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https://github.com/ggml-org/llama.cpp.git
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ae8de6d50a
* ggml : build backends as libraries --------- Signed-off-by: Xiaodong Ye <xiaodong.ye@mthreads.com> Co-authored-by: Georgi Gerganov <ggerganov@gmail.com> Co-authored-by: R0CKSTAR <xiaodong.ye@mthreads.com>
124 lines
4.4 KiB
C
124 lines
4.4 KiB
C
/*
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* Copyright (c) 2023-2024 The ggml authors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#pragma once
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#include "ggml-backend.h"
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#include "ggml.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Maximum number of CANN devices supported.
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*/
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#define GGML_CANN_MAX_DEVICES 16
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GGML_BACKEND_API ggml_backend_reg_t ggml_backend_cann_reg(void);
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/**
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* @brief Initializes the CANN backend for a specified device.
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*
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* This function initializes the CANN backend for the given device.
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* It verifies the device index, allocates a context, and creates a backend
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* instance.
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*
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* @param device The index of the device to initialize.
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* @return A pointer to the initialized backend instance, or nullptr on failure.
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*/
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GGML_BACKEND_API ggml_backend_t ggml_backend_cann_init(int32_t device);
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/**
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* @brief Checks if a given backend is a CANN backend.
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*
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* This function verifies if the provided backend is a CANN backend by comparing
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* its GUID with the CANN backend's GUID.
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*
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* @param backend The backend instance to check.
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* @return True if the backend is a CANN backend, false otherwise.
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*/
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GGML_BACKEND_API bool ggml_backend_is_cann(ggml_backend_t backend);
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/**
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* @brief Retrieves the CANN buffer type for a specified device.
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*
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* This function initializes and returns the buffer type interface associated
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* with the given device. It ensures thread-safe access using a mutex.
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*
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* @param device The device index for which to retrieve the buffer type.
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* @return A pointer to the buffer type interface for the specified device, or
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* nullptr if the device index is out of range.
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*/
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GGML_BACKEND_API ggml_backend_buffer_type_t
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ggml_backend_cann_buffer_type(int32_t device);
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/**
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* @brief Retrieves the number of CANN devices available.
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*
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* This function returns the number of CANN devices available based on
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* information obtained from `ggml_cann_info()`.
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*
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* @return The number of CANN devices available.
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*/
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GGML_BACKEND_API int32_t ggml_backend_cann_get_device_count(void);
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/**
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* @brief pinned host buffer for use with the CPU backend for faster copies between CPU and NPU.
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*
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* @return A pointer to the host buffer type interface.
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*/
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GGML_BACKEND_API ggml_backend_buffer_type_t ggml_backend_cann_host_buffer_type(void);
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/**
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* @brief Retrieves the description of a specific CANN device.
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*
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* This function sets the specified device, retrieves the SoC name,
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* and writes it into the provided description buffer.
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*
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* @param device The device index to retrieve the description for.
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* @param description Pointer to a buffer where the description will be written.
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* @param description_size Size of the description buffer.
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*/
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GGML_BACKEND_API void ggml_backend_cann_get_device_description(
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int32_t device, char* description, size_t description_size);
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/**
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* @brief Retrieves the memory information of a specific CANN device.
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*
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* This function sets the specified device, retrieves the free and total
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* memory information of the specified type (ACL_HBM_MEM), and stores them
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* in the provided pointers.
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*
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* @param device The device index to retrieve memory information for.
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* @param free Pointer to a variable where the free memory size will be stored.
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* @param total Pointer to a variable where the total memory size will be
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* stored.
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*/
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GGML_BACKEND_API void ggml_backend_cann_get_device_memory(int32_t device,
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size_t* free,
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size_t* total);
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#ifdef __cplusplus
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}
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#endif
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