 @@
 
 #pragma once
 
-#include "ck/ck.hpp"
-
-#include "ck/utility/number.hpp"
-#include "ck/utility/tuple.hpp"
-#include "ck/utility/tuple_helper.hpp"
-#include "ck/utility/sequence.hpp"
-#include "ck/utility/sequence_helper.hpp"
-#include "ck/utility/is_detected.hpp"
-
-#include "ck/tensor_description/tensor_descriptor.hpp"
-#include "ck/tensor_description/tensor_descriptor_helper.hpp"
-#include "ck/tensor_description/multi_index_transform_helper.hpp"
+#include "ck/wrapper/layout_utils.hpp"
 
 namespace ck {
-namespace tensor_transform_wrapper {
+namespace wrapper {
 
 /**
- * \brief Layout wrapper
- *
- * \details
- * Layout wrapper that performs the tensor descriptor logic.
+ * \brief Layout wrapper that performs the tensor descriptor logic.
  *
  * \tparam Shape Tuple of Number<> (for compile-time layout) or index_t
  *         (dynamic layout). It is possible to pass nested shapes
@@ -32,21 +18,19 @@ namespace tensor_transform_wrapper {
  *         (dynamic layout). Stride tuple should be nested if shape tuple is
  *         nested.
  */
-template <typename Shape, typename Strides = Tuple<>>
+template <typename Shape, typename Strides>
 struct Layout
 {
     private:
     static constexpr auto I0 = Number<0>{};
     static constexpr auto I1 = Number<1>{};
 
-    template <typename T>
-    using is_tuple = decltype(std::declval<T&>().IsTuple());
-
     // Generate packed (column-major) strides if not passed
     template <typename... Ts>
     __host__ __device__ constexpr static auto
-    GenerateColumnMajorPackedStrides(const Tuple<Ts...>& tuple)
+    GenerateColumnMajorPackedStrides(const Tuple<Ts...>& shape)
     {
+        const auto unrolled_shape = UnrollNestedTuple(shape);
         return generate_tuple(
             [&](auto i) {
                 if constexpr(i.value == 0)
@@ -56,10 +40,10 @@ struct Layout
                 else
                 {
                     return TupleReduce<I0.value, i.value>([](auto x, auto y) { return x * y; },
-                                                          tuple);
+                                                          unrolled_shape);
                 }
             },
-            Number<Tuple<Ts...>::Size()>{});
+            Number<decltype(unrolled_shape)::Size()>{});
     }
 
     // Generate LowerDims in Compile-time for MergeTrasform using passed Type
@@ -112,8 +96,8 @@ struct Layout
     // Example shape:   (2, (2, 2)), 2, (2, 2)
     // Unrolled shape:  2,  (2, 2),  2, (2, 2)
     template <typename... ShapeDims, typename... IdxDims>
-    __host__ __device__ constexpr static auto UnrollShapeViaIdx(const Tuple<ShapeDims...>& shape,
-                                                                const Tuple<IdxDims...>& idx)
+    __host__ __device__ constexpr static auto AlignShapeToIdx(const Tuple<ShapeDims...>& shape,
+                                                              const Tuple<IdxDims...>& idx)
     {
         if constexpr(!IsNestedTuple(Tuple<IdxDims...>{}))
         {
@@ -140,8 +124,8 @@ struct Layout
                 Number<Tuple<IdxDims...>::Size()>{});
 
             // Unroll and process next step
-            return UnrollShapeViaIdx(UnrollNestedTuple<0, 1>(unrolled_shape_via_idx),
-                                     UnrollNestedTuple<0, 1>(idx));
+            return AlignShapeToIdx(UnrollNestedTuple<0, 1>(unrolled_shape_via_idx),
+                                   UnrollNestedTuple<0, 1>(idx));
         }
     }
 
@@ -150,14 +134,11 @@ struct Layout
                                                           DescriptorToMerge& desc)
     {
         // Reverse each element in tuple
-        using ReversedUnrolledShape = decltype(TupleReverse(UnrollNestedTuple(shape)));
-        const auto merge_elems      = ReversedUnrolledShape{};
-
+        const auto merge_elems = TupleReverse(UnrollNestedTuple(shape));
         // Generate reverted indexes (column major traverse)
-        using MergeElemsSequence =
-            typename arithmetic_sequence_gen<0, ReversedUnrolledShape::Size(), 1>::type;
-        const auto lower_dims = make_tuple(MergeElemsSequence::Reverse());
-        const auto upper_dims = make_tuple(Sequence<0>{});
+        using MergeElemsSequence = typename arithmetic_sequence_gen<0, merge_elems.Size(), 1>::type;
+        const auto lower_dims    = make_tuple(MergeElemsSequence::Reverse());
+        const auto upper_dims    = make_tuple(Sequence<0>{});
         // Merge to 1d
         return transform_tensor_descriptor(
             desc, make_tuple(make_merge_transform(merge_elems)), lower_dims, upper_dims);
@@ -169,8 +150,8 @@ struct Layout
     // Example shape:    2, (2, 2), 2, (2, 2)
     // Merged shape:     2,      4, 2,      4
     template <typename... ShapeDims, typename... IdxDims, typename DescriptorToMerge>
-    __host__ __device__ constexpr static auto
-    MakeMerges(const Tuple<ShapeDims...>& shape, const Tuple<IdxDims...>&, DescriptorToMerge& desc)
+    __host__ __device__ constexpr static auto CreateMergedDescriptor(
+        const Tuple<ShapeDims...>& shape, const Tuple<IdxDims...>&, DescriptorToMerge& desc)
     {
         const auto transforms = generate_tuple(
             [&](auto i) {
@@ -224,9 +205,10 @@ struct Layout
             static_assert(Tuple<ShapeDims...>::Size() == Tuple<IdxDims...>::Size(),
                           "Idx rank and Shape rank must be the same (except 1d).");
             // Unroll while IdxDims is nested
-            const auto unrolled_shape_via_idx = UnrollShapeViaIdx(shape, idx);
+            const auto unrolled_shape_via_idx = AlignShapeToIdx(shape, idx);
             // Transform correct form of shape
-            return MakeMerges(unrolled_shape_via_idx, UnrollNestedTuple(idx), descriptor_);
+            return CreateMergedDescriptor(
+                unrolled_shape_via_idx, UnrollNestedTuple(idx), descriptor_);
         }
     }
 
@@ -234,26 +216,21 @@ struct Layout
     __host__ __device__ static auto MakeNaiveDescriptor(const LayoutShape& shape,
                                                         const LayoutStrides& strides)
     {
-        const auto unrolled_shape = UnrollNestedTuple(shape);
-
-        if constexpr(ck::is_same_v<LayoutStrides, Tuple<>>)
-        {
-            // If shape is packed
-            const auto column_major_packed_strides =
-                GenerateColumnMajorPackedStrides(unrolled_shape);
-            return make_naive_tensor_descriptor(unrolled_shape, column_major_packed_strides);
-        }
-        else
-        {
-            const auto unrolled_strides = UnrollNestedTuple(strides);
-            static_assert(unrolled_shape.Size() == unrolled_strides.Size(),
-                          "Size of strides and shape are not consistent.");
-            return make_naive_tensor_descriptor(unrolled_shape, unrolled_strides);
-        }
+        const auto unrolled_shape   = UnrollNestedTuple(shape);
+        const auto unrolled_strides = UnrollNestedTuple(strides);
+        static_assert(unrolled_shape.Size() == unrolled_strides.Size(),
+                      "Size of strides and shape are not consistent.");
+        return make_naive_tensor_descriptor(unrolled_shape, unrolled_strides);
     }
 
     public:
-    using NaiveDescriptorType = remove_cvref_t<decltype(MakeNaiveDescriptor(Shape{}, Strides{}))>;
+    // If stride not passed, deduce from GenerateColumnMajorPackedStrides
+    using DeducedStrides =
+        std::conditional_t<is_same_v<Strides, Tuple<>>,
+                           remove_cvref_t<decltype(GenerateColumnMajorPackedStrides(Shape{}))>,
+                           Strides>;
+    using NaiveDescriptorType =
+        remove_cvref_t<decltype(MakeNaiveDescriptor(Shape{}, DeducedStrides{}))>;
 
     /**
      * \brief Layout constructor.
@@ -268,9 +245,9 @@ struct Layout
         // Construct if runtime mode
         if constexpr(!NaiveDescriptorType::IsKnownAtCompileTime())
         {
-            // Keep only shape, strides are not need for transforms
             shape_      = shape;
-            descriptor_ = MakeNaiveDescriptor(shape, strides);
+            strides_    = strides;
+            descriptor_ = MakeNaiveDescriptor(shape_, strides_);
         }
     }
 
@@ -279,7 +256,8 @@ struct Layout
         if constexpr(!NaiveDescriptorType::IsKnownAtCompileTime())
         {
             shape_      = shape;
-            descriptor_ = MakeNaiveDescriptor(shape, Strides{});
+            strides_    = GenerateColumnMajorPackedStrides(shape_);
+            descriptor_ = MakeNaiveDescriptor(shape_, strides_);
         }
     }
 
@@ -338,7 +316,7 @@ struct Layout
      *
      * \return Calculated size.
      */
-    __host__ __device__ constexpr index_t GetLength() const
+    __host__ __device__ constexpr index_t GetLengths() const
     {
         const auto unrolled_shape = UnrollNestedTuple(shape_);
         return TupleReduce<I0.value, unrolled_shape.Size()>([](auto x, auto y) { return x * y; },
@@ -346,80 +324,24 @@ struct Layout
     }
 
     /**
-     * \brief Dimension getter.
+     * \brief Shape getter.
      *
-     * \tparam IDim Dimension idx.
-     * \return Calculated size.
+     * \return Shape.
      */
-    template <index_t IDim>
-    __host__ __device__ constexpr auto Get() const
-    {
-        const auto elem = shape_.At(Number<IDim>{});
-        return elem;
-    }
+    __host__ __device__ constexpr Shape GetShape() const { return shape_; }
+
+    /**
+     * \brief Strides getter.
+     *
+     * \return Strides.
+     */
+    __host__ __device__ constexpr DeducedStrides GetStrides() const { return strides_; }
 
     private:
     NaiveDescriptorType descriptor_;
     Shape shape_;
+    DeducedStrides strides_;
 };
 
-// Layout helpers
-// Length getter (product if tuple)
-template <index_t idx, typename Shape, typename Strides>
-__host__ __device__ constexpr index_t size(const Layout<Shape, Strides>& layout)
-{
-    return layout.template GetLength<idx>();
-}
-
-// Get shape size (product of dims if tuple)
-template <typename... ShapeDims>
-__host__ __device__ constexpr index_t size(const Tuple<ShapeDims...>& shape)
-{
-    using UnrolledShape = decltype(UnrollNestedTuple(shape));
-    return TupleReduce<0, UnrolledShape::Size()>([](auto x, auto y) { return x * y; },
-                                                 UnrolledShape{});
-}
-
-// Get dim size (could be returned from get function)
-template <typename T>
-__host__ __device__ T constexpr size(const T& dim)
-{
-    return dim;
-}
-
-// Get layout size (product of shapes)
-template <typename Shape, typename Strides>
-__host__ __device__ constexpr index_t size(const Layout<Shape, Strides>& layout)
-{
-    return layout.GetLength();
-}
-
-// Get shape element size
-template <index_t idx, typename... ShapeDims>
-__host__ __device__ constexpr index_t size(const Tuple<ShapeDims...>& shape)
-{
-    return size(shape.At(Number<idx>{}));
-}
-
-// Dim getter (tuple if tuple)
-template <index_t idx, typename Shape, typename Strides>
-__host__ __device__ constexpr auto get(const Layout<Shape, Strides>& layout)
-{
-    return layout.template Get<idx>();
-}
-
-template <typename Shape, typename Strides>
-__host__ __device__ constexpr Layout<Shape, Strides> make_layout(const Shape& shape,
-                                                                 const Strides& strides)
-{
-    return Layout<Shape, Strides>(shape, strides);
-}
-
-template <typename Shape>
-__host__ __device__ constexpr Layout<Shape> make_layout(const Shape& shape)
-{
-    return Layout<Shape>(shape);
-}
-
-} // namespace tensor_transform_wrapper
+} // namespace wrapper
 } // namespace ck

include/ck/wrapper/layout_utils.hpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2023, Advanced Micro Devices, Inc. All rights reserved.
+
+#pragma once
+
+#include "ck/ck.hpp"
+
+#include "ck/utility/number.hpp"
+#include "ck/utility/tuple.hpp"
+#include "ck/utility/tuple_helper.hpp"
+#include "ck/utility/sequence.hpp"
+#include "ck/utility/sequence_helper.hpp"
+#include "ck/utility/is_detected.hpp"
+
+#include "ck/tensor_description/tensor_descriptor.hpp"
+#include "ck/tensor_description/tensor_descriptor_helper.hpp"
+#include "ck/tensor_description/multi_index_transform_helper.hpp"
+
+namespace ck {
+namespace wrapper {
+
+// Disable from doxygen docs generation
+/// @cond
+// forward declaration
+template <typename Shape, typename Strides = Tuple<>>
+struct Layout;
+
+template <typename T>
+using is_tuple = decltype(std::declval<T&>().IsTuple());
+/// @endcond
+
+// make_*
+/**
+ * \brief Make layout function.
+ *
+ * \tparam Shape Shape for layout.
+ * \tparam Strides Strides for layout.
+ * \return Constructed layout.
+ */
+template <typename Shape, typename Strides>
+__host__ __device__ constexpr Layout<Shape, Strides> make_layout(const Shape& shape,
+                                                                 const Strides& strides)
+{
+    return Layout<Shape, Strides>(shape, strides);
+}
+
+/**
+ * \brief Make layout function with packed strides
+ *        (column-major).
+ *
+ * \tparam Shape Shape for layout.
+ * \return Constructed layout.
+ */
+template <typename Shape>
+__host__ __device__ constexpr Layout<Shape> make_layout(const Shape& shape)
+{
+    return Layout<Shape>(shape);
+}
+
+// Layout helpers
+// get
+/**
+ * \brief Get element from tuple (Shape/Strides/Idxs).
+ *
+ * \tparam idx Index to lookup.
+ * \param tuple Tuple to lookup.
+ * \return Requsted element.
+ */
+template <index_t idx, typename... Dims>
+__host__ __device__ constexpr auto get(const Tuple<Dims...>& tuple)
+{
+    return tuple.At(Number<idx>{});
+}
+
+/**
+ * \brief Get sub layout.
+ *
+ * \tparam idx Index to lookup.
+ * \param layout Layout to create sub layout.
+ * \return Requsted sub layout.
+ */
+template <index_t idx, typename Shape, typename Strides>
+__host__ __device__ constexpr auto get(const Layout<Shape, Strides>& layout)
+{
+    const auto new_shape = get<idx>(layout.GetShape());
+    static_assert(is_detected<is_tuple, decltype(new_shape)>::value,
+                  "Shape of sub layout must be tuple");
+    if constexpr(is_same_v<Strides, Tuple<>>)
+    {
+        // If stride not passed, create without strides
+        return make_layout(new_shape);
+    }
+    else
+    {
+        const auto new_strides = get<idx>(layout.GetStrides());
+        static_assert(is_detected<is_tuple, decltype(new_strides)>::value,
+                      "Strides of sub layout must be tuple");
+        return make_layout(new_shape, new_strides);
+    }
+}
+
+/**
+ * \brief Hierarchical get.
+ *
+ * \tparam Idxs Indexes to lookup.
+ * \param elem Element to lookup.
+ * \return Requsted element.
+ */
+template <index_t Idx, index_t... Idxs, typename T>
+__host__ __device__ constexpr auto get(const T& elem)
+{
+    return get<Idxs...>(get<Idx>(elem));
+}
+
+// size
+/**
+ * \brief Length get (product if tuple).
+ *
+ * \tparam idx Index to lookup.
+ * \param layout Layout to get Shape.
+ * \return Requsted length.
+ */
+template <index_t idx, typename Shape, typename Strides>
+__host__ __device__ constexpr index_t size(const Layout<Shape, Strides>& layout)
+{
+    return layout.template GetLength<idx>();
+}
+
+/**
+ * \brief Shape size (product of dims).
+ *
+ * \param shape Shape to lookup.
+ * \return Requsted size.
+ */
+template <typename... ShapeDims>
+__host__ __device__ constexpr index_t size(const Tuple<ShapeDims...>& shape)
+{
+    const auto unrolled_shape = UnrollNestedTuple(shape);
+    return TupleReduce<0, unrolled_shape.Size()>([](auto x, auto y) { return x * y; },
+                                                 unrolled_shape);
+}
+
+// Get dim size (could be returned from get function)
+/**
+ * \private
+ */
+template <typename T>
+__host__ __device__ T constexpr size(const T& dim)
+{
+    return dim;
+}
+
+/**
+ * \brief Layout size (product of dims).
+ *
+ * \param layout Layout to calculate shape size.
+ * \return Requsted size.
+ */
+template <typename Shape, typename Strides>
+__host__ __device__ constexpr index_t size(const Layout<Shape, Strides>& layout)
+{
+    return layout.GetLengths();
+}
+
+/**
+ * \brief Length get from tuple (product if tuple).
+ *
+ * \tparam idx Index to lookup.
+ * \param tuple Tuple to lookup.
+ * \return Requsted length.
+ */
+template <index_t idx, typename... Ts>
+__host__ __device__ constexpr index_t size(const Tuple<Ts...>& tuple)
+{
+    return size(tuple.At(Number<idx>{}));
+}
+
+/**
+ * \brief Hierarchical size.
+ *
+ * \tparam Idxs Indexes to lookup.
+ * \param elem Element to lookup.
+ * \return Requsted element.
+ */
+template <index_t... Idxs, typename T>
+__host__ __device__ constexpr auto size(const T& elem)
+{
+    return size(get<Idxs...>(elem));
+}
+
+// rank
+/**
+ * \brief Get layout rank (num elements in shape).
+ *
+ * \param layout Layout to calculate rank.
+ * \return Requsted rank.
+ */
+template <typename Shape, typename Strides>
+__host__ __device__ constexpr auto rank([[maybe_unused]] const Layout<Shape, Strides>& layout)
+{
+    return Shape::Size();
+}
+
+/**
+ * \brief Get tuple rank (num elements in tuple).
+ *        Return 1 if scalar passed.
+ *
+ * \param tuple Tuple to calculate rank.
+ * \return Requsted rank.
+ */
+template <typename... Dims>
+__host__ __device__ constexpr auto rank([[maybe_unused]] const Tuple<Dims...>& tuple)
+{
+    return Tuple<Dims...>::Size();
+}
+
+/**
+ * \private
+ */
+template <index_t IDim>
+__host__ __device__ constexpr index_t rank(const Number<IDim>&)
+{
+    return 1;
+}
+
+/**
+ * \private
+ */
+__host__ __device__ constexpr index_t rank(const index_t&) { return 1; }
+
+/**
+ * \brief Hierarchical rank.
+ *
+ * \tparam Idxs Indexes to lookup.
+ * \param elem Element to lookup.
+ * \return Requsted rank.
+ */
+template <index_t... Idxs, typename T>
+__host__ __device__ constexpr auto rank(const T& elem)
+{
+    return rank(get<Idxs...>(elem));
+}
+
+// depth
+/**
+ * \brief Get depth of the layout shape (return 0 if scalar).
+ *
+ * \param layout Layout to calculate depth.
+ * \return Requsted depth.
+ */
+template <typename Shape, typename Strides>
+__host__ __device__ constexpr auto depth(const Layout<Shape, Strides>& layout)
+{
+    return TupleDepth(layout.GetShape());
+}
+
+/**
+ * \brief Get depth of the tuple. (return 0 if scalar)
+ *
+ * \param tuple Tuple to calculate depth.
+ * \return Requsted depth.
+ */
+template <typename... Dims>
+__host__ __device__ constexpr auto depth(const Tuple<Dims...>& tuple)
+{
+    return TupleDepth(tuple);
+}
+
+/**
+ * \private
+ */
+template <index_t IDim>
+__host__ __device__ constexpr index_t depth(const Number<IDim>&)
+{
+    return 0;
+}
+
+/**
+ * \private
+ */
+__host__ __device__ constexpr index_t depth(const index_t&) { return 0; }
+
+/**
+ * \brief Hierarchical depth.
+ *
+ * \tparam Idxs Indexes to lookup.
+ * \param elem Element to lookup.
+ * \return Requsted depth.
+ */
+template <index_t... Idxs, typename T>
+__host__ __device__ constexpr auto depth(const T& elem)
+{
+    return depth(get<Idxs...>(elem));
+}
+
+/**
+ * \brief Get Layout strides.
+ *
+ * \param layout Layout to get strides.
+ * \return Requsted strides.
+ */
+template <typename Shape, typename Strides>
+__host__ __device__ constexpr auto stride(const Layout<Shape, Strides>& layout)
+{
+    return layout.GetStrides();
+}
+
+/**
+ * \brief Get Layout shape.
+ *
+ * \param layout Layout to get shape.
+ * \return Requsted shape.
+ */
+template <typename Shape, typename Strides>
+__host__ __device__ constexpr auto shape(const Layout<Shape, Strides>& layout)
+{
+    return layout.GetShape();
+}
+
+} // namespace wrapper
+} // namespace ck

test/CMakeLists.txt

@@ -149,6 +149,7 @@ add_subdirectory(batched_gemm_multi_d)
 add_subdirectory(grouped_convnd_bwd_data)
 add_subdirectory(conv_tensor_rearrange)
 add_subdirectory(transpose)
+add_subdirectory(wrapper)
 if(GPU_TARGETS MATCHES "gfx11")
     add_subdirectory(wmma_op)
 endif()

test/wrapper/CMakeLists.txt

+add_gtest_executable(test_layout test_layout.cpp)
+target_link_libraries(test_layout PRIVATE utility)

test/wrapper/test_layout.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2023, Advanced Micro Devices, Inc. All rights reserved.
+
+#include <cstdlib>
+#include <iostream>
+#include <initializer_list>
+#include <vector>
+#include <gtest/gtest.h>
+
+#include "ck/utility/common_header.hpp"
+
+#include "ck/wrapper/layout.hpp"
+
+#include "ck/tensor_description/tensor_descriptor.hpp"
+#include "ck/tensor_description/tensor_descriptor_helper.hpp"
+#include "ck/tensor_description/multi_index_transform_helper.hpp"
+
+class TestWrapperLayout : public ::testing::Test
+{
+    protected:
+    static constexpr auto I0 = ck::Number<0>{};
+    static constexpr auto I1 = ck::Number<1>{};
+
+    template <typename Desc,
+              typename Desc1d,
+              typename LayoutRuntime,
+              typename LayoutCompiletime,
+              typename Idxs>
+    void Run(Desc& desc,
+             Desc1d& desc_1d,
+             LayoutRuntime& layout_runtime,
+             LayoutCompiletime& layout_compiletime,
+             const std::vector<Idxs>& idxs)
+    {
+        // 1d check
+        EXPECT_EQ(desc_1d.GetLength(I0), ck::wrapper::size(layout_runtime));
+        // Check layout compiletime and runtime result consistency
+        EXPECT_EQ(ck::wrapper::size(layout_runtime), ck::wrapper::size(layout_compiletime));
+
+        for(ck::index_t i = 0; i < desc_1d.GetLength(I0); i++)
+        {
+            const ck::index_t layout_runtime_offset_1d     = layout_runtime(ck::make_tuple(i));
+            const ck::index_t layout_compiletime_offset_1d = layout_compiletime(ck::make_tuple(i));
+            const ck::index_t desc_offset_1d = desc_1d.CalculateOffset(ck::make_tuple(i));
+            EXPECT_EQ(layout_runtime_offset_1d, desc_offset_1d);
+            EXPECT_EQ(layout_compiletime_offset_1d, layout_runtime_offset_1d);
+        }
+        // size(layout)-d check, don't check if access is hierarchical
+        if constexpr(!IsNestedTuple(Idxs{}))
+        {
+            ck::static_for<0, Idxs::Size(), 1>{}([&](auto d) {
+                EXPECT_EQ(desc.GetLength(ck::Number<d>{}), ck::wrapper::size<d>(layout_runtime));
+                EXPECT_EQ(ck::wrapper::size<d>(layout_runtime),
+                          ck::wrapper::size<d>(layout_compiletime));
+            });
+        }
+        for(const auto idx : idxs)
+        {
+            const ck::index_t layout_runtime_offset     = layout_runtime(idx);
+            const ck::index_t layout_compiletime_offset = layout_compiletime(idx);
+            const ck::index_t desc_offset =
+                desc.CalculateOffset(UnrollNestedTuple(idx)); // Unroll if nested
+            EXPECT_EQ(layout_runtime_offset, desc_offset);
+            EXPECT_EQ(layout_runtime_offset, layout_compiletime_offset);
+        }
+    }
+};
+
+TEST_F(TestWrapperLayout, 2d)
+{
+    // dims:(4, 3) strides:(1, 4)
+    constexpr ck::index_t d1 = 4;
+    constexpr ck::index_t d0 = 3;
+    constexpr ck::index_t s1 = 1;
+    constexpr ck::index_t s0 = 4;
+    const auto desc =
+        ck::make_naive_tensor_descriptor(ck::make_tuple(ck::Number<d1>{}, ck::Number<d0>{}),
+                                         ck::make_tuple(ck::Number<s1>{}, ck::Number<s0>{}));
+    // Reverse due to column major
+    const auto desc_1d = transform_tensor_descriptor(
+        desc,
+        ck::make_tuple(ck::make_merge_transform(ck::make_tuple(d0, d1))),
+        ck::make_tuple(ck::Sequence<1, 0>{}),
+        ck::make_tuple(ck::Sequence<0>{}));
+    const auto layout_runtime = ck::wrapper::make_layout(ck::make_tuple(d1, d0));
+    const auto layout_compiletime =
+        ck::wrapper::make_layout(ck::make_tuple(ck::Number<d1>{}, ck::Number<d0>{}));
+    std::vector<ck::Tuple<ck::index_t, ck::index_t>> idxs;
+
+    for(ck::index_t h = 0; h < d1; h++)
+    {
+        for(ck::index_t w = 0; w < d0; w++)
+        {
+            idxs.emplace_back(h, w);
+        }
+    }
+
+    this->Run(desc, desc_1d, layout_runtime, layout_compiletime, idxs);
+}
+
+TEST_F(TestWrapperLayout, 3d_nested)
+{
+    // dims:((2, 3), 4, 3) strides:((2, 4), 12, 48)
+    constexpr ck::index_t d3 = 2;
+    constexpr ck::index_t d2 = 3;
+    constexpr ck::index_t d1 = 4;
+    constexpr ck::index_t d0 = 3;
+    constexpr ck::index_t s3 = 2;
+    constexpr ck::index_t s2 = 4;
+    constexpr ck::index_t s1 = 12;
+    constexpr ck::index_t s0 = 48;
+    const auto desc          = ck::make_naive_tensor_descriptor(
+        ck::make_tuple(ck::Number<d3>{}, ck::Number<d2>{}, ck::Number<d1>{}, ck::Number<d0>{}),
+        ck::make_tuple(ck::Number<s3>{}, ck::Number<s2>{}, ck::Number<s1>{}, ck::Number<s0>{}));
+    // Reverse due to column major
+    const auto desc_1d = transform_tensor_descriptor(
+        desc,
+        ck::make_tuple(ck::make_merge_transform(ck::make_tuple(d0, d1, d2, d3))),
+        ck::make_tuple(ck::Sequence<3, 2, 1, 0>{}),
+        ck::make_tuple(ck::Sequence<0>{}));
+    const auto desc_3d = transform_tensor_descriptor(
+        desc,
+        ck::make_tuple(ck::make_merge_transform(ck::make_tuple(d2, d3)),
+                       ck::make_pass_through_transform(d1),
+                       ck::make_pass_through_transform(d2)),
+        ck::make_tuple(ck::Sequence<1, 0>{}, ck::Sequence<2>{}, ck::Sequence<3>{}),
+        ck::make_tuple(ck::Sequence<0>{}, ck::Sequence<1>{}, ck::Sequence<2>{}));
+    const auto layout_runtime =
+        ck::wrapper::make_layout(ck::make_tuple(ck::make_tuple(d3, d2), d1, d0),
+                                 ck::make_tuple(ck::make_tuple(s3, s2), s1, s0));
+    const auto layout_compiletime = ck::wrapper::make_layout(
+        ck::make_tuple(
+            ck::make_tuple(ck::Number<d3>{}, ck::Number<d2>{}), ck::Number<d1>{}, ck::Number<d0>{}),
+        ck::make_tuple(ck::make_tuple(ck::Number<s3>{}, ck::Number<s2>{}),
+                       ck::Number<s1>{},
+                       ck::Number<s0>{}));
+    std::vector<ck::Tuple<ck::index_t, ck::index_t, ck::index_t>> idxs_3d;
+
+    for(ck::index_t d = 0; d < d2 * d3; d++)
+    {
+        for(ck::index_t h = 0; h < d1; h++)
+        {
+            for(ck::index_t w = 0; w < d0; w++)
+            {
+                idxs_3d.emplace_back(d, h, w);
+            }
+        }
+    }
+    this->Run(desc_3d, desc_1d, layout_runtime, layout_compiletime, idxs_3d);
+
+    // Check also 4d iteration
+    std::vector<ck::Tuple<ck::Tuple<ck::index_t, ck::index_t>, ck::index_t, ck::index_t>> idxs_4d;
+
+    for(ck::index_t e = 0; e < d3; e++)
+    {
+        for(ck::index_t d = 0; d < d2; d++)
+        {
+            for(ck::index_t h = 0; h < d1; h++)
+            {
+                for(ck::index_t w = 0; w < d0; w++)
+                {
+                    idxs_4d.emplace_back(ck::make_tuple(e, d), h, w);
+                }
+            }
+        }
+    }
+    this->Run(desc, desc_1d, layout_runtime, layout_compiletime, idxs_4d);
+}
+
+TEST_F(TestWrapperLayout, 2d_nested)
+{
+    // dims:((2, 3), (4, 3)) strides:((2, 4), (48, 12))
+    constexpr ck::index_t d3 = 2;
+    constexpr ck::index_t d2 = 3;
+    constexpr ck::index_t d1 = 4;
+    constexpr ck::index_t d0 = 3;
+    constexpr ck::index_t s3 = 2;
+    constexpr ck::index_t s2 = 4;
+    constexpr ck::index_t s1 = 48;
+    constexpr ck::index_t s0 = 12;
+    const auto desc          = ck::make_naive_tensor_descriptor(
+        ck::make_tuple(ck::Number<d3>{}, ck::Number<d2>{}, ck::Number<d1>{}, ck::Number<d0>{}),
+        ck::make_tuple(ck::Number<s3>{}, ck::Number<s2>{}, ck::Number<s1>{}, ck::Number<s0>{}));
+    // Reverse due to column major
+    const auto desc_1d = transform_tensor_descriptor(
+        desc,
+        ck::make_tuple(ck::make_merge_transform(ck::make_tuple(d0, d1, d2, d3))),
+        ck::make_tuple(ck::Sequence<3, 2, 1, 0>{}),
+        ck::make_tuple(ck::Sequence<0>{}));
+    const auto desc_2d = transform_tensor_descriptor(
+        desc,
+        ck::make_tuple(ck::make_merge_transform(ck::make_tuple(d2, d3)),
+                       ck::make_merge_transform(ck::make_tuple(d0, d1))),
+        ck::make_tuple(ck::Sequence<1, 0>{}, ck::Sequence<3, 2>{}),
+        ck::make_tuple(ck::Sequence<0>{}, ck::Sequence<1>{}));
+    const auto layout_runtime =
+        ck::wrapper::make_layout(ck::make_tuple(ck::make_tuple(d3, d2), ck::make_tuple(d1, d0)),
+                                 ck::make_tuple(ck::make_tuple(s3, s2), ck::make_tuple(s1, s0)));
+    const auto layout_compiletime = ck::wrapper::make_layout(
+        ck::make_tuple(ck::make_tuple(ck::Number<d3>{}, ck::Number<d2>{}),
+                       ck::make_tuple(ck::Number<d1>{}, ck::Number<d0>{})),
+        ck::make_tuple(ck::make_tuple(ck::Number<s3>{}, ck::Number<s2>{}),
+                       ck::make_tuple(ck::Number<s1>{}, ck::Number<s0>{})));
+    std::vector<ck::Tuple<ck::index_t, ck::index_t>> idxs_2d;
+
+    for(ck::index_t h = 0; h < d2 * d3; h++)
+    {
+        for(ck::index_t w = 0; w < d0 * d1; w++)
+        {
+            idxs_2d.emplace_back(h, w);
+        }
+    }
+    this->Run(desc_2d, desc_1d, layout_runtime, layout_compiletime, idxs_2d);
+    // Check also 4d iteration
+    std::vector<ck::Tuple<ck::Tuple<ck::index_t, ck::index_t>, ck::Tuple<ck::index_t, ck::index_t>>>
+        idxs_4d;
+
+    for(ck::index_t e = 0; e < d3; e++)
+    {
+        for(ck::index_t d = 0; d < d2; d++)
+        {
+            for(ck::index_t h = 0; h < d1; h++)
+            {
+                for(ck::index_t w = 0; w < d0; w++)
+                {
+                    idxs_4d.emplace_back(ck::make_tuple(e, d), ck::make_tuple(h, w));
+                }
+            }
+        }
+    }
+    this->Run(desc, desc_1d, layout_runtime, layout_compiletime, idxs_4d);
+}
+
+TEST_F(TestWrapperLayout, 3d_double_nested)
+{
+    // dims:(((2, 2), 3), (4, 3)) strides:(((2, 4), 8), (96, 24))
+    constexpr ck::index_t d4 = 2;
+    constexpr ck::index_t d3 = 2;
+    constexpr ck::index_t d2 = 3;
+    constexpr ck::index_t d1 = 4;
+    constexpr ck::index_t d0 = 3;
+    constexpr ck::index_t s4 = 2;
+    constexpr ck::index_t s3 = 4;
+    constexpr ck::index_t s2 = 8;
+    constexpr ck::index_t s1 = 96;
+    constexpr ck::index_t s0 = 24;
+    const auto desc          = ck::make_naive_tensor_descriptor(ck::make_tuple(ck::Number<d4>{},
+                                                                      ck::Number<d3>{},
+                                                                      ck::Number<d2>{},
+                                                                      ck::Number<d1>{},
+                                                                      ck::Number<d0>{}),
+                                                       ck::make_tuple(ck::Number<s4>{},
+                                                                      ck::Number<s3>{},
+                                                                      ck::Number<s2>{},
+                                                                      ck::Number<s1>{},
+                                                                      ck::Number<s0>{}));
+    // Reverse due to column major
+    const auto desc_1d = transform_tensor_descriptor(
+        desc,
+        ck::make_tuple(ck::make_merge_transform(ck::make_tuple(d0, d1, d2, d3, d4))),
+        ck::make_tuple(ck::Sequence<4, 3, 2, 1, 0>{}),
+        ck::make_tuple(ck::Sequence<0>{}));
+    const auto desc_3d = transform_tensor_descriptor(
+        desc,
+        ck::make_tuple(ck::make_merge_transform(ck::make_tuple(d3, d4)),
+                       ck::make_pass_through_transform(d2),
+                       ck::make_merge_transform(ck::make_tuple(d0, d1))),
+        ck::make_tuple(ck::Sequence<1, 0>{}, ck::Sequence<2>{}, ck::Sequence<4, 3>{}),
+        ck::make_tuple(ck::Sequence<0>{}, ck::Sequence<1>{}, ck::Sequence<2>{}));
+    const auto desc_2d = transform_tensor_descriptor(
+        desc_3d,
+        ck::make_tuple(ck::make_merge_transform(ck::make_tuple(d2, d3 * d4)),
+                       ck::make_pass_through_transform(d1 * d0)),
+        ck::make_tuple(ck::Sequence<1, 0>{}, ck::Sequence<2>{}),
+        ck::make_tuple(ck::Sequence<0>{}, ck::Sequence<1>{}));
+    const auto layout_runtime = ck::wrapper::make_layout(
+        ck::make_tuple(ck::make_tuple(ck::make_tuple(d4, d3), d2), ck::make_tuple(d1, d0)),
+        ck::make_tuple(ck::make_tuple(ck::make_tuple(d4, s3), s2), ck::make_tuple(s1, s0)));
+    const auto layout_compiletime = ck::wrapper::make_layout(
+        ck::make_tuple(
+            ck::make_tuple(ck::make_tuple(ck::Number<d4>{}, ck::Number<d3>{}), ck::Number<d2>{}),
+            ck::make_tuple(ck::Number<d1>{}, ck::Number<d0>{})),
+        ck::make_tuple(
+            ck::make_tuple(ck::make_tuple(ck::Number<d4>{}, ck::Number<s3>{}), ck::Number<s2>{}),
+            ck::make_tuple(ck::Number<s1>{}, ck::Number<s0>{})));
+    std::vector<ck::Tuple<ck::index_t, ck::index_t>> idxs_2d;
+
+    for(ck::index_t h = 0; h < d2 * d3 * d4; h++)
+    {
+        for(ck::index_t w = 0; w < d0 * d1; w++)
+        {
+            idxs_2d.emplace_back(h, w);
+        }
+    }
+    this->Run(desc_2d, desc_1d, layout_runtime, layout_compiletime, idxs_2d);
+    // Check also 3d iteration
+    std::vector<ck::Tuple<ck::Tuple<ck::index_t, ck::index_t>, ck::index_t>> idxs_3d;
+
+    for(ck::index_t d = 0; d < d3 * d4; d++)
+    {
+        for(ck::index_t h = 0; h < d2; h++)
+        {
+            for(ck::index_t w = 0; w < d1 * d0; w++)
+            {
+                idxs_3d.emplace_back(ck::make_tuple(d, h), w);
+            }
+        }
+    }
+    this->Run(desc_3d, desc_1d, layout_runtime, layout_compiletime, idxs_3d);
+    // Check also 5d iteration
+    std::vector<ck::Tuple<ck::Tuple<ck::Tuple<ck::index_t, ck::index_t>, ck::index_t>,
+                          ck::Tuple<ck::index_t, ck::index_t>>>
+        idxs_5d;
+
+    for(ck::index_t f = 0; f < d4; f++)
+    {
+        for(ck::index_t e = 0; e < d3; e++)
+        {
+            for(ck::index_t d = 0; d < d2; d++)
+            {
+                for(ck::index_t h = 0; h < d1; h++)
+                {
+                    for(ck::index_t w = 0; w < d0; w++)
+                    {
+                        idxs_5d.emplace_back(ck::make_tuple(ck::make_tuple(f, e), d),
+                                             ck::make_tuple(h, w));
+                    }
+                }
+            }
+        }
+    }
+    this->Run(desc, desc_1d, layout_runtime, layout_compiletime, idxs_5d);
+}
+
+TEST(TestLayoutHelpers, SizeAndGet)
+{
+    // dims:(((2, 2), 3), (4, 3))
+    constexpr ck::index_t d4  = 2;
+    constexpr ck::index_t d3  = 2;
+    constexpr ck::index_t d2  = 3;
+    constexpr ck::index_t d1  = 4;
+    constexpr ck::index_t d0  = 3;
+    const auto layout_runtime = ck::wrapper::make_layout(
+        ck::make_tuple(ck::make_tuple(ck::make_tuple(d4, d3), d2), ck::make_tuple(d1, d0)));
+    const auto layout_compiletime = ck::wrapper::make_layout(ck::make_tuple(
+        ck::make_tuple(ck::make_tuple(ck::Number<d4>{}, ck::Number<d3>{}), ck::Number<d2>{}),
+        ck::make_tuple(ck::Number<d1>{}, ck::Number<d0>{})));
+
+    // Size of layout
+    EXPECT_EQ(ck::wrapper::size(layout_runtime), d4 * d3 * d2 * d1 * d0);
+    EXPECT_EQ(ck::wrapper::size(layout_compiletime), d4 * d3 * d2 * d1 * d0);
+
+    // Size of dims
+    EXPECT_EQ(ck::wrapper::size<0>(layout_runtime), d4 * d3 * d2);
+    EXPECT_EQ(ck::wrapper::size<0>(layout_compiletime), d4 * d3 * d2);
+    EXPECT_EQ(ck::wrapper::size<1>(layout_runtime), d1 * d0);
+    EXPECT_EQ(ck::wrapper::size<1>(layout_compiletime), d1 * d0);
+
+    // Acces via new layout (using get on layout)
+    EXPECT_EQ(ck::wrapper::size<0>(ck::wrapper::get<0>(layout_runtime)), d4 * d3);
+    EXPECT_EQ(ck::wrapper::size<0>(ck::wrapper::get<0>(layout_compiletime)), d4 * d3);
+    EXPECT_EQ(ck::wrapper::size<1>(ck::wrapper::get<0>(layout_runtime)), d2);
+    EXPECT_EQ(ck::wrapper::size<1>(ck::wrapper::get<0>(layout_compiletime)), d2);
+
+    EXPECT_EQ(ck::wrapper::size<0>(ck::wrapper::get<0>(ck::wrapper::get<0>(layout_runtime))), d4);
+    EXPECT_EQ(ck::wrapper::size<0>(ck::wrapper::get<0>(ck::wrapper::get<0>(layout_compiletime))),
+              d4);
+    EXPECT_EQ(ck::wrapper::size<1>(ck::wrapper::get<0>(ck::wrapper::get<0>(layout_runtime))), d3);
+    EXPECT_EQ(ck::wrapper::size<1>(ck::wrapper::get<0>(ck::wrapper::get<0>(layout_compiletime))),
+              d3);
+
+    EXPECT_EQ(ck::wrapper::size<1>(ck::wrapper::get<0>(layout_runtime)), d2);
+    EXPECT_EQ(ck::wrapper::size<1>(ck::wrapper::get<0>(layout_compiletime)), d2);
+
+    EXPECT_EQ(ck::wrapper::size<0>(ck::wrapper::get<1>(layout_runtime)), d1);
+    EXPECT_EQ(ck::wrapper::size<0>(ck::wrapper::get<1>(layout_compiletime)), d1);
+    EXPECT_EQ(ck::wrapper::size<1>(ck::wrapper::get<1>(layout_runtime)), d0);
+    EXPECT_EQ(ck::wrapper::size<1>(ck::wrapper::get<1>(layout_compiletime)), d0);
+}
+
+TEST(TestLayoutHelpers, DepthAndRank)
+{
+    // dims:(((2, 2), 3), (4, 3))
+    constexpr ck::index_t d4  = 2;
+    constexpr ck::index_t d3  = 2;
+    constexpr ck::index_t d2  = 3;
+    constexpr ck::index_t d1  = 4;
+    constexpr ck::index_t d0  = 3;
+    const auto layout_runtime = ck::wrapper::make_layout(
+        ck::make_tuple(ck::make_tuple(ck::make_tuple(d4, d3), d2), ck::make_tuple(d1, d0)));
+    const auto layout_compiletime = ck::wrapper::make_layout(ck::make_tuple(
+        ck::make_tuple(ck::make_tuple(ck::Number<d4>{}, ck::Number<d3>{}), ck::Number<d2>{}),
+        ck::make_tuple(ck::Number<d1>{}, ck::Number<d0>{})));
+
+    EXPECT_EQ(ck::wrapper::depth(layout_runtime), 3);
+    EXPECT_EQ(ck::wrapper::depth(layout_compiletime), 3);
+    EXPECT_EQ(ck::wrapper::depth(ck::make_tuple(ck::make_tuple(d4, d3), d2)), 2);
+    // Check for integer
+    EXPECT_EQ(ck::wrapper::depth(d0), 0);
+
+    EXPECT_EQ(ck::wrapper::rank(layout_runtime), 2);
+    EXPECT_EQ(ck::wrapper::rank(layout_compiletime), 2);
+    EXPECT_EQ(ck::wrapper::rank(ck::make_tuple(ck::make_tuple(d4, d3), d2)), 2);
+    // Check for integer
+    EXPECT_EQ(ck::wrapper::rank(d0), 1);
+}
+
+TEST(TestLayoutHelpers, ShapeAndStrides)
+{
+    // dims:(((2, 2), 3), (4, 3))
+    constexpr ck::index_t d4     = 2;
+    constexpr ck::index_t d3     = 2;
+    constexpr ck::index_t d2     = 3;
+    constexpr ck::index_t d1     = 4;
+    constexpr ck::index_t d0     = 3;
+    constexpr ck::index_t s4     = 2;
+    constexpr ck::index_t s3     = 4;
+    constexpr ck::index_t s2     = 8;
+    constexpr ck::index_t s1     = 96;
+    constexpr ck::index_t s0     = 24;
+    const auto shape_compiletime = ck::make_tuple(
+        ck::make_tuple(ck::make_tuple(ck::Number<d4>{}, ck::Number<d3>{}), ck::Number<d2>{}),
+        ck::make_tuple(ck::Number<d1>{}, ck::Number<d0>{}));
+    const auto strides_compiletime = ck::make_tuple(
+        ck::make_tuple(ck::make_tuple(ck::Number<s4>{}, ck::Number<s3>{}), ck::Number<s2>{}),
+        ck::make_tuple(ck::Number<s1>{}, ck::Number<s0>{}));
+    const auto shape_runtime =
+        ck::make_tuple(ck::make_tuple(ck::make_tuple(d4, d3), d2), ck::make_tuple(d1, d0));
+    const auto strides_runtime =
+        ck::make_tuple(ck::make_tuple(ck::make_tuple(s4, s3), s2), ck::make_tuple(s1, s0));
+    const auto layout_runtime = ck::wrapper::make_layout(shape_runtime, strides_runtime);
+    const auto layout_compiletime =
+        ck::wrapper::make_layout(shape_compiletime, strides_compiletime);
+
+    constexpr bool check_compiletime_shape =
+        std::is_same_v<std::remove_const<decltype(shape_compiletime)>::type,
+                       decltype(shape(layout_compiletime))>;
+    constexpr bool check_compiletime_strides =
+        std::is_same_v<std::remove_const<decltype(strides_compiletime)>::type,
+                       decltype(stride(layout_compiletime))>;
+    constexpr bool check_runtime_shape =
+        std::is_same_v<std::remove_const<decltype(shape_runtime)>::type,
+                       decltype(shape(layout_runtime))>;
+    constexpr bool check_runtime_strides =
+        std::is_same_v<std::remove_const<decltype(strides_runtime)>::type,
+                       decltype(stride(layout_runtime))>;
+    EXPECT_TRUE(check_compiletime_shape);
+    EXPECT_TRUE(check_compiletime_strides);
+    EXPECT_TRUE(check_runtime_shape);
+    EXPECT_TRUE(check_runtime_strides);
+}
+
+TEST(TestLayoutHelpers, Hierarchical)
+{
+    // dims:(((2, 2), 3), (4, 3))
+    constexpr ck::index_t d4 = 2;
+    constexpr ck::index_t d3 = 2;
+    constexpr ck::index_t d2 = 3;
+    constexpr ck::index_t d1 = 4;
+    constexpr ck::index_t d0 = 3;
+    const auto runtime_shape =
+        ck::make_tuple(ck::make_tuple(ck::make_tuple(d4, d3), d2), ck::make_tuple(d1, d0));
+    const auto layout_runtime     = ck::wrapper::make_layout(runtime_shape);
+    const auto layout_compiletime = ck::wrapper::make_layout(ck::make_tuple(
+        ck::make_tuple(ck::make_tuple(ck::Number<d4>{}, ck::Number<d3>{}), ck::Number<d2>{}),
+        ck::make_tuple(ck::Number<d1>{}, ck::Number<d0>{})));
+
+    EXPECT_EQ((ck::wrapper::rank<0, 0>(runtime_shape)), 2);
+    EXPECT_EQ((ck::wrapper::rank<0, 0>(layout_runtime)), 2);
+    EXPECT_EQ((ck::wrapper::rank<0, 0>(layout_compiletime)), 2);
+
+    EXPECT_EQ((ck::wrapper::depth<0, 0>(runtime_shape)), 1);
+    EXPECT_EQ((ck::wrapper::depth<0, 0>(layout_runtime)), 1);
+    EXPECT_EQ((ck::wrapper::depth<0, 0>(layout_compiletime)), 1);
+
+    EXPECT_EQ((ck::wrapper::size<0, 0>(runtime_shape)), d4 * d3);
+    EXPECT_EQ((ck::wrapper::size<0, 0>(layout_runtime)), d4 * d3);
+    EXPECT_EQ((ck::wrapper::size<0, 0>(layout_compiletime)), d4 * d3);
+
+    EXPECT_EQ((ck::wrapper::get<0, 0, 0>(runtime_shape)), d4);
+}