#ifndef LLAMA_H #define LLAMA_H #include "ggml.h" #ifdef GGML_USE_CUBLAS #include "ggml-cuda.h" #define LLAMA_MAX_DEVICES GGML_CUDA_MAX_DEVICES #else #define LLAMA_MAX_DEVICES 1 #endif // GGML_USE_CUBLAS #include #include #include #include #ifdef LLAMA_SHARED # if defined(_WIN32) && !defined(__MINGW32__) # ifdef LLAMA_BUILD # define LLAMA_API __declspec(dllexport) # else # define LLAMA_API __declspec(dllimport) # endif # else # define LLAMA_API __attribute__ ((visibility ("default"))) # endif #else # define LLAMA_API #endif #ifdef __GNUC__ # define DEPRECATED(func, hint) func __attribute__((deprecated(hint))) #elif defined(_MSC_VER) # define DEPRECATED(func, hint) __declspec(deprecated(hint)) func #else # define DEPRECATED(func, hint) func #endif #define LLAMA_DEFAULT_SEED 0xFFFFFFFF #define LLAMA_MAX_RNG_STATE (64*1024) #define LLAMA_FILE_MAGIC_GGLA 0x67676c61u // 'ggla' #define LLAMA_FILE_MAGIC_GGSN 0x6767736eu // 'ggsn' #define LLAMA_SESSION_MAGIC LLAMA_FILE_MAGIC_GGSN #define LLAMA_SESSION_VERSION 3 #if defined(GGML_USE_CUBLAS) || defined(GGML_USE_CLBLAST) || defined(GGML_USE_METAL) // Defined when llama.cpp is compiled with support for offloading model layers to GPU. #define LLAMA_SUPPORTS_GPU_OFFLOAD #endif #ifdef __cplusplus extern "C" { #endif // // C interface // // TODO: show sample usage // struct llama_model; struct llama_context; typedef int32_t llama_pos; typedef int32_t llama_token; typedef int32_t llama_seq_id; enum llama_vocab_type { LLAMA_VOCAB_TYPE_SPM = 0, // SentencePiece LLAMA_VOCAB_TYPE_BPE = 1, // Byte Pair Encoding }; enum llama_token_type { LLAMA_TOKEN_TYPE_UNDEFINED = 0, LLAMA_TOKEN_TYPE_NORMAL = 1, LLAMA_TOKEN_TYPE_UNKNOWN = 2, LLAMA_TOKEN_TYPE_CONTROL = 3, LLAMA_TOKEN_TYPE_USER_DEFINED = 4, LLAMA_TOKEN_TYPE_UNUSED = 5, LLAMA_TOKEN_TYPE_BYTE = 6, }; // model file types enum llama_ftype { LLAMA_FTYPE_ALL_F32 = 0, LLAMA_FTYPE_MOSTLY_F16 = 1, // except 1d tensors LLAMA_FTYPE_MOSTLY_Q4_0 = 2, // except 1d tensors LLAMA_FTYPE_MOSTLY_Q4_1 = 3, // except 1d tensors LLAMA_FTYPE_MOSTLY_Q4_1_SOME_F16 = 4, // tok_embeddings.weight and output.weight are F16 // LLAMA_FTYPE_MOSTLY_Q4_2 = 5, // support has been removed // LLAMA_FTYPE_MOSTLY_Q4_3 = 6, // support has been removed LLAMA_FTYPE_MOSTLY_Q8_0 = 7, // except 1d tensors LLAMA_FTYPE_MOSTLY_Q5_0 = 8, // except 1d tensors LLAMA_FTYPE_MOSTLY_Q5_1 = 9, // except 1d tensors LLAMA_FTYPE_MOSTLY_Q2_K = 10, // except 1d tensors LLAMA_FTYPE_MOSTLY_Q3_K_S = 11, // except 1d tensors LLAMA_FTYPE_MOSTLY_Q3_K_M = 12, // except 1d tensors LLAMA_FTYPE_MOSTLY_Q3_K_L = 13, // except 1d tensors LLAMA_FTYPE_MOSTLY_Q4_K_S = 14, // except 1d tensors LLAMA_FTYPE_MOSTLY_Q4_K_M = 15, // except 1d tensors LLAMA_FTYPE_MOSTLY_Q5_K_S = 16, // except 1d tensors LLAMA_FTYPE_MOSTLY_Q5_K_M = 17, // except 1d tensors LLAMA_FTYPE_MOSTLY_Q6_K = 18, // except 1d tensors LLAMA_FTYPE_GUESSED = 1024, // not specified in the model file }; enum llama_rope_scaling_type { LLAMA_ROPE_SCALING_UNSPECIFIED = -1, LLAMA_ROPE_SCALING_NONE = 0, LLAMA_ROPE_SCALING_LINEAR = 1, LLAMA_ROPE_SCALING_YARN = 2, LLAMA_ROPE_SCALING_MAX_VALUE = LLAMA_ROPE_SCALING_YARN, }; typedef struct llama_token_data { llama_token id; // token id float logit; // log-odds of the token float p; // probability of the token } llama_token_data; typedef struct llama_token_data_array { llama_token_data * data; size_t size; bool sorted; } llama_token_data_array; typedef bool (*llama_progress_callback)(float progress, void *ctx); // Input data for llama_decode // A llama_batch object can contain input about one or many sequences // The provided arrays (i.e. token, embd, pos, etc.) must have size of n_tokens // // - token : the token ids of the input (used when embd is NULL) // - embd : token embeddings (i.e. float vector of size n_embd) (used when token is NULL) // - pos : the positions of the respective token in the sequence // - seq_id : the sequence to which the respective token belongs // - logits : if zero, the logits for the respective token will not be output // typedef struct llama_batch { int32_t n_tokens; llama_token * token; float * embd; llama_pos * pos; int32_t * n_seq_id; llama_seq_id ** seq_id; int8_t * logits; // NOTE: helpers for smooth API transition - can be deprecated in the future // for future-proof code, use the above fields instead and ignore everything below // // pos[i] = all_pos_0 + i*all_pos_1 // llama_pos all_pos_0; // used if pos == NULL llama_pos all_pos_1; // used if pos == NULL llama_seq_id all_seq_id; // used if seq_id == NULL } llama_batch; enum llama_model_kv_override_type { LLAMA_KV_OVERRIDE_INT, LLAMA_KV_OVERRIDE_FLOAT, LLAMA_KV_OVERRIDE_BOOL, }; struct llama_model_kv_override { char key[128]; enum llama_model_kv_override_type tag; union { int64_t int_value; double float_value; bool bool_value; }; }; struct llama_model_params { int32_t n_gpu_layers; // number of layers to store in VRAM int32_t main_gpu; // the GPU that is used for scratch and small tensors const float * tensor_split; // how to split layers across multiple GPUs (size: LLAMA_MAX_DEVICES) // Called with a progress value between 0.0 and 1.0. Pass NULL to disable. // If the provided progress_callback returns true, model loading continues. // If it returns false, model loading is immediately aborted. llama_progress_callback progress_callback; // context pointer passed to the progress callback void * progress_callback_user_data; // override key-value pairs of the model meta data const struct llama_model_kv_override * kv_overrides; // Keep the booleans together to avoid misalignment during copy-by-value. bool vocab_only; // only load the vocabulary, no weights bool use_mmap; // use mmap if possible bool use_mlock; // force system to keep model in RAM }; struct llama_context_params { uint32_t seed; // RNG seed, -1 for random uint32_t n_ctx; // text context, 0 = from model uint32_t n_batch; // prompt processing maximum batch size uint32_t n_threads; // number of threads to use for generation uint32_t n_threads_batch; // number of threads to use for batch processing int8_t rope_scaling_type; // RoPE scaling type, from `enum llama_rope_scaling_type` // ref: https://github.com/ggerganov/llama.cpp/pull/2054 float rope_freq_base; // RoPE base frequency, 0 = from model float rope_freq_scale; // RoPE frequency scaling factor, 0 = from model float yarn_ext_factor; // YaRN extrapolation mix factor, negative = from model float yarn_attn_factor; // YaRN magnitude scaling factor float yarn_beta_fast; // YaRN low correction dim float yarn_beta_slow; // YaRN high correction dim uint32_t yarn_orig_ctx; // YaRN original context size enum ggml_type type_k; // data type for K cache enum ggml_type type_v; // data type for V cache // Keep the booleans together to avoid misalignment during copy-by-value. bool mul_mat_q; // if true, use experimental mul_mat_q kernels (DEPRECATED - always true) bool logits_all; // the llama_eval() call computes all logits, not just the last one (DEPRECATED - set llama_batch.logits instead) bool embedding; // embedding mode only bool offload_kqv; // whether to offload the KQV ops (including the KV cache) to GPU }; // model quantization parameters typedef struct llama_model_quantize_params { int32_t nthread; // number of threads to use for quantizing, if <=0 will use std::thread::hardware_concurrency() enum llama_ftype ftype; // quantize to this llama_ftype bool allow_requantize; // allow quantizing non-f32/f16 tensors bool quantize_output_tensor; // quantize output.weight bool only_copy; // only copy tensors - ftype, allow_requantize and quantize_output_tensor are ignored bool pure; // disable k-quant mixtures and quantize all tensors to the same type } llama_model_quantize_params; // grammar types struct llama_grammar; // grammar element type enum llama_gretype { // end of rule definition LLAMA_GRETYPE_END = 0, // start of alternate definition for rule LLAMA_GRETYPE_ALT = 1, // non-terminal element: reference to rule LLAMA_GRETYPE_RULE_REF = 2, // terminal element: character (code point) LLAMA_GRETYPE_CHAR = 3, // inverse char(s) ([^a], [^a-b] [^abc]) LLAMA_GRETYPE_CHAR_NOT = 4, // modifies a preceding LLAMA_GRETYPE_CHAR or LLAMA_GRETYPE_CHAR_ALT to // be an inclusive range ([a-z]) LLAMA_GRETYPE_CHAR_RNG_UPPER = 5, // modifies a preceding LLAMA_GRETYPE_CHAR or // LLAMA_GRETYPE_CHAR_RNG_UPPER to add an alternate char to match ([ab], [a-zA]) LLAMA_GRETYPE_CHAR_ALT = 6, }; typedef struct llama_grammar_element { enum llama_gretype type; uint32_t value; // Unicode code point or rule ID } llama_grammar_element; // performance timing information struct llama_timings { double t_start_ms; double t_end_ms; double t_load_ms; double t_sample_ms; double t_p_eval_ms; double t_eval_ms; int32_t n_sample; int32_t n_p_eval; int32_t n_eval; }; // Helpers for getting default parameters 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_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(bool numa); // 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); LLAMA_API struct llama_context * llama_new_context_with_model( struct llama_model * model, struct llama_context_params params); // Frees all allocated memory LLAMA_API void llama_free(struct llama_context * ctx); LLAMA_API int64_t llama_time_us(void); LLAMA_API int32_t llama_max_devices(void); LLAMA_API bool llama_mmap_supported (void); LLAMA_API bool llama_mlock_supported(void); LLAMA_API const struct llama_model * llama_get_model(const struct llama_context * ctx); 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 enum llama_vocab_type llama_vocab_type(const struct llama_model * model); 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); // 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 0 on success LLAMA_API uint32_t llama_model_quantize( const char * fname_inp, const char * fname_out, const llama_model_quantize_params * params); // Apply a LoRA adapter to a loaded model // path_base_model is the path to a higher quality model to use as a base for // the layers modified by the adapter. Can be NULL to use the current loaded model. // The model needs to be reloaded before applying a new adapter, otherwise the adapter // will be applied on top of the previous one // Returns 0 on success LLAMA_API DEPRECATED(int32_t llama_apply_lora_from_file( struct llama_context * ctx, const char * path_lora, float scale, const char * path_base_model, int32_t n_threads), "use llama_model_apply_lora_from_file instead"); LLAMA_API int32_t llama_model_apply_lora_from_file( const struct llama_model * model, const char * path_lora, float scale, const char * path_base_model, int32_t n_threads); // // 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_max_seq; // 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_max_seq 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_max_seq); // 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 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) // seq_id < 0 : match any sequence // p0 < 0 : [0, p1] // p1 < 0 : [p0, inf) LLAMA_API void 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 // p0 < 0 : [0, p1] // p1 < 0 : [p0, inf) LLAMA_API void llama_kv_cache_seq_shift( 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 // 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); // // State / sessions // // Returns the maximum size in bytes of the state (rng, logits, embedding // and kv_cache) - will often be smaller after compacting tokens LLAMA_API size_t llama_get_state_size(const struct llama_context * ctx); // 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_copy_state_data( struct llama_context * ctx, uint8_t * dst); // Set the state reading from the specified address // Returns the number of bytes read LLAMA_API size_t llama_set_state_data( struct llama_context * ctx, uint8_t * src); // Save/load session file LLAMA_API 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); LLAMA_API bool llama_save_session_file( struct llama_context * ctx, const char * path_session, const llama_token * tokens, size_t n_token_count); // // Decoding // // Run the llama inference to obtain the logits and probabilities for the next token(s). // tokens + n_tokens is the provided batch of new tokens to process // n_past is the number of tokens to use from previous eval calls // Returns 0 on success // DEPRECATED: use llama_decode() instead LLAMA_API DEPRECATED(int llama_eval( struct llama_context * ctx, llama_token * tokens, int32_t n_tokens, int32_t n_past), "use llama_decode() instead"); // Same as llama_eval, but use float matrix input directly. // DEPRECATED: use llama_decode() instead LLAMA_API DEPRECATED(int llama_eval_embd( struct llama_context * ctx, float * embd, int32_t n_tokens, int32_t n_past), "use llama_decode() instead"); // 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); // 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, uint32_t n_threads, uint32_t n_threads_batch); // Token logits obtained from the last call to llama_eval() // The logits for the last token are stored in the last row // Logits for which llama_batch.logits[i] == 0 are undefined // Rows: n_tokens provided with llama_batch // Cols: n_vocab LLAMA_API float * llama_get_logits(struct llama_context * ctx); // Logits for the ith token. Equivalent to: // llama_get_logits(ctx) + i*n_vocab LLAMA_API float * llama_get_logits_ith(struct llama_context * ctx, int32_t i); // Get the embeddings for the input // shape: [n_embd] (1-dimensional) LLAMA_API float * llama_get_embeddings(struct llama_context * ctx); // // 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_type llama_token_get_type(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_nl (const struct llama_model * model); // next-line // Returns -1 if unknown, 1 for true or 0 for false. LLAMA_API int32_t llama_add_bos_token(const struct llama_model * model); // Returns -1 if unknown, 1 for true or 0 for false. LLAMA_API int32_t 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 // /// @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_max_tokens /// @return Returns a negative number on failure - the number of tokens that would have been returned /// @param 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_max_tokens, bool add_bos, bool special); // Token Id -> Piece. // Uses the vocabulary in the provided context. // Does not write null terminator to the buffer. // User code is responsible to remove the leading whitespace of the first non-BOS token when decoding multiple tokens. LLAMA_API int32_t llama_token_to_piece( const struct llama_model * model, llama_token token, char * buf, int32_t length); // // Grammar // LLAMA_API struct llama_grammar * llama_grammar_init( const llama_grammar_element ** rules, size_t n_rules, size_t start_rule_index); LLAMA_API void llama_grammar_free(struct llama_grammar * grammar); LLAMA_API struct llama_grammar * llama_grammar_copy(const struct llama_grammar * grammar); // // Sampling functions // // Sets the current rng seed. LLAMA_API void llama_set_rng_seed(struct llama_context * ctx, uint32_t seed); /// @details Repetition penalty described in CTRL academic paper https://arxiv.org/abs/1909.05858, with negative logit fix. /// @details Frequency and presence penalties described in OpenAI API https://platform.openai.com/docs/api-reference/parameter-details. LLAMA_API void llama_sample_repetition_penalties( struct llama_context * ctx, llama_token_data_array * candidates, const llama_token * last_tokens, size_t penalty_last_n, float penalty_repeat, float penalty_freq, float penalty_present); /// @details Apply classifier-free guidance to the logits as described in academic paper "Stay on topic with Classifier-Free Guidance" https://arxiv.org/abs/2306.17806 /// @param candidates A vector of `llama_token_data` containing the candidate tokens, the logits must be directly extracted from the original generation context without being sorted. /// @params guidance_ctx A separate context from the same model. Other than a negative prompt at the beginning, it should have all generated and user input tokens copied from the main context. /// @params scale Guidance strength. 1.0f means no guidance. Higher values mean stronger guidance. LLAMA_API void llama_sample_classifier_free_guidance( struct llama_context * ctx, llama_token_data_array * candidates, struct llama_context * guidance_ctx, float scale); /// @details Sorts candidate tokens by their logits in descending order and calculate probabilities based on logits. LLAMA_API void llama_sample_softmax( struct llama_context * ctx, llama_token_data_array * candidates); /// @details Top-K sampling described in academic paper "The Curious Case of Neural Text Degeneration" https://arxiv.org/abs/1904.09751 LLAMA_API void llama_sample_top_k( struct llama_context * ctx, llama_token_data_array * candidates, int32_t k, size_t min_keep); /// @details Nucleus sampling described in academic paper "The Curious Case of Neural Text Degeneration" https://arxiv.org/abs/1904.09751 LLAMA_API void llama_sample_top_p( struct llama_context * ctx, llama_token_data_array * candidates, float p, size_t min_keep); /// @details Minimum P sampling as described in https://github.com/ggerganov/llama.cpp/pull/3841 LLAMA_API void llama_sample_min_p( struct llama_context * ctx, llama_token_data_array * candidates, float p, size_t min_keep); /// @details Tail Free Sampling described in https://www.trentonbricken.com/Tail-Free-Sampling/. LLAMA_API void llama_sample_tail_free( struct llama_context * ctx, llama_token_data_array * candidates, float z, size_t min_keep); /// @details Locally Typical Sampling implementation described in the paper https://arxiv.org/abs/2202.00666. LLAMA_API void llama_sample_typical( struct llama_context * ctx, llama_token_data_array * candidates, float p, size_t min_keep); LLAMA_API void llama_sample_temp( struct llama_context * ctx, llama_token_data_array * candidates, float temp); LLAMA_API DEPRECATED(void llama_sample_temperature( struct llama_context * ctx, llama_token_data_array * candidates, float temp), "use llama_sample_temp instead"); /// @details Apply constraints from grammar LLAMA_API void llama_sample_grammar( struct llama_context * ctx, llama_token_data_array * candidates, const struct llama_grammar * grammar); /// @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 llama_token llama_sample_token_mirostat( struct llama_context * ctx, llama_token_data_array * candidates, float tau, float eta, int32_t m, float * mu); /// @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 llama_token llama_sample_token_mirostat_v2( struct llama_context * ctx, llama_token_data_array * candidates, float tau, float eta, float * mu); /// @details Selects the token with the highest probability. /// Does not compute the token probabilities. Use llama_sample_softmax() instead. LLAMA_API llama_token llama_sample_token_greedy( struct llama_context * ctx, llama_token_data_array * candidates); /// @details Randomly selects a token from the candidates based on their probabilities. LLAMA_API llama_token llama_sample_token( struct llama_context * ctx, llama_token_data_array * candidates); /// @details Accepts the sampled token into the grammar LLAMA_API void llama_grammar_accept_token( struct llama_context * ctx, struct llama_grammar * grammar, llama_token token); // // Beam search // struct llama_beam_view { const llama_token * tokens; size_t n_tokens; float p; // Cumulative beam probability (renormalized relative to all beams) bool eob; // Callback should set this to true when a beam is at end-of-beam. }; // Passed to beam_search_callback function. // Whenever 0 < common_prefix_length, this number of tokens should be copied from any of the beams // (e.g. beams[0]) as they will be removed (shifted) from all beams in all subsequent callbacks. // These pointers are valid only during the synchronous callback, so should not be saved. struct llama_beams_state { struct llama_beam_view * beam_views; size_t n_beams; // Number of elements in beam_views[]. size_t common_prefix_length; // Current max length of prefix tokens shared by all beams. bool last_call; // True iff this is the last callback invocation. }; // Type of pointer to the beam_search_callback function. // void* callback_data is any custom data passed to llama_beam_search, that is subsequently // passed back to beam_search_callback. This avoids having to use global variables in the callback. typedef void (*llama_beam_search_callback_fn_t)(void * callback_data, struct llama_beams_state); /// @details Deterministically returns entire sentence constructed by a beam search. /// @param ctx Pointer to the llama_context. /// @param callback Invoked for each iteration of the beam_search loop, passing in beams_state. /// @param callback_data A pointer that is simply passed back to callback. /// @param n_beams Number of beams to use. /// @param n_past Number of tokens already evaluated. /// @param n_predict Maximum number of tokens to predict. EOS may occur earlier. LLAMA_API void llama_beam_search( struct llama_context * ctx, llama_beam_search_callback_fn_t callback, void * callback_data, size_t n_beams, int32_t n_past, int32_t n_predict); // Performance information LLAMA_API struct llama_timings llama_get_timings(struct llama_context * ctx); LLAMA_API void llama_print_timings(struct llama_context * ctx); LLAMA_API void llama_reset_timings(struct llama_context * ctx); // 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); LLAMA_API void llama_dump_timing_info_yaml(FILE * stream, const struct llama_context * ctx); #ifdef __cplusplus } #endif // Internal API to be implemented by llama.cpp and used by tests/benchmarks only #ifdef LLAMA_API_INTERNAL #include #include struct ggml_tensor; const std::vector> & llama_internal_get_tensor_map( struct llama_context * ctx ); #endif // LLAMA_API_INTERNAL #endif // LLAMA_H