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composable_kernel/docs/wrapper.rst
randyh62 a39163814e doc reorg and edits (#1112)
* doc reorg and edits

* Update wrapper.rst with changes from PR #1098

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Co-authored-by: Bartlomiej Wroblewski <bwroblewski10@gmail.com>

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* Update docs/what-is-ck.rst

Restored to 4 bullets, with additional text for wrapper.

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* Update API_Reference_Guide.rst

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---------

Co-authored-by: Bartlomiej Wroblewski <bwroblewski10@gmail.com>
Co-authored-by: Lisa <lisajdelaney@gmail.com>
Co-authored-by: Illia Silin <98187287+illsilin@users.noreply.github.com>
2024-01-05 11:04:01 -08:00

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ReStructuredText

.. meta::
:description: Composable Kernel documentation and API reference library
:keywords: composable kernel, CK, ROCm, API, documentation
.. _wrapper:
********************************************************************
Wrapper
********************************************************************
-------------------------------------
Description
-------------------------------------
.. note::
The wrapper is under development and its functionality is limited.
The CK library 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) and memory access (using Tensor).
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::array<ck::index_t, 32> data;
auto tensor = ck::wrapper::make_tensor<ck::wrapper::MemoryTypeEnum::Generic>(&data[0], layout);
for(ck::index_t w = 0; w < size(tensor); w++) {
tensor(w) = w;
}
// slice() == slice(0, -1) (whole dimension)
auto tensor_slice = tensor(ck::wrapper::slice(1, 3), ck::make_tuple(ck::wrapper::slice(), ck::wrapper::slice()));
std::cout << "dims:2,(2,4) strides:2,(1,8)" << std::endl;
for(ck::index_t h = 0; h < ck::wrapper::size<0>(tensor_slice); h++)
{
for(ck::index_t w = 0; w < ck::wrapper::size<1>(tensor_slice); w++)
{
std::cout << tensor_slice(h, w) << " ";
}
std::cout << std::endl;
}
Output::
dims:2,(2,4) strides:2,(1,8)
1 5 9 13 17 21 25 29
2 6 10 14 18 22 26 30
-------------------------------------
Layout
-------------------------------------
.. doxygenstruct:: ck::wrapper::Layout
-------------------------------------
Layout helpers
-------------------------------------
.. doxygenfile:: layout_utils.hpp
-------------------------------------
Tensor
-------------------------------------
.. doxygenstruct:: ck::wrapper::Tensor
-------------------------------------
Tensor helpers
-------------------------------------
.. doxygenfile:: tensor_utils.hpp
.. doxygenfile:: tensor_partition.hpp
-------------------------------------
Operations
-------------------------------------
.. doxygenfile:: copy.hpp