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* Copyright (c) 2023-2026 The ggml authors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#ifndef CANN_ACL_TENSOR_H
#define CANN_ACL_TENSOR_H
#include "common.h"
#include <aclnn/aclnn_base.h>
#include <algorithm>
#include <cstring>
/**
* @brief Maps a ggml_type to its corresponding aclDataType.
*
* @details This function takes a ggml_type as input and returns the corresponding
* aclDataType. It supports mapping for various ggml_types. If the input type
* does not match any of the predefined ggml_types, the function returns
* ACL_DT_UNDEFINED.
*
* @param type The ggml_type to be mapped.
* @return The corresponding aclDataType. If the input type is not recognized,
* ACL_DT_UNDEFINED is returned.
*/
aclDataType ggml_cann_type_mapping(ggml_type type);
// Deleter for acl objects.
template <typename T, aclError (*DestroyFunc)(const T *)> struct acl_deleter {
void operator()(T * ptr) const noexcept {
if (ptr) {
ACL_CHECK(DestroyFunc(ptr));
}
}
};
using acl_tensor_ptr = std::unique_ptr<aclTensor, acl_deleter<aclTensor, aclDestroyTensor>>;
using acl_int_array_ptr = std::unique_ptr<aclIntArray, acl_deleter<aclIntArray, aclDestroyIntArray>>;
using acl_scalar_ptr = std::unique_ptr<aclScalar, acl_deleter<aclScalar, aclDestroyScalar>>;
using acl_tensor_list_ptr = std::unique_ptr<aclTensorList, acl_deleter<aclTensorList, aclDestroyTensorList>>;
/**
* @brief Creates an ACL tensor from a ggml_tensor with optional shape.
*
* @details This function creates an ACL tensor based on the properties of the
* provided ggml_tensor. It supports customer shape by adjusting dimensions
* and strides accordingly. If customer shape is applied, additional
* dimensions and strides are calculated based on the provided parameters.
*
* @param tensor Pointer to the ggml_tensor to be converted to ACL tensor.
* @param ne Pointer to an array containing dimensions. Defaults to nullptr
* if no customer shape is applied.
* @param nb Pointer to an array containing strides. Defaults to nullptr
* if no customer shape is applied.
* @param dims Number of dimensions in the tensor. Defaults to 0 if no customer
* shape is applied.
* @param format ACL tensor format. Defaults to ACL_FORMAT_ND.
* @param offset Offset in bytes for the ACL tensor data. Defaults to 0.
* @return Pointer to the created ACL tensor.
*/
acl_tensor_ptr ggml_cann_create_tensor(const ggml_tensor * tensor,
int64_t * ne = nullptr,
size_t * nb = nullptr,
int64_t dims = 0,
aclFormat format = ACL_FORMAT_ND,
size_t offset = 0);
/**
* @brief Template for creating an ACL tensor from provided parameters. typename TYPE
* should be size_t or float.
*
* @details This function creates an ACL tensor using the provided data pointer,
* data type, dimensions, strides, format, offset, and additional parameters.
* It calculates necessary dimensions and strides based on the provided ne and nb
* arrays, adjusting them for the ACL tensor creation. The ACL storage length
* is also calculated based on the provided dimensions and strides.
*
* @param data_ptr Pointer to the data buffer for the ACL tensor.
* @param dtype ACL data type of the tensor.
* @param type_size Size of each element in the tensor data buffer.
* @param ne Pointer to an array containing tensor dimensions.
* @param nb Pointer to an array containing tensor strides.
* @param dims Number of dimensions of the tensor.
* @param format ACL tensor format. Defaults to ACL_FORMAT_ND.
* @param offset Offset in bytes for the ACL tensor data. Defaults to 0.
* @return Pointer to the created ACL tensor.
*/
template <typename TYPE>
acl_tensor_ptr ggml_cann_create_tensor(void * data_ptr,
aclDataType dtype,
TYPE type_size,
int64_t * ne,
TYPE * nb,
int64_t dims,
aclFormat format = ACL_FORMAT_ND,
size_t offset = 0) {
int64_t tmp_ne[GGML_MAX_DIMS * 2];
int64_t tmp_stride[GGML_MAX_DIMS * 2];
memcpy(tmp_ne, ne, dims * sizeof(int64_t));
for (int i = 0; i < dims; i++) {
tmp_stride[i] = nb[i] / type_size;
}
int64_t acl_storage_len = 1;
for (int i = 0; i < dims; i++) {
acl_storage_len += (tmp_ne[i] - 1) * tmp_stride[i];
}
std::reverse(tmp_ne, tmp_ne + dims);
std::reverse(tmp_stride, tmp_stride + dims);
aclTensor * raw =
aclCreateTensor(tmp_ne, dims, dtype, tmp_stride, offset / type_size, format, &acl_storage_len, 1, data_ptr);
return acl_tensor_ptr(raw);
}
/**
* @brief Create an ACL int array resource wrapped in a smart pointer.
*
* This function constructs an aclIntArray from the provided int64_t values
* and returns it as an acl_int_array_ptr (a std::unique_ptr with a custom
* deleter). The returned pointer owns the ACL resource and will automatically
* destroy it via aclDestroyIntArray().
*
* @param value Pointer to the int64_t elements.
* @param size Number of elements in value.
*
* @return A smart pointer managing the created ACL int array.
*/
acl_int_array_ptr ggml_cann_create_int_array(const int64_t * value, uint64_t size);
/**
* @brief Create an ACL scalar resource wrapped in a smart pointer.
*
* This function constructs an aclScalar from the raw value pointer and ACL
* data type, then returns it as an acl_scalar_ptr (a std::unique_ptr with
* a custom deleter). The returned pointer owns the ACL scalar and will
* automatically destroy it via aclDestroyScalar().
*
* @param value Pointer to the raw scalar memory.
* @param dataType ACL data type of the scalar.
*
* @return A smart pointer managing the created ACL scalar.
*/
acl_scalar_ptr ggml_cann_create_scalar(void * value, aclDataType dataType);
/**
* @brief Create an ACL tensor list from multiple tensor smart pointers.
*
* This function accepts a variadic list of acl_tensor_ptr (a unique_ptr with
* custom deleter) and produces an aclTensorList using aclCreateTensorList().
*
* The lifecycle management of the tensor objects changes as follows:
* - aclCreateTensorList() takes ownership of the tensors
* - Each input smart pointer releases ownership using release()
* - As a result, the tensors will NOT be destroyed by unique_ptr
* - Instead, they will be destroyed when aclDestroyTensorList() is called
*
* This ensures correct ownership transfer and prevents double-free situations.
*
* @param acl_tensor_ptr Variadic template parameter; each argument must be
* a unique_ptr-like type supporting get() and release().
*
* @param tensors Variadic list of acl_tensor_ptr objects. Ownership of
* each tensor is transferred away from these smart pointers.
*
* @return A smart pointer (acl_tensor_list_ptr) owning the created ACL tensor list.
*
* @note This implementation is C++11 compatible. The ownership-release process is
* executed using a pack expansion inside an initializer list.
*/
template <typename... acl_tensor_ptr> acl_tensor_list_ptr ggml_cann_create_tensor_list(acl_tensor_ptr &&... tensors) {
aclTensor * raw_tensors[] = { tensors.get()... };
aclTensorList * raw = aclCreateTensorList(raw_tensors, sizeof...(tensors));
// aclTensor will release by aclTensorList, so release ownership without
// destroying the tensor
int dummy[] = { (tensors.release(), 0)... };
GGML_UNUSED(dummy);
return acl_tensor_list_ptr(raw);
}
/**
* @brief Checks if tensors require broadcasting based on their shapes.
*
* @details This function determines if two ggml_tensors need to be broadcasted for
* element-wise operations. Broadcasting is necessary if the shapes of the
* tensors are not identical and no dimension in either tensor equals 1.
*
* @param t0 Pointer to the first ggml_tensor.
* @param t1 Pointer to the second ggml_tensor.
* @return True if broadcasting is needed, False otherwise.
*
* @remarks This function iterates over the dimensions of t0 and t1. It checks if each
* dimension in t1 differs from t0's corresponding dimension and is not equal
* to 1. If such a dimension is found, broadcasting is required to align t1
* with t0 for element-wise operations.
*/
bool ggml_cann_need_bcast(const ggml_tensor * t0, const ggml_tensor * t1);
/**
* @brief Computes broadcast shapes and strides for two ggml_tensors.
*
* @details This function calculates the broadcast shapes and strides for two ggml_tensors,
* following the broadcasting rules similar to numpy. It adjusts dimensions and
* strides to ensure compatibility for element-wise operations where one tensor
* can be broadcasted to match the shape of another tensor.
*
* @param src0 Pointer to the first ggml_tensor.
* @param src1 Pointer to the second ggml_tensor.
* @param bcast_ne_src0 Output array to store broadcasted dimensions for src0.
* @param bcast_ne_src1 Output array to store broadcasted dimensions for src1.
* @param bcast_nb_src0 Output array to store broadcasted strides for src0.
* @param bcast_nb_src1 Output array to store broadcasted strides for src1.
* @return Number of dimensions in the broadcasted shape.
*
* @pre ggml_can_repeat(src1, src0) must return true, indicating src1 can be broadcasted
* to match src0.
*
* @remarks This function iterates over the dimensions of src0 and src1, calculating the
* necessary broadcast dimensions and strides. If a dimension requires broadcasting
* (i.e., its size in src1 is smaller than in src0), an additional dimension is
* added with size calculated to match src0's dimension. This adjustment ensures
* that src1 can be element-wise broadcasted to src0's shape.
*
* How it works:
*
* if dim0 has padding.
* a -> (2, 2) padding = 2
* a: [[1, 2, *, *]
* [2, 3, *, *]]
* nb = (8, 4, 2)
*
* if a should bcast with b -> (2, 4)
* b' -> (2, 2, 2)
* b : [[1, 2, 3, 4, *, *]
* [5, 6, 7, 8, *, *]]
* nb = (12, 6, 1)
*
* after bcast:
* a' -> (2, 1, 2)
* a': [[[1, 2], *, *]
* [[2, 3], *, *]]
* nb = (8, 4, 2, 1)
*
* b' : [[[1, 2], [3, 4], *, *]
* [[5, 6], [7, 8], *, *]]
* nb = (12, 6, 2, 1)
* \endcode
*
* dim1 in a inserted dim, should add nb for dim1,
* and all other nb moves to next in order.
*/
int64_t ggml_cann_get_bcast_shape(const ggml_tensor * src0,
const ggml_tensor * src1,
int64_t * bcast_ne_src0,
int64_t * bcast_ne_src1,
size_t * bcast_nb_src0,
size_t * bcast_nb_src1);
// Bcast macro to avoid duplicate code.
#define BCAST_SHAPE(src0, src1) \
int64_t bcast_##src0##_ne[GGML_MAX_DIMS * 2]; \
int64_t bcast_##src1##_ne[GGML_MAX_DIMS * 2]; \
size_t bcast_##src0##_nb[GGML_MAX_DIMS * 2]; \
size_t bcast_##src1##_nb[GGML_MAX_DIMS * 2]; \
int64_t bcast_dims = ggml_cann_get_bcast_shape(src0, src1, bcast_##src0##_ne, bcast_##src1##_ne, \
bcast_##src0##_nb, bcast_##src1##_nb);
#define BCAST_PARAM(tensor) bcast_##tensor##_ne, bcast_##tensor##_nb, bcast_dims
/**
* @brief Calculates broadcast shapes for matrix multiplication.
*
* @details This function computes the broadcast shapes required for matrix multiplication
* based on the input, weight, and destination tensor shapes. It ensures that the
* dimensions of weight tensors are expanded appropriately to satisfy matrix
* multiplication broadcast rules.
*
* @param input_ne Array containing the dimensions of the input tensor.
* @param weight_ne Array containing the dimensions of the weight tensor.
* @param dst_ne Array containing the dimensions of the destination tensor.
* @param input_nb Array containing the strides of the input tensor.
* @param weight_nb Array containing the strides of the weight tensor.
* @param dst_nb Array containing the strides of the destination tensor.
* @param bcast_input_ne Output array for broadcasted input tensor dimensions.
* @param bcast_weight_ne Output array for broadcasted weight tensor dimensions.
* @param bcast_dst_ne Output array for broadcasted destination tensor dimensions.
* @param bcast_input_nb Output array for broadcasted input tensor strides.
* @param bcast_weight_nb Output array for broadcasted weight tensor strides.
* @param bcast_dst_nb Output array for broadcasted destination tensor strides.
* @return The number of dimensions in the broadcasted tensors.
*
* @remarks This function iterates over the tensor dimensions and calculates the broadcast
* shapes needed for matrix multiplication. It ensures that dimensions where
* weight tensor requires expansion are appropriately handled to conform with
* broadcasting rules.
* @note compare with ggml_cann_get_bcast_shape, mul_mat broadcast need add this new dim
* before cast dim.
* @sa ggml_cann_get_bcast_shape
*/
int64_t ggml_cann_get_mulmat_bcast_shape(const int64_t * input_ne,
const int64_t * weight_ne,
const int64_t * dst_ne,
const size_t * input_nb,
const size_t * weight_nb,
const size_t * dst_nb,
int64_t * bcast_input_ne,
int64_t * bcast_weight_ne,
int64_t * bcast_dst_ne,
size_t * bcast_input_nb,
size_t * bcast_weight_nb,
size_t * bcast_dst_nb);
// Bcast macro to avoid duplicate code.
#define BCAST_MUL_MAT_SHAPE(input, weight, dst) \
int64_t bcast_##input##_ne[GGML_MAX_DIMS * 2]; \
int64_t bcast_##weight##_ne[GGML_MAX_DIMS * 2]; \
int64_t bcast_##dst##_ne[GGML_MAX_DIMS * 2]; \
size_t bcast_##input##_nb[GGML_MAX_DIMS * 2]; \
size_t bcast_##weight##_nb[GGML_MAX_DIMS * 2]; \
size_t bcast_##dst##_nb[GGML_MAX_DIMS * 2]; \
int64_t bcast_dims = ggml_cann_get_mulmat_bcast_shape( \
input->ne, weight->ne, dst->ne, input->nb, weight->nb, dst->nb, bcast_##input##_ne, bcast_##weight##_ne, \
bcast_##dst##_ne, bcast_##input##_nb, bcast_##weight##_nb, bcast_##dst##_nb);
#define BCAST_MUL_MAT_PARAM(tensor) bcast_##tensor##_ne, bcast_##tensor##_nb, bcast_dims
#endif // CANN_ACL_TENSOR_H
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