c826e57475
-Update mllama to take the cross attention state as embeddings in a batch, more similar to how Llava handles it. This improves integration with the input cache. -Pass locations in a prompt for embeddings using tags similar to Llava. -Abstract interface to vision models so the main runner accesses Clip and Mllama similarly Co-authored-by: Michael Yang <mxyng@pm.me>
1248 lines
60 KiB
C++
Vendored
1248 lines
60 KiB
C++
Vendored
/**
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* llama.cpp - commit 3f1ae2e32cde00c39b96be6d01c2997c29bae555 - do not edit this file
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*
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* MIT License
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*
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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 deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* 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 all
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* 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 FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef LLAMA_H
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#define LLAMA_H
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#include "ggml.h"
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#include "ggml-backend.h"
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdbool.h>
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#ifdef LLAMA_SHARED
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# if defined(_WIN32) && !defined(__MINGW32__)
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# ifdef LLAMA_BUILD
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# define LLAMA_API __declspec(dllexport)
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# else
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# define LLAMA_API __declspec(dllimport)
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# endif
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# else
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# define LLAMA_API __attribute__ ((visibility ("default")))
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# endif
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#else
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# define LLAMA_API
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#endif
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#ifdef __GNUC__
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# define DEPRECATED(func, hint) func __attribute__((deprecated(hint)))
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#elif defined(_MSC_VER)
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# define DEPRECATED(func, hint) __declspec(deprecated(hint)) func
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#else
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# define DEPRECATED(func, hint) func
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#endif
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#define LLAMA_DEFAULT_SEED 0xFFFFFFFF
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// TODO: use everywhere in the implementation
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#define LLAMA_TOKEN_NULL -1
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#define LLAMA_FILE_MAGIC_GGLA 0x67676c61u // 'ggla'
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#define LLAMA_FILE_MAGIC_GGSN 0x6767736eu // 'ggsn'
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#define LLAMA_FILE_MAGIC_GGSQ 0x67677371u // 'ggsq'
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#define LLAMA_SESSION_MAGIC LLAMA_FILE_MAGIC_GGSN
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#define LLAMA_SESSION_VERSION 9
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#define LLAMA_STATE_SEQ_MAGIC LLAMA_FILE_MAGIC_GGSQ
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#define LLAMA_STATE_SEQ_VERSION 2
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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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// C interface
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//
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// TODO: show sample usage
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//
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// struct llama_vocab; // TODO: add in the future
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struct llama_model;
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struct llama_context;
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struct llama_sampler;
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typedef int32_t llama_pos;
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typedef int32_t llama_token;
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typedef int32_t llama_seq_id;
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enum llama_vocab_type {
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LLAMA_VOCAB_TYPE_NONE = 0, // For models without vocab
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LLAMA_VOCAB_TYPE_SPM = 1, // LLaMA tokenizer based on byte-level BPE with byte fallback
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LLAMA_VOCAB_TYPE_BPE = 2, // GPT-2 tokenizer based on byte-level BPE
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LLAMA_VOCAB_TYPE_WPM = 3, // BERT tokenizer based on WordPiece
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LLAMA_VOCAB_TYPE_UGM = 4, // T5 tokenizer based on Unigram
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LLAMA_VOCAB_TYPE_RWKV = 5, // RWKV tokenizer based on greedy tokenization
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};
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// pre-tokenization types
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enum llama_vocab_pre_type {
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LLAMA_VOCAB_PRE_TYPE_DEFAULT = 0,
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LLAMA_VOCAB_PRE_TYPE_LLAMA3 = 1,
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LLAMA_VOCAB_PRE_TYPE_DEEPSEEK_LLM = 2,
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LLAMA_VOCAB_PRE_TYPE_DEEPSEEK_CODER = 3,
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LLAMA_VOCAB_PRE_TYPE_FALCON = 4,
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LLAMA_VOCAB_PRE_TYPE_MPT = 5,
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LLAMA_VOCAB_PRE_TYPE_STARCODER = 6,
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LLAMA_VOCAB_PRE_TYPE_GPT2 = 7,
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LLAMA_VOCAB_PRE_TYPE_REFACT = 8,
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LLAMA_VOCAB_PRE_TYPE_COMMAND_R = 9,
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LLAMA_VOCAB_PRE_TYPE_STABLELM2 = 10,
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LLAMA_VOCAB_PRE_TYPE_QWEN2 = 11,
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LLAMA_VOCAB_PRE_TYPE_OLMO = 12,
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LLAMA_VOCAB_PRE_TYPE_DBRX = 13,
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LLAMA_VOCAB_PRE_TYPE_SMAUG = 14,
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LLAMA_VOCAB_PRE_TYPE_PORO = 15,
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LLAMA_VOCAB_PRE_TYPE_CHATGLM3 = 16,
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LLAMA_VOCAB_PRE_TYPE_CHATGLM4 = 17,
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LLAMA_VOCAB_PRE_TYPE_VIKING = 18,
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LLAMA_VOCAB_PRE_TYPE_JAIS = 19,
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LLAMA_VOCAB_PRE_TYPE_TEKKEN = 20,
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LLAMA_VOCAB_PRE_TYPE_SMOLLM = 21,
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LLAMA_VOCAB_PRE_TYPE_CODESHELL = 22,
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LLAMA_VOCAB_PRE_TYPE_BLOOM = 23,
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LLAMA_VOCAB_PRE_TYPE_GPT3_FINNISH = 24,
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LLAMA_VOCAB_PRE_TYPE_EXAONE = 25,
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LLAMA_VOCAB_PRE_TYPE_CHAMELEON = 26,
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};
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enum llama_rope_type {
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LLAMA_ROPE_TYPE_NONE = -1,
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LLAMA_ROPE_TYPE_NORM = 0,
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LLAMA_ROPE_TYPE_NEOX = GGML_ROPE_TYPE_NEOX,
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};
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enum llama_token_type { //TODO: remove, required until per token attributes are available from GGUF file
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LLAMA_TOKEN_TYPE_UNDEFINED = 0,
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LLAMA_TOKEN_TYPE_NORMAL = 1,
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LLAMA_TOKEN_TYPE_UNKNOWN = 2,
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LLAMA_TOKEN_TYPE_CONTROL = 3,
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LLAMA_TOKEN_TYPE_USER_DEFINED = 4,
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LLAMA_TOKEN_TYPE_UNUSED = 5,
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LLAMA_TOKEN_TYPE_BYTE = 6,
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};
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enum llama_token_attr {
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LLAMA_TOKEN_ATTR_UNDEFINED = 0,
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LLAMA_TOKEN_ATTR_UNKNOWN = 1 << 0,
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LLAMA_TOKEN_ATTR_UNUSED = 1 << 1,
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LLAMA_TOKEN_ATTR_NORMAL = 1 << 2,
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LLAMA_TOKEN_ATTR_CONTROL = 1 << 3, // SPECIAL?
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LLAMA_TOKEN_ATTR_USER_DEFINED = 1 << 4,
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LLAMA_TOKEN_ATTR_BYTE = 1 << 5,
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LLAMA_TOKEN_ATTR_NORMALIZED = 1 << 6,
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LLAMA_TOKEN_ATTR_LSTRIP = 1 << 7,
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LLAMA_TOKEN_ATTR_RSTRIP = 1 << 8,
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LLAMA_TOKEN_ATTR_SINGLE_WORD = 1 << 9,
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};
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// model file types
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enum llama_ftype {
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LLAMA_FTYPE_ALL_F32 = 0,
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LLAMA_FTYPE_MOSTLY_F16 = 1, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q4_0 = 2, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q4_1 = 3, // except 1d tensors
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// LLAMA_FTYPE_MOSTLY_Q4_1_SOME_F16 = 4, // tok_embeddings.weight and output.weight are F16
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// LLAMA_FTYPE_MOSTLY_Q4_2 = 5, // support has been removed
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// LLAMA_FTYPE_MOSTLY_Q4_3 = 6, // support has been removed
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LLAMA_FTYPE_MOSTLY_Q8_0 = 7, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q5_0 = 8, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q5_1 = 9, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q2_K = 10, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q3_K_S = 11, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q3_K_M = 12, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q3_K_L = 13, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q4_K_S = 14, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q4_K_M = 15, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q5_K_S = 16, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q5_K_M = 17, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q6_K = 18, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_IQ2_XXS = 19, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_IQ2_XS = 20, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q2_K_S = 21, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_IQ3_XS = 22, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_IQ3_XXS = 23, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_IQ1_S = 24, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_IQ4_NL = 25, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_IQ3_S = 26, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_IQ3_M = 27, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_IQ2_S = 28, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_IQ2_M = 29, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_IQ4_XS = 30, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_IQ1_M = 31, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_BF16 = 32, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q4_0_4_4 = 33, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q4_0_4_8 = 34, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_Q4_0_8_8 = 35, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_TQ1_0 = 36, // except 1d tensors
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LLAMA_FTYPE_MOSTLY_TQ2_0 = 37, // except 1d tensors
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LLAMA_FTYPE_GUESSED = 1024, // not specified in the model file
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};
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enum llama_rope_scaling_type {
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LLAMA_ROPE_SCALING_TYPE_UNSPECIFIED = -1,
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LLAMA_ROPE_SCALING_TYPE_NONE = 0,
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LLAMA_ROPE_SCALING_TYPE_LINEAR = 1,
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LLAMA_ROPE_SCALING_TYPE_YARN = 2,
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LLAMA_ROPE_SCALING_TYPE_MAX_VALUE = LLAMA_ROPE_SCALING_TYPE_YARN,
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};
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enum llama_pooling_type {
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LLAMA_POOLING_TYPE_UNSPECIFIED = -1,
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LLAMA_POOLING_TYPE_NONE = 0,
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LLAMA_POOLING_TYPE_MEAN = 1,
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LLAMA_POOLING_TYPE_CLS = 2,
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LLAMA_POOLING_TYPE_LAST = 3,
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LLAMA_POOLING_TYPE_RANK = 4, // used by reranking models to attach the classification head to the graph
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};
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enum llama_attention_type {
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LLAMA_ATTENTION_TYPE_UNSPECIFIED = -1,
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LLAMA_ATTENTION_TYPE_CAUSAL = 0,
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LLAMA_ATTENTION_TYPE_NON_CAUSAL = 1,
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};
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enum llama_split_mode {
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LLAMA_SPLIT_MODE_NONE = 0, // single GPU
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LLAMA_SPLIT_MODE_LAYER = 1, // split layers and KV across GPUs
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LLAMA_SPLIT_MODE_ROW = 2, // split rows across GPUs
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};
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// TODO: simplify (https://github.com/ggerganov/llama.cpp/pull/9294#pullrequestreview-2286561979)
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typedef struct llama_token_data {
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llama_token id; // token id
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float logit; // log-odds of the token
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float p; // probability of the token
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} llama_token_data;
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typedef struct llama_token_data_array {
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// TODO: consider SoA
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llama_token_data * data;
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size_t size;
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int64_t selected; // this is the index in the data array (i.e. not the token id)
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bool sorted;
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} llama_token_data_array;
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typedef bool (*llama_progress_callback)(float progress, void * user_data);
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// Input data for llama_decode
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// A llama_batch object can contain input about one or many sequences
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// The provided arrays (i.e. token, embd, pos, etc.) must have size of n_tokens
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//
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// - token : the token ids of the input (used when embd is NULL)
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// - embd : token embeddings (i.e. float vector of size n_embd) (used when token is NULL)
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// - pos : the positions of the respective token in the sequence
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// - seq_id : the sequence to which the respective token belongs
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// - logits : if zero, the logits (and/or the embeddings) for the respective token will not be output
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//
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typedef struct llama_batch {
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int32_t n_tokens;
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llama_token * token;
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float * embd;
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int32_t n_embd;
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llama_pos * pos;
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int32_t * n_seq_id;
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llama_seq_id ** seq_id;
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int8_t * logits; // TODO: rename this to "output"
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// NOTE: helpers for smooth API transition - can be deprecated in the future
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// for future-proof code, use the above fields instead and ignore everything below
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//
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// pos[i] = all_pos_0 + i*all_pos_1
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//
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llama_pos all_pos_0; // used if pos == NULL
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llama_pos all_pos_1; // used if pos == NULL
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llama_seq_id all_seq_id; // used if seq_id == NULL
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} llama_batch;
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enum llama_model_kv_override_type {
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LLAMA_KV_OVERRIDE_TYPE_INT,
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LLAMA_KV_OVERRIDE_TYPE_FLOAT,
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LLAMA_KV_OVERRIDE_TYPE_BOOL,
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LLAMA_KV_OVERRIDE_TYPE_STR,
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};
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struct llama_model_kv_override {
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enum llama_model_kv_override_type tag;
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char key[128];
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union {
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int64_t val_i64;
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double val_f64;
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bool val_bool;
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char val_str[128];
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};
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};
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struct llama_model_params {
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int32_t n_gpu_layers; // number of layers to store in VRAM
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enum llama_split_mode split_mode; // how to split the model across multiple GPUs
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// main_gpu interpretation depends on split_mode:
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// LLAMA_SPLIT_MODE_NONE: the GPU that is used for the entire model
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// LLAMA_SPLIT_MODE_ROW: the GPU that is used for small tensors and intermediate results
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// LLAMA_SPLIT_MODE_LAYER: ignored
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int32_t main_gpu;
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// proportion of the model (layers or rows) to offload to each GPU, size: llama_max_devices()
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const float * tensor_split;
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// comma separated list of RPC servers to use for offloading
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const char * rpc_servers;
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// Called with a progress value between 0.0 and 1.0. Pass NULL to disable.
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// If the provided progress_callback returns true, model loading continues.
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// If it returns false, model loading is immediately aborted.
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llama_progress_callback progress_callback;
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// context pointer passed to the progress callback
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void * progress_callback_user_data;
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// override key-value pairs of the model meta data
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const struct llama_model_kv_override * kv_overrides;
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// Keep the booleans together to avoid misalignment during copy-by-value.
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bool vocab_only; // only load the vocabulary, no weights
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bool use_mmap; // use mmap if possible
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bool use_mlock; // force system to keep model in RAM
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bool check_tensors; // validate model tensor data
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};
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// NOTE: changing the default values of parameters marked as [EXPERIMENTAL] may cause crashes or incorrect results in certain configurations
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// https://github.com/ggerganov/llama.cpp/pull/7544
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struct llama_context_params {
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uint32_t n_ctx; // text context, 0 = from model
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uint32_t n_batch; // logical maximum batch size that can be submitted to llama_decode
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uint32_t n_ubatch; // physical maximum batch size
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uint32_t n_seq_max; // max number of sequences (i.e. distinct states for recurrent models)
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int32_t n_threads; // number of threads to use for generation
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int32_t n_threads_batch; // number of threads to use for batch processing
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enum llama_rope_scaling_type rope_scaling_type; // RoPE scaling type, from `enum llama_rope_scaling_type`
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enum llama_pooling_type pooling_type; // whether to pool (sum) embedding results by sequence id
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enum llama_attention_type attention_type; // attention type to use for embeddings
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// ref: https://github.com/ggerganov/llama.cpp/pull/2054
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float rope_freq_base; // RoPE base frequency, 0 = from model
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float rope_freq_scale; // RoPE frequency scaling factor, 0 = from model
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float yarn_ext_factor; // YaRN extrapolation mix factor, negative = from model
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float yarn_attn_factor; // YaRN magnitude scaling factor
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float yarn_beta_fast; // YaRN low correction dim
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float yarn_beta_slow; // YaRN high correction dim
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uint32_t yarn_orig_ctx; // YaRN original context size
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float defrag_thold; // defragment the KV cache if holes/size > thold, < 0 disabled (default)
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ggml_backend_sched_eval_callback cb_eval;
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void * cb_eval_user_data;
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enum ggml_type type_k; // data type for K cache [EXPERIMENTAL]
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enum ggml_type type_v; // data type for V cache [EXPERIMENTAL]
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// Keep the booleans together and at the end of the struct to avoid misalignment during copy-by-value.
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// TODO: move at the end of the struct
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bool logits_all; // the llama_decode() call computes all logits, not just the last one (DEPRECATED - set llama_batch.logits instead)
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bool embeddings; // if true, extract embeddings (together with logits)
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bool offload_kqv; // whether to offload the KQV ops (including the KV cache) to GPU
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bool flash_attn; // whether to use flash attention [EXPERIMENTAL]
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bool no_perf; // whether to measure performance timings
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// Abort callback
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// if it returns true, execution of llama_decode() will be aborted
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// currently works only with CPU execution
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ggml_abort_callback abort_callback;
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void * abort_callback_data;
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};
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// model quantization parameters
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typedef struct llama_model_quantize_params {
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int32_t nthread; // number of threads to use for quantizing, if <=0 will use std::thread::hardware_concurrency()
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enum llama_ftype ftype; // quantize to this llama_ftype
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enum ggml_type output_tensor_type; // output tensor type
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enum ggml_type token_embedding_type; // token embeddings tensor type
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bool allow_requantize; // allow quantizing non-f32/f16 tensors
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bool quantize_output_tensor; // quantize output.weight
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bool only_copy; // only copy tensors - ftype, allow_requantize and quantize_output_tensor are ignored
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bool pure; // quantize all tensors to the default type
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bool keep_split; // quantize to the same number of shards
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void * imatrix; // pointer to importance matrix data
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void * kv_overrides; // pointer to vector containing overrides
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} llama_model_quantize_params;
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typedef struct llama_logit_bias {
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llama_token token;
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float bias;
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} llama_logit_bias;
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||
|
||
typedef struct llama_sampler_chain_params {
|
||
bool no_perf; // whether to measure performance timings
|
||
} llama_sampler_chain_params;
|
||
|
||
// used in chat template
|
||
typedef struct llama_chat_message {
|
||
const char * role;
|
||
const char * content;
|
||
} llama_chat_message;
|
||
|
||
// lora adapter
|
||
struct llama_lora_adapter;
|
||
|
||
// Helpers for getting default parameters
|
||
// TODO: update API to start accepting pointers to params structs (https://github.com/ggerganov/llama.cpp/discussions/9172)
|
||
LLAMA_API struct llama_model_params llama_model_default_params(void);
|
||
LLAMA_API struct llama_context_params llama_context_default_params(void);
|
||
LLAMA_API struct llama_sampler_chain_params llama_sampler_chain_default_params(void);
|
||
LLAMA_API struct llama_model_quantize_params llama_model_quantize_default_params(void);
|
||
|
||
// Initialize the llama + ggml backend
|
||
// If numa is true, use NUMA optimizations
|
||
// Call once at the start of the program
|
||
LLAMA_API void llama_backend_init(void);
|
||
|
||
//optional:
|
||
LLAMA_API void llama_numa_init(enum ggml_numa_strategy numa);
|
||
|
||
// Optional: an auto threadpool gets created in ggml if not passed explicitly
|
||
LLAMA_API void llama_attach_threadpool(
|
||
struct llama_context * ctx,
|
||
ggml_threadpool_t threadpool,
|
||
ggml_threadpool_t threadpool_batch);
|
||
LLAMA_API void llama_detach_threadpool(struct llama_context * ctx);
|
||
|
||
// Call once at the end of the program - currently only used for MPI
|
||
LLAMA_API void llama_backend_free(void);
|
||
|
||
LLAMA_API struct llama_model * llama_load_model_from_file(
|
||
const char * path_model,
|
||
struct llama_model_params params);
|
||
|
||
LLAMA_API void llama_free_model(struct llama_model * model);
|
||
|
||
// TODO: rename to llama_init_from_model
|
||
LLAMA_API struct llama_context * llama_new_context_with_model(
|
||
struct llama_model * model,
|
||
struct llama_context_params params);
|
||
|
||
// TODO (jmorganca): this should most likely be passed in as part of a batch
|
||
// and not set on the context for all batches.
|
||
LLAMA_API void llama_set_cross_attention(struct llama_context * ctx, bool cross_attn_state);
|
||
|
||
// Frees all allocated memory
|
||
LLAMA_API void llama_free(struct llama_context * ctx);
|
||
|
||
LLAMA_API int64_t llama_time_us(void);
|
||
|
||
LLAMA_API size_t llama_max_devices(void);
|
||
|
||
LLAMA_API bool llama_supports_mmap (void);
|
||
LLAMA_API bool llama_supports_mlock (void);
|
||
LLAMA_API bool llama_supports_gpu_offload(void);
|
||
|
||
LLAMA_API uint32_t llama_n_ctx (const struct llama_context * ctx);
|
||
LLAMA_API uint32_t llama_n_batch (const struct llama_context * ctx);
|
||
LLAMA_API uint32_t llama_n_ubatch (const struct llama_context * ctx);
|
||
LLAMA_API uint32_t llama_n_seq_max (const struct llama_context * ctx);
|
||
|
||
LLAMA_API int32_t llama_n_vocab (const struct llama_model * model);
|
||
LLAMA_API int32_t llama_n_ctx_train(const struct llama_model * model);
|
||
LLAMA_API int32_t llama_n_embd (const struct llama_model * model);
|
||
LLAMA_API int32_t llama_n_layer (const struct llama_model * model);
|
||
LLAMA_API int32_t llama_n_head (const struct llama_model * model);
|
||
|
||
LLAMA_API const struct llama_model * llama_get_model(const struct llama_context * ctx);
|
||
|
||
LLAMA_API enum llama_pooling_type llama_pooling_type(const struct llama_context * ctx);
|
||
LLAMA_API enum llama_vocab_type llama_vocab_type (const struct llama_model * model);
|
||
LLAMA_API enum llama_rope_type llama_rope_type (const struct llama_model * model);
|
||
|
||
// Get the model's RoPE frequency scaling factor
|
||
LLAMA_API float llama_rope_freq_scale_train(const struct llama_model * model);
|
||
|
||
// Functions to access the model's GGUF metadata scalar values
|
||
// - The functions return the length of the string on success, or -1 on failure
|
||
// - The output string is always null-terminated and cleared on failure
|
||
// - GGUF array values are not supported by these functions
|
||
|
||
// Get metadata value as a string by key name
|
||
LLAMA_API int32_t llama_model_meta_val_str(const struct llama_model * model, const char * key, char * buf, size_t buf_size);
|
||
|
||
// Get the number of metadata key/value pairs
|
||
LLAMA_API int32_t llama_model_meta_count(const struct llama_model * model);
|
||
|
||
// Get metadata key name by index
|
||
LLAMA_API int32_t llama_model_meta_key_by_index(const struct llama_model * model, int32_t i, char * buf, size_t buf_size);
|
||
|
||
// Get metadata value as a string by index
|
||
LLAMA_API int32_t llama_model_meta_val_str_by_index(const struct llama_model * model, int32_t i, char * buf, size_t buf_size);
|
||
|
||
// Get a string describing the model type
|
||
LLAMA_API int32_t llama_model_desc(const struct llama_model * model, char * buf, size_t buf_size);
|
||
|
||
// Returns the total size of all the tensors in the model in bytes
|
||
LLAMA_API uint64_t llama_model_size(const struct llama_model * model);
|
||
|
||
// Returns the total number of parameters in the model
|
||
LLAMA_API uint64_t llama_model_n_params(const struct llama_model * model);
|
||
|
||
// Get a llama model tensor
|
||
LLAMA_API struct ggml_tensor * llama_get_model_tensor(struct llama_model * model, const char * name);
|
||
|
||
// Returns true if the model contains an encoder that requires llama_encode() call
|
||
LLAMA_API bool llama_model_has_encoder(const struct llama_model * model);
|
||
|
||
// Returns true if the model contains a decoder that requires llama_decode() call
|
||
LLAMA_API bool llama_model_has_decoder(const struct llama_model * model);
|
||
|
||
// For encoder-decoder models, this function returns id of the token that must be provided
|
||
// to the decoder to start generating output sequence. For other models, it returns -1.
|
||
LLAMA_API llama_token llama_model_decoder_start_token(const struct llama_model * model);
|
||
|
||
// Returns true if the model is recurrent (like Mamba, RWKV, etc.)
|
||
LLAMA_API bool llama_model_is_recurrent(const struct llama_model * model);
|
||
|
||
// Returns 0 on success
|
||
LLAMA_API uint32_t llama_model_quantize(
|
||
const char * fname_inp,
|
||
const char * fname_out,
|
||
const llama_model_quantize_params * params);
|
||
|
||
// Load a LoRA adapter from file
|
||
// The loaded adapter will be associated to the given model, and will be free when the model is deleted
|
||
LLAMA_API struct llama_lora_adapter * llama_lora_adapter_init(
|
||
struct llama_model * model,
|
||
const char * path_lora);
|
||
|
||
// Add a loaded LoRA adapter to given context
|
||
// This will not modify model's weight
|
||
LLAMA_API int32_t llama_lora_adapter_set(
|
||
struct llama_context * ctx,
|
||
struct llama_lora_adapter * adapter,
|
||
float scale);
|
||
|
||
// Remove a specific LoRA adapter from given context
|
||
// Return -1 if the adapter is not present in the context
|
||
LLAMA_API int32_t llama_lora_adapter_remove(
|
||
struct llama_context * ctx,
|
||
struct llama_lora_adapter * adapter);
|
||
|
||
// Remove all LoRA adapters from given context
|
||
LLAMA_API void llama_lora_adapter_clear(
|
||
struct llama_context * ctx);
|
||
|
||
// Manually free a LoRA adapter
|
||
// Note: loaded adapters will be free when the associated model is deleted
|
||
LLAMA_API void llama_lora_adapter_free(struct llama_lora_adapter * adapter);
|
||
|
||
// Apply a loaded control vector to a llama_context, or if data is NULL, clear
|
||
// the currently loaded vector.
|
||
// n_embd should be the size of a single layer's control, and data should point
|
||
// to an n_embd x n_layers buffer starting from layer 1.
|
||
// il_start and il_end are the layer range the vector should apply to (both inclusive)
|
||
// See llama_control_vector_load in common to load a control vector.
|
||
LLAMA_API int32_t llama_control_vector_apply(
|
||
struct llama_context * lctx,
|
||
const float * data,
|
||
size_t len,
|
||
int32_t n_embd,
|
||
int32_t il_start,
|
||
int32_t il_end);
|
||
|
||
//
|
||
// KV cache
|
||
//
|
||
|
||
// Information associated with an individual cell in the KV cache view.
|
||
struct llama_kv_cache_view_cell {
|
||
// The position for this cell. Takes KV cache shifts into account.
|
||
// May be negative if the cell is not populated.
|
||
llama_pos pos;
|
||
};
|
||
|
||
// An updateable view of the KV cache.
|
||
struct llama_kv_cache_view {
|
||
// Number of KV cache cells. This will be the same as the context size.
|
||
int32_t n_cells;
|
||
|
||
// Maximum number of sequences that can exist in a cell. It's not an error
|
||
// if there are more sequences in a cell than this value, however they will
|
||
// not be visible in the view cells_sequences.
|
||
int32_t n_seq_max;
|
||
|
||
// Number of tokens in the cache. For example, if there are two populated
|
||
// cells, the first with 1 sequence id in it and the second with 2 sequence
|
||
// ids then you'll have 3 tokens.
|
||
int32_t token_count;
|
||
|
||
// Number of populated cache cells.
|
||
int32_t used_cells;
|
||
|
||
// Maximum contiguous empty slots in the cache.
|
||
int32_t max_contiguous;
|
||
|
||
// Index to the start of the max_contiguous slot range. Can be negative
|
||
// when cache is full.
|
||
int32_t max_contiguous_idx;
|
||
|
||
// Information for an individual cell.
|
||
struct llama_kv_cache_view_cell * cells;
|
||
|
||
// The sequences for each cell. There will be n_seq_max items per cell.
|
||
llama_seq_id * cells_sequences;
|
||
};
|
||
|
||
// Create an empty KV cache view. (use only for debugging purposes)
|
||
LLAMA_API struct llama_kv_cache_view llama_kv_cache_view_init(const struct llama_context * ctx, int32_t n_seq_max);
|
||
|
||
// Free a KV cache view. (use only for debugging purposes)
|
||
LLAMA_API void llama_kv_cache_view_free(struct llama_kv_cache_view * view);
|
||
|
||
// Update the KV cache view structure with the current state of the KV cache. (use only for debugging purposes)
|
||
LLAMA_API void llama_kv_cache_view_update(const struct llama_context * ctx, struct llama_kv_cache_view * view);
|
||
|
||
// Returns the number of tokens in the KV cache (slow, use only for debug)
|
||
// If a KV cell has multiple sequences assigned to it, it will be counted multiple times
|
||
LLAMA_API int32_t llama_get_kv_cache_token_count(const struct llama_context * ctx);
|
||
|
||
// Returns the number of used KV cells (i.e. have at least one sequence assigned to them)
|
||
LLAMA_API int32_t llama_get_kv_cache_used_cells(const struct llama_context * ctx);
|
||
|
||
// Clear the KV cache - both cell info is erased and KV data is zeroed
|
||
LLAMA_API void llama_kv_cache_clear(
|
||
struct llama_context * ctx);
|
||
|
||
// Removes all tokens that belong to the specified sequence and have positions in [p0, p1)
|
||
// Returns false if a partial sequence cannot be removed. Removing a whole sequence never fails
|
||
// seq_id < 0 : match any sequence
|
||
// p0 < 0 : [0, p1]
|
||
// p1 < 0 : [p0, inf)
|
||
LLAMA_API bool llama_kv_cache_seq_rm(
|
||
struct llama_context * ctx,
|
||
llama_seq_id seq_id,
|
||
llama_pos p0,
|
||
llama_pos p1);
|
||
|
||
// Copy all tokens that belong to the specified sequence to another sequence
|
||
// Note that this does not allocate extra KV cache memory - it simply assigns the tokens to the new sequence
|
||
// p0 < 0 : [0, p1]
|
||
// p1 < 0 : [p0, inf)
|
||
LLAMA_API void llama_kv_cache_seq_cp(
|
||
struct llama_context * ctx,
|
||
llama_seq_id seq_id_src,
|
||
llama_seq_id seq_id_dst,
|
||
llama_pos p0,
|
||
llama_pos p1);
|
||
|
||
// Removes all tokens that do not belong to the specified sequence
|
||
LLAMA_API void llama_kv_cache_seq_keep(
|
||
struct llama_context * ctx,
|
||
llama_seq_id seq_id);
|
||
|
||
// Adds relative position "delta" to all tokens that belong to the specified sequence and have positions in [p0, p1)
|
||
// If the KV cache is RoPEd, the KV data is updated accordingly:
|
||
// - lazily on next llama_decode()
|
||
// - explicitly with llama_kv_cache_update()
|
||
// p0 < 0 : [0, p1]
|
||
// p1 < 0 : [p0, inf)
|
||
LLAMA_API void llama_kv_cache_seq_add(
|
||
struct llama_context * ctx,
|
||
llama_seq_id seq_id,
|
||
llama_pos p0,
|
||
llama_pos p1,
|
||
llama_pos delta);
|
||
|
||
// Integer division of the positions by factor of `d > 1`
|
||
// If the KV cache is RoPEd, the KV data is updated accordingly:
|
||
// - lazily on next llama_decode()
|
||
// - explicitly with llama_kv_cache_update()
|
||
// p0 < 0 : [0, p1]
|
||
// p1 < 0 : [p0, inf)
|
||
LLAMA_API void llama_kv_cache_seq_div(
|
||
struct llama_context * ctx,
|
||
llama_seq_id seq_id,
|
||
llama_pos p0,
|
||
llama_pos p1,
|
||
int d);
|
||
|
||
// Returns the largest position present in the KV cache for the specified sequence
|
||
LLAMA_API llama_pos llama_kv_cache_seq_pos_max(
|
||
struct llama_context * ctx,
|
||
llama_seq_id seq_id);
|
||
|
||
// Defragment the KV cache
|
||
// This will be applied:
|
||
// - lazily on next llama_decode()
|
||
// - explicitly with llama_kv_cache_update()
|
||
LLAMA_API void llama_kv_cache_defrag(struct llama_context * ctx);
|
||
|
||
// Apply the KV cache updates (such as K-shifts, defragmentation, etc.)
|
||
LLAMA_API void llama_kv_cache_update(struct llama_context * ctx);
|
||
|
||
//
|
||
// State / sessions
|
||
//
|
||
|
||
// Returns the *actual* size in bytes of the state
|
||
// (logits, embedding and kv_cache)
|
||
// Only use when saving the state, not when restoring it, otherwise the size may be too small.
|
||
LLAMA_API size_t llama_state_get_size(struct llama_context * ctx);
|
||
LLAMA_API DEPRECATED(size_t llama_get_state_size(struct llama_context * ctx),
|
||
"use llama_state_get_size instead");
|
||
|
||
// Copies the state to the specified destination address.
|
||
// Destination needs to have allocated enough memory.
|
||
// Returns the number of bytes copied
|
||
LLAMA_API size_t llama_state_get_data(
|
||
struct llama_context * ctx,
|
||
uint8_t * dst,
|
||
size_t size);
|
||
LLAMA_API DEPRECATED(size_t llama_copy_state_data(
|
||
struct llama_context * ctx,
|
||
uint8_t * dst),
|
||
"use llama_state_get_data instead");
|
||
|
||
// Set the state reading from the specified address
|
||
// Returns the number of bytes read
|
||
LLAMA_API size_t llama_state_set_data(
|
||
struct llama_context * ctx,
|
||
const uint8_t * src,
|
||
size_t size);
|
||
LLAMA_API DEPRECATED(size_t llama_set_state_data(
|
||
struct llama_context * ctx,
|
||
const uint8_t * src),
|
||
"use llama_state_set_data instead");
|
||
|
||
// Save/load session file
|
||
LLAMA_API bool llama_state_load_file(
|
||
struct llama_context * ctx,
|
||
const char * path_session,
|
||
llama_token * tokens_out,
|
||
size_t n_token_capacity,
|
||
size_t * n_token_count_out);
|
||
LLAMA_API DEPRECATED(bool llama_load_session_file(
|
||
struct llama_context * ctx,
|
||
const char * path_session,
|
||
llama_token * tokens_out,
|
||
size_t n_token_capacity,
|
||
size_t * n_token_count_out),
|
||
"use llama_state_load_file instead");
|
||
|
||
LLAMA_API bool llama_state_save_file(
|
||
struct llama_context * ctx,
|
||
const char * path_session,
|
||
const llama_token * tokens,
|
||
size_t n_token_count);
|
||
LLAMA_API DEPRECATED(bool llama_save_session_file(
|
||
struct llama_context * ctx,
|
||
const char * path_session,
|
||
const llama_token * tokens,
|
||
size_t n_token_count),
|
||
"use llama_state_save_file instead");
|
||
|
||
// Get the exact size needed to copy the KV cache of a single sequence
|
||
LLAMA_API size_t llama_state_seq_get_size(
|
||
struct llama_context * ctx,
|
||
llama_seq_id seq_id);
|
||
|
||
// Copy the KV cache of a single sequence into the specified buffer
|
||
LLAMA_API size_t llama_state_seq_get_data(
|
||
struct llama_context * ctx,
|
||
uint8_t * dst,
|
||
size_t size,
|
||
llama_seq_id seq_id);
|
||
|
||
// Copy the sequence data (originally copied with `llama_state_seq_get_data`) into the specified sequence
|
||
// Returns:
|
||
// - Positive: Ok
|
||
// - Zero: Failed to load
|
||
LLAMA_API size_t llama_state_seq_set_data(
|
||
struct llama_context * ctx,
|
||
const uint8_t * src,
|
||
size_t size,
|
||
llama_seq_id dest_seq_id);
|
||
|
||
LLAMA_API size_t llama_state_seq_save_file(
|
||
struct llama_context * ctx,
|
||
const char * filepath,
|
||
llama_seq_id seq_id,
|
||
const llama_token * tokens,
|
||
size_t n_token_count);
|
||
|
||
LLAMA_API size_t llama_state_seq_load_file(
|
||
struct llama_context * ctx,
|
||
const char * filepath,
|
||
llama_seq_id dest_seq_id,
|
||
llama_token * tokens_out,
|
||
size_t n_token_capacity,
|
||
size_t * n_token_count_out);
|
||
|
||
//
|
||
// Decoding
|
||
//
|
||
|
||
// Return batch for single sequence of tokens starting at pos_0
|
||
//
|
||
// NOTE: this is a helper function to facilitate transition to the new batch API - avoid using it
|
||
//
|
||
LLAMA_API struct llama_batch llama_batch_get_one(
|
||
llama_token * tokens,
|
||
int32_t n_tokens,
|
||
llama_pos pos_0,
|
||
llama_seq_id seq_id);
|
||
|
||
// Allocates a batch of tokens on the heap that can hold a maximum of n_tokens
|
||
// Each token can be assigned up to n_seq_max sequence ids
|
||
// The batch has to be freed with llama_batch_free()
|
||
// If embd != 0, llama_batch.embd will be allocated with size of n_tokens * embd * sizeof(float)
|
||
// Otherwise, llama_batch.token will be allocated to store n_tokens llama_token
|
||
// The rest of the llama_batch members are allocated with size n_tokens
|
||
// All members are left uninitialized
|
||
LLAMA_API struct llama_batch llama_batch_init(
|
||
int32_t n_tokens,
|
||
int32_t embd,
|
||
int32_t n_seq_max);
|
||
|
||
// Frees a batch of tokens allocated with llama_batch_init()
|
||
LLAMA_API void llama_batch_free(struct llama_batch batch);
|
||
|
||
// Processes a batch of tokens with the ecoder part of the encoder-decoder model.
|
||
// Stores the encoder output internally for later use by the decoder cross-attention layers.
|
||
// 0 - success
|
||
// < 0 - error
|
||
LLAMA_API int32_t llama_encode(
|
||
struct llama_context * ctx,
|
||
struct llama_batch batch);
|
||
|
||
// Positive return values does not mean a fatal error, but rather a warning.
|
||
// 0 - success
|
||
// 1 - could not find a KV slot for the batch (try reducing the size of the batch or increase the context)
|
||
// < 0 - error
|
||
LLAMA_API int32_t llama_decode(
|
||
struct llama_context * ctx,
|
||
struct llama_batch batch);
|
||
|
||
// Set the number of threads used for decoding
|
||
// n_threads is the number of threads used for generation (single token)
|
||
// n_threads_batch is the number of threads used for prompt and batch processing (multiple tokens)
|
||
LLAMA_API void llama_set_n_threads(struct llama_context * ctx, int32_t n_threads, int32_t n_threads_batch);
|
||
|
||
// Get the number of threads used for generation of a single token.
|
||
LLAMA_API int32_t llama_n_threads(struct llama_context * ctx);
|
||
|
||
// Get the number of threads used for prompt and batch processing (multiple token).
|
||
LLAMA_API int32_t llama_n_threads_batch(struct llama_context * ctx);
|
||
|
||
// Set whether the model is in embeddings mode or not
|
||
// If true, embeddings will be returned but logits will not
|
||
LLAMA_API void llama_set_embeddings(struct llama_context * ctx, bool embeddings);
|
||
|
||
// Set whether to use causal attention or not
|
||
// If set to true, the model will only attend to the past tokens
|
||
LLAMA_API void llama_set_causal_attn(struct llama_context * ctx, bool causal_attn);
|
||
|
||
// Set abort callback
|
||
LLAMA_API void llama_set_abort_callback(struct llama_context * ctx, ggml_abort_callback abort_callback, void * abort_callback_data);
|
||
|
||
// Wait until all computations are finished
|
||
// This is automatically done when using one of the functions below to obtain the computation results
|
||
// and is not necessary to call it explicitly in most cases
|
||
LLAMA_API void llama_synchronize(struct llama_context * ctx);
|
||
|
||
// Token logits obtained from the last call to llama_decode()
|
||
// The logits for which llama_batch.logits[i] != 0 are stored contiguously
|
||
// in the order they have appeared in the batch.
|
||
// Rows: number of tokens for which llama_batch.logits[i] != 0
|
||
// Cols: n_vocab
|
||
LLAMA_API float * llama_get_logits(struct llama_context * ctx);
|
||
|
||
// Logits for the ith token. For positive indices, Equivalent to:
|
||
// llama_get_logits(ctx) + ctx->output_ids[i]*n_vocab
|
||
// Negative indicies can be used to access logits in reverse order, -1 is the last logit.
|
||
// returns NULL for invalid ids.
|
||
LLAMA_API float * llama_get_logits_ith(struct llama_context * ctx, int32_t i);
|
||
|
||
// Get all output token embeddings.
|
||
// when pooling_type == LLAMA_POOLING_TYPE_NONE or when using a generative model,
|
||
// the embeddings for which llama_batch.logits[i] != 0 are stored contiguously
|
||
// in the order they have appeared in the batch.
|
||
// shape: [n_outputs*n_embd]
|
||
// Otherwise, returns NULL.
|
||
LLAMA_API float * llama_get_embeddings(struct llama_context * ctx);
|
||
|
||
// Get the embeddings for the ith token. For positive indices, Equivalent to:
|
||
// llama_get_embeddings(ctx) + ctx->output_ids[i]*n_embd
|
||
// Negative indicies can be used to access embeddings in reverse order, -1 is the last embedding.
|
||
// shape: [n_embd] (1-dimensional)
|
||
// returns NULL for invalid ids.
|
||
LLAMA_API float * llama_get_embeddings_ith(struct llama_context * ctx, int32_t i);
|
||
|
||
// Get the embeddings for a sequence id
|
||
// Returns NULL if pooling_type is LLAMA_POOLING_TYPE_NONE
|
||
// when pooling_type == LLAMA_POOLING_TYPE_RANK, returns float[1] with the rank of the sequence
|
||
// otherwise: float[n_embd] (1-dimensional)
|
||
LLAMA_API float * llama_get_embeddings_seq(struct llama_context * ctx, llama_seq_id seq_id);
|
||
|
||
//
|
||
// Vocab
|
||
//
|
||
|
||
LLAMA_API const char * llama_token_get_text(const struct llama_model * model, llama_token token);
|
||
|
||
LLAMA_API float llama_token_get_score(const struct llama_model * model, llama_token token);
|
||
|
||
LLAMA_API enum llama_token_attr llama_token_get_attr(const struct llama_model * model, llama_token token);
|
||
|
||
// Check if the token is supposed to end generation (end-of-generation, eg. EOS, EOT, etc.)
|
||
LLAMA_API bool llama_token_is_eog(const struct llama_model * model, llama_token token);
|
||
|
||
// Identify if Token Id is a control token or a render-able token
|
||
LLAMA_API bool llama_token_is_control(const struct llama_model * model, llama_token token);
|
||
|
||
// Special tokens
|
||
LLAMA_API llama_token llama_token_bos(const struct llama_model * model); // beginning-of-sentence
|
||
LLAMA_API llama_token llama_token_eos(const struct llama_model * model); // end-of-sentence
|
||
LLAMA_API llama_token llama_token_cls(const struct llama_model * model); // classification
|
||
LLAMA_API llama_token llama_token_sep(const struct llama_model * model); // sentence separator
|
||
LLAMA_API llama_token llama_token_nl (const struct llama_model * model); // next-line
|
||
LLAMA_API llama_token llama_token_pad(const struct llama_model * model); // padding
|
||
|
||
LLAMA_API bool llama_add_bos_token(const struct llama_model * model);
|
||
LLAMA_API bool llama_add_eos_token(const struct llama_model * model);
|
||
|
||
// Codellama infill tokens
|
||
LLAMA_API llama_token llama_token_prefix(const struct llama_model * model); // Beginning of infill prefix
|
||
LLAMA_API llama_token llama_token_middle(const struct llama_model * model); // Beginning of infill middle
|
||
LLAMA_API llama_token llama_token_suffix(const struct llama_model * model); // Beginning of infill suffix
|
||
LLAMA_API llama_token llama_token_eot (const struct llama_model * model); // End of infill middle
|
||
|
||
//
|
||
// Tokenization
|
||
//
|
||
// The API is thread-safe.
|
||
//
|
||
|
||
/// @details Convert the provided text into tokens.
|
||
/// @param tokens The tokens pointer must be large enough to hold the resulting tokens.
|
||
/// @return Returns the number of tokens on success, no more than n_tokens_max
|
||
/// @return Returns a negative number on failure - the number of tokens that would have been returned
|
||
/// @param add_special Allow to add BOS and EOS tokens if model is configured to do so.
|
||
/// @param parse_special Allow tokenizing special and/or control tokens which otherwise are not exposed and treated
|
||
/// as plaintext. Does not insert a leading space.
|
||
LLAMA_API int32_t llama_tokenize(
|
||
const struct llama_model * model,
|
||
const char * text,
|
||
int32_t text_len,
|
||
llama_token * tokens,
|
||
int32_t n_tokens_max,
|
||
bool add_special,
|
||
bool parse_special);
|
||
|
||
// Token Id -> Piece.
|
||
// Uses the vocabulary in the provided context.
|
||
// Does not write null terminator to the buffer.
|
||
// User can skip up to 'lstrip' leading spaces before copying (useful when encoding/decoding multiple tokens with 'add_space_prefix')
|
||
// @param special If true, special tokens are rendered in the output.
|
||
LLAMA_API int32_t llama_token_to_piece(
|
||
const struct llama_model * model,
|
||
llama_token token,
|
||
char * buf,
|
||
int32_t length,
|
||
int32_t lstrip,
|
||
bool special);
|
||
|
||
/// @details Convert the provided tokens into text (inverse of llama_tokenize()).
|
||
/// @param text The char pointer must be large enough to hold the resulting text.
|
||
/// @return Returns the number of chars/bytes on success, no more than text_len_max.
|
||
/// @return Returns a negative number on failure - the number of chars/bytes that would have been returned.
|
||
/// @param remove_special Allow to remove BOS and EOS tokens if model is configured to do so.
|
||
/// @param unparse_special If true, special tokens are rendered in the output.
|
||
LLAMA_API int32_t llama_detokenize(
|
||
const struct llama_model * model,
|
||
const llama_token * tokens,
|
||
int32_t n_tokens,
|
||
char * text,
|
||
int32_t text_len_max,
|
||
bool remove_special,
|
||
bool unparse_special);
|
||
|
||
//
|
||
// Chat templates
|
||
//
|
||
|
||
/// Apply chat template. Inspired by hf apply_chat_template() on python.
|
||
/// Both "model" and "custom_template" are optional, but at least one is required. "custom_template" has higher precedence than "model"
|
||
/// NOTE: This function does not use a jinja parser. It only support a pre-defined list of template. See more: https://github.com/ggerganov/llama.cpp/wiki/Templates-supported-by-llama_chat_apply_template
|
||
/// @param tmpl A Jinja template to use for this chat. If this is nullptr, the model’s default chat template will be used instead.
|
||
/// @param chat Pointer to a list of multiple llama_chat_message
|
||
/// @param n_msg Number of llama_chat_message in this chat
|
||
/// @param add_ass Whether to end the prompt with the token(s) that indicate the start of an assistant message.
|
||
/// @param buf A buffer to hold the output formatted prompt. The recommended alloc size is 2 * (total number of characters of all messages)
|
||
/// @param length The size of the allocated buffer
|
||
/// @return The total number of bytes of the formatted prompt. If is it larger than the size of buffer, you may need to re-alloc it and then re-apply the template.
|
||
LLAMA_API int32_t llama_chat_apply_template(
|
||
const struct llama_model * model,
|
||
const char * tmpl,
|
||
const struct llama_chat_message * chat,
|
||
size_t n_msg,
|
||
bool add_ass,
|
||
char * buf,
|
||
int32_t length);
|
||
|
||
//
|
||
// Sampling API
|
||
//
|
||
// Sample usage:
|
||
//
|
||
// // prepare the sampling chain at the start
|
||
// auto sparams = llama_sampler_chain_default_params();
|
||
//
|
||
// llama_sampler * smpl = llama_sampler_chain_init(sparams);
|
||
//
|
||
// llama_sampler_chain_add(smpl, llama_sampler_init_top_k(50));
|
||
// llama_sampler_chain_add(smpl, llama_sampler_init_top_p(0.9, 1));
|
||
// llama_sampler_chain_add(smpl, llama_sampler_init_temp (0.8));
|
||
//
|
||
// // typically, the chain should end with a sampler such as "greedy", "dist" or "mirostat"
|
||
// // this sampler will be responsible to select the actual token
|
||
// llama_sampler_chain_add(smpl, llama_sampler_init_dist(seed));
|
||
//
|
||
// ...
|
||
//
|
||
// // decoding loop:
|
||
// while (...) {
|
||
// ...
|
||
//
|
||
// llama_decode(ctx, batch);
|
||
//
|
||
// // sample from the logits of the last token in the batch
|
||
// const llama_token id = llama_sampler_sample(smpl, ctx, -1);
|
||
//
|
||
// // accepting the token updates the internal state of certain samplers (e.g. grammar, repetition, etc.)
|
||
// llama_sampler_accept(smpl, id);
|
||
// ...
|
||
// }
|
||
//
|
||
// llama_sampler_free(smpl);
|
||
//
|
||
// TODO: In the future, llama_sampler will be utilized to offload the sampling to the backends (e.g. GPU).
|
||
// TODO: in the future, the entire sampling API that uses llama_model should start using llama_vocab
|
||
//
|
||
|
||
typedef void * llama_sampler_context_t;
|
||
|
||
// user code can implement the interface below in order to create custom llama_sampler
|
||
struct llama_sampler_i {
|
||
const char * (*name) (const struct llama_sampler * smpl); // can be NULL
|
||
void (*accept)( struct llama_sampler * smpl, llama_token token); // can be NULL
|
||
void (*apply) ( struct llama_sampler * smpl, llama_token_data_array * cur_p); // required
|
||
void (*reset) ( struct llama_sampler * smpl); // can be NULL
|
||
struct llama_sampler * (*clone) (const struct llama_sampler * smpl); // can be NULL if ctx is NULL
|
||
void (*free) ( struct llama_sampler * smpl); // can be NULL if ctx is NULL
|
||
|
||
// TODO: API for internal libllama usage for appending the sampling to an existing ggml_cgraph
|
||
//void (*apply_ggml) (struct llama_sampler * smpl, ...);
|
||
};
|
||
|
||
struct llama_sampler {
|
||
struct llama_sampler_i * iface;
|
||
llama_sampler_context_t ctx;
|
||
};
|
||
|
||
// mirror of llama_sampler_i:
|
||
LLAMA_API const char * llama_sampler_name (const struct llama_sampler * smpl);
|
||
LLAMA_API void llama_sampler_accept( struct llama_sampler * smpl, llama_token token);
|
||
LLAMA_API void llama_sampler_apply ( struct llama_sampler * smpl, llama_token_data_array * cur_p);
|
||
LLAMA_API void llama_sampler_reset ( struct llama_sampler * smpl);
|
||
LLAMA_API struct llama_sampler * llama_sampler_clone (const struct llama_sampler * smpl);
|
||
// important: do not free if the sampler has been added to a llama_sampler_chain (via llama_sampler_chain_add)
|
||
LLAMA_API void llama_sampler_free ( struct llama_sampler * smpl);
|
||
|
||
// llama_sampler_chain
|
||
// a type of llama_sampler that can chain multiple samplers one after another
|
||
|
||
LLAMA_API struct llama_sampler * llama_sampler_chain_init(struct llama_sampler_chain_params params);
|
||
|
||
// important: takes ownership of the sampler object and will free it when llama_sampler_free is called
|
||
LLAMA_API void llama_sampler_chain_add( struct llama_sampler * chain, struct llama_sampler * smpl);
|
||
LLAMA_API struct llama_sampler * llama_sampler_chain_get(const struct llama_sampler * chain, int32_t i);
|
||
LLAMA_API int llama_sampler_chain_n (const struct llama_sampler * chain);
|
||
|
||
// after removing a sampler, the chain will no longer own it, and it will not be freed when the chain is freed
|
||
LLAMA_API struct llama_sampler * llama_sampler_chain_remove( struct llama_sampler * chain, int32_t i);
|
||
|
||
// available samplers:
|
||
|
||
LLAMA_API struct llama_sampler * llama_sampler_init_greedy (void);
|
||
LLAMA_API struct llama_sampler * llama_sampler_init_dist (uint32_t seed);
|
||
|
||
/// @details Sorts candidate tokens by their logits in descending order and calculate probabilities based on logits.
|
||
/// NOTE: Avoid using on the full vocabulary as the sorting can become slow. For example, apply top-k or top-p sampling first.
|
||
LLAMA_API struct llama_sampler * llama_sampler_init_softmax (void);
|
||
|
||
/// @details Top-K sampling described in academic paper "The Curious Case of Neural Text Degeneration" https://arxiv.org/abs/1904.09751
|
||
LLAMA_API struct llama_sampler * llama_sampler_init_top_k (int32_t k);
|
||
|
||
/// @details Nucleus sampling described in academic paper "The Curious Case of Neural Text Degeneration" https://arxiv.org/abs/1904.09751
|
||
LLAMA_API struct llama_sampler * llama_sampler_init_top_p (float p, size_t min_keep);
|
||
|
||
/// @details Minimum P sampling as described in https://github.com/ggerganov/llama.cpp/pull/3841
|
||
LLAMA_API struct llama_sampler * llama_sampler_init_min_p (float p, size_t min_keep);
|
||
|
||
/// @details Tail Free Sampling described in https://www.trentonbricken.com/Tail-Free-Sampling/.
|
||
LLAMA_API struct llama_sampler * llama_sampler_init_tail_free (float z, size_t min_keep);
|
||
|
||
/// @details Locally Typical Sampling implementation described in the paper https://arxiv.org/abs/2202.00666.
|
||
LLAMA_API struct llama_sampler * llama_sampler_init_typical (float p, size_t min_keep);
|
||
LLAMA_API struct llama_sampler * llama_sampler_init_temp (float t);
|
||
|
||
/// @details Dynamic temperature implementation (a.k.a. entropy) described in the paper https://arxiv.org/abs/2309.02772.
|
||
LLAMA_API struct llama_sampler * llama_sampler_init_temp_ext (float t, float delta, float exponent);
|
||
|
||
/// @details Mirostat 1.0 algorithm described in the paper https://arxiv.org/abs/2007.14966. Uses tokens instead of words.
|
||
/// @param candidates A vector of `llama_token_data` containing the candidate tokens, their probabilities (p), and log-odds (logit) for the current position in the generated text.
|
||
/// @param tau The target cross-entropy (or surprise) value you want to achieve for the generated text. A higher value corresponds to more surprising or less predictable text, while a lower value corresponds to less surprising or more predictable text.
|
||
/// @param eta The learning rate used to update `mu` based on the error between the target and observed surprisal of the sampled word. A larger learning rate will cause `mu` to be updated more quickly, while a smaller learning rate will result in slower updates.
|
||
/// @param m The number of tokens considered in the estimation of `s_hat`. This is an arbitrary value that is used to calculate `s_hat`, which in turn helps to calculate the value of `k`. In the paper, they use `m = 100`, but you can experiment with different values to see how it affects the performance of the algorithm.
|
||
/// @param mu Maximum cross-entropy. This value is initialized to be twice the target cross-entropy (`2 * tau`) and is updated in the algorithm based on the error between the target and observed surprisal.
|
||
LLAMA_API struct llama_sampler * llama_sampler_init_mirostat(
|
||
int32_t n_vocab,
|
||
uint32_t seed,
|
||
float tau,
|
||
float eta,
|
||
int32_t m);
|
||
|
||
/// @details Mirostat 2.0 algorithm described in the paper https://arxiv.org/abs/2007.14966. Uses tokens instead of words.
|
||
/// @param candidates A vector of `llama_token_data` containing the candidate tokens, their probabilities (p), and log-odds (logit) for the current position in the generated text.
|
||
/// @param tau The target cross-entropy (or surprise) value you want to achieve for the generated text. A higher value corresponds to more surprising or less predictable text, while a lower value corresponds to less surprising or more predictable text.
|
||
/// @param eta The learning rate used to update `mu` based on the error between the target and observed surprisal of the sampled word. A larger learning rate will cause `mu` to be updated more quickly, while a smaller learning rate will result in slower updates.
|
||
/// @param mu Maximum cross-entropy. This value is initialized to be twice the target cross-entropy (`2 * tau`) and is updated in the algorithm based on the error between the target and observed surprisal.
|
||
LLAMA_API struct llama_sampler * llama_sampler_init_mirostat_v2(
|
||
uint32_t seed,
|
||
float tau,
|
||
float eta);
|
||
|
||
LLAMA_API struct llama_sampler * llama_sampler_init_grammar(
|
||
const struct llama_model * model,
|
||
const char * grammar_str,
|
||
const char * grammar_root);
|
||
|
||
LLAMA_API struct llama_sampler * llama_sampler_init_penalties(
|
||
int32_t n_vocab, // llama_n_vocab()
|
||
llama_token special_eos_id, // llama_token_eos()
|
||
llama_token linefeed_id, // llama_token_nl()
|
||
int32_t penalty_last_n, // last n tokens to penalize (0 = disable penalty, -1 = context size)
|
||
float penalty_repeat, // 1.0 = disabled
|
||
float penalty_freq, // 0.0 = disabled
|
||
float penalty_present, // 0.0 = disabled
|
||
bool penalize_nl, // consider newlines as a repeatable token
|
||
bool ignore_eos); // ignore the end-of-sequence token
|
||
|
||
LLAMA_API struct llama_sampler * llama_sampler_init_logit_bias(
|
||
int32_t n_vocab,
|
||
int32_t n_logit_bias,
|
||
const llama_logit_bias * logit_bias);
|
||
|
||
|
||
// Returns the seed used by the sampler if applicable, LLAMA_DEFAULT_SEED otherwise
|
||
LLAMA_API uint32_t llama_sampler_get_seed(const struct llama_sampler * smpl);
|
||
|
||
/// @details Sample and accept a token from the idx-th output of the last evaluation
|
||
//
|
||
// Shorthand for:
|
||
// const auto * logits = llama_get_logits_ith(ctx, idx);
|
||
// llama_token_data_array cur_p = { ... init from logits ... };
|
||
// llama_sampler_apply(smpl, &cur_p);
|
||
// auto token = cur_p.data[cur_p.selected].id;
|
||
// llama_sampler_accept(smpl, token);
|
||
// return token;
|
||
// Returns the sampled token
|
||
LLAMA_API llama_token llama_sampler_sample(struct llama_sampler * smpl, struct llama_context * ctx, int32_t idx);
|
||
|
||
// TODO: extend in the future
|
||
//LLAMA_API void llama_decode_with_sampler(struct llama_context * ctx, struct llama_sampler * smpl, struct llama_batch batch, ...);
|
||
|
||
//
|
||
// Model split
|
||
//
|
||
|
||
/// @details Build a split GGUF final path for this chunk.
|
||
/// llama_split_path(split_path, sizeof(split_path), "/models/ggml-model-q4_0", 2, 4) => split_path = "/models/ggml-model-q4_0-00002-of-00004.gguf"
|
||
// Returns the split_path length.
|
||
LLAMA_API int llama_split_path(char * split_path, size_t maxlen, const char * path_prefix, int split_no, int split_count);
|
||
|
||
/// @details Extract the path prefix from the split_path if and only if the split_no and split_count match.
|
||
/// llama_split_prefix(split_prefix, 64, "/models/ggml-model-q4_0-00002-of-00004.gguf", 2, 4) => split_prefix = "/models/ggml-model-q4_0"
|
||
// Returns the split_prefix length.
|
||
LLAMA_API int llama_split_prefix(char * split_prefix, size_t maxlen, const char * split_path, int split_no, int split_count);
|
||
|
||
// Print system information
|
||
LLAMA_API const char * llama_print_system_info(void);
|
||
|
||
// Set callback for all future logging events.
|
||
// If this is not called, or NULL is supplied, everything is output on stderr.
|
||
LLAMA_API void llama_log_set(ggml_log_callback log_callback, void * user_data);
|
||
|
||
//
|
||
// Performance utils
|
||
//
|
||
// NOTE: Used by llama.cpp examples, avoid using in third-party apps. Instead, do your own performance measurements.
|
||
//
|
||
|
||
struct llama_perf_context_data {
|
||
double t_start_ms;
|
||
double t_load_ms;
|
||
double t_p_eval_ms;
|
||
double t_eval_ms;
|
||
|
||
int32_t n_p_eval;
|
||
int32_t n_eval;
|
||
};
|
||
|
||
struct llama_perf_sampler_data {
|
||
double t_sample_ms;
|
||
|
||
int32_t n_sample;
|
||
};
|
||
|
||
LLAMA_API struct llama_perf_context_data llama_perf_context (const struct llama_context * ctx);
|
||
LLAMA_API void llama_perf_context_print(const struct llama_context * ctx);
|
||
LLAMA_API void llama_perf_context_reset( struct llama_context * ctx);
|
||
|
||
// NOTE: the following work only with samplers constructed via llama_sampler_chain_init
|
||
LLAMA_API struct llama_perf_sampler_data llama_perf_sampler (const struct llama_sampler * chain);
|
||
LLAMA_API void llama_perf_sampler_print(const struct llama_sampler * chain);
|
||
LLAMA_API void llama_perf_sampler_reset( struct llama_sampler * chain);
|
||
|
||
LLAMA_API void llama_perf_dump_yaml(FILE * stream, const struct llama_context * ctx);
|
||
|
||
#ifdef __cplusplus
|
||
}
|
||
#endif
|
||
|
||
#endif // LLAMA_H
|