Files
composable_kernel/include/ck_tile/host/reference/reference_elementwise.hpp
Yashvardhan Agarwal 606b0cc947 [CK_TILE] Support for elementwise kernel (#2246)
* Elementwise kernel implementation

Co-authored-by: Sami Aario <samaario@amd.com>
Co-authored-by: Mohsen Saffari <mohsen.saffari@amd.com>
Co-authored-by: yashagar <yashagar@amd.com>

* Elementwise with generalized nDims

* Adding the n-ary input tensor feature

* Generalize dimensions on top of inputs

* Add TFLOPS + remove std usage for tuples

* 1D basecase optimization

* Cleanup code + refactoring to a common interface

* Generalize to unary and add an example

* Cleanup, refactoring and commenting

* Suggestions for LWPCK-3170: elementwise kernel improvements

* Clang-format: remod.py

* Replace InputTensorType with XDataType as the type of input_tensors

* Add Tuple::apply and use it in ElementWiseKernel::operator to call operation with the exact number of arguments in xs

* Move examples to folder 19_elementwise

* Add missing copyright headers and fix some existing ones

* Replace an assert with throw std::runtime_error in elementwise example

* Avoid reading the output by using make_static_distributed_tensor for y_tile

* Removed two unused includes

* No need to move windows to the next block when each workgroup processes a single tile

* Only copy input tensors to the device

* Use get_warp_size to obtain warp size, and use ceiling division for grid size also for the unary example

* Adding output strides to the kernel, transposition example and update the other examples

* Changes made by remod.py

* Use default template parameter values for memory operation and coherence in a call to make_naive_tensor_view

* Move binary operations to include/ck_tile/ops/elementwise/binary_elementwise_operation.hpp

* Reuse generic reference binary/unary operation in examples + refactoring the transpose reference

* Fix comments in elementwise_example.cpp

- Refer to AMD terminology except when suggesting NVIDIA alternatives in parentheses
- ElementWiseTraits was renamed to ElementWiseShape
- Adopt suggestions made by Copilot when prompted to check for factual or typographical errors

* Simplify CMakeLists.txt and remove the unused variables this uncovers

* Rename a file and fix some copyright statements

* Changes made by script/clang-format-overwrite.sh

* Add basic unit test for ElementWiseKernel

* Remove left-over uninformative comment in apply unit test

* Changes made by clang-format-overwrite.sh

* fixup! Use default template parameter values for memory operation and coherence in a call to make_naive_tensor_view

* Clean up test_tuple_apply.cpp and test_elementwise_1d.cpp

* Use make_uniform_array_with_factory to define h_xs and d_xs_mems_owner as type std::array

* Use a DeviceMem constructor that calls get_element_space_size_in_bytes internally

* Move examples to folder 20_elementwise

* Reduced register pressure on the CK tile elementwise kernel + add 4d input example to be able benchmark against old CK

* Fix CLang formating

* Bump up the elementwise example folder number

* Elementwise: add padding + minor cleanup

* Add Vector Size inference + fix issue with wrong vectorization due to missing GuaranteedLastDimensionVectorStride setting in make_naive_tensor_view

* Add isSupportedArg to Elementwise kernel + addapt example and unit tests

* Fix clang-format on the unit test file

---------

Co-authored-by: Damien Lejeune <damien.lejeune@amd.com>
Co-authored-by: Sami Aario <samaario@amd.com>
Co-authored-by: Mohsen Saffari <mohsen.saffari@amd.com>
Co-authored-by: Aviral Goel <aviral.goel@amd.com>
2025-07-24 11:21:45 +02:00

48 lines
1.8 KiB
C++

// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
#pragma once
#include "ck_tile/core.hpp"
#include "ck_tile/host/host_tensor.hpp"
#include <thread>
namespace ck_tile {
template <typename ADataType, typename BDataType, typename ComputeDataType, typename ElementOp>
CK_TILE_HOST void reference_unary_elementwise(const HostTensor<ADataType>& a,
HostTensor<BDataType>& b,
ElementOp element_op)
{
// TODO: imeplement gpu version reference function
auto f = [&](auto i) {
auto v_a = type_convert<ComputeDataType>(a.mData[i]);
auto v_b = element_op(v_a);
b.mData[i] = ck_tile::type_convert<BDataType>(v_b);
};
make_ParallelTensorFunctor(f, b.get_element_space_size())(std::thread::hardware_concurrency());
}
template <typename ADataType,
typename BDataType,
typename CDataType,
typename ComputeDataType,
typename ElementOp>
CK_TILE_HOST void reference_binary_elementwise(const HostTensor<ADataType>& a,
const HostTensor<BDataType>& b,
HostTensor<CDataType>& c,
ElementOp element_op)
{
// TODO: imeplement gpu version reference function
auto f = [&](auto i) {
auto v_a = type_convert<ComputeDataType>(a.mData[i]);
auto v_b = type_convert<ComputeDataType>(b.mData[i]);
auto v_c = element_op(v_a, v_b);
c.mData[i] = ck_tile::type_convert<CDataType>(v_c);
};
make_ParallelTensorFunctor(f, c.get_element_space_size())(std::thread::hardware_concurrency());
}
} // namespace ck_tile