enum llama_vocab_type {
LLAMA_VOCAB_TYPE_NONE = 0, // For models without vocab
LLAMA_VOCAB_TYPE_SPM = 1, // LLaMA tokenizer based on byte-level BPE with byte fallback
LLAMA_VOCAB_TYPE_BPE = 2, // GPT-2 tokenizer based on byte-level BPE
LLAMA_VOCAB_TYPE_WPM = 3, // BERT tokenizer based on WordPiece
LLAMA_VOCAB_TYPE_UGM = 4, // T5 tokenizer based on Unigram
LLAMA_VOCAB_TYPE_RWKV = 5, // RWKV tokenizer based on greedy tokenization
LLAMA_VOCAB_TYPE_PLAMO2 = 6, // PLaMo-2 tokenizer based on Aho-Corasick with dynamic programming
};
enum llama_pooling_type {
LLAMA_POOLING_TYPE_UNSPECIFIED = -1,
LLAMA_POOLING_TYPE_NONE = 0,
LLAMA_POOLING_TYPE_MEAN = 1,
LLAMA_POOLING_TYPE_CLS = 2,
LLAMA_POOLING_TYPE_LAST = 3,
LLAMA_POOLING_TYPE_RANK = 4, // used by reranking models to attach the classification head to the graph
};
enum llama_split_mode {
LLAMA_SPLIT_MODE_NONE = 0, // single GPU
LLAMA_SPLIT_MODE_LAYER = 1, // split layers and KV across GPUs
LLAMA_SPLIT_MODE_ROW = 2, // split layers and KV across GPUs, use tensor parallelism if supported
};
typedefstruct llama_token_data_array { // TODO: consider SoA // NOTE: this pointer can be modified by the samplers
llama_token_data * data;
size_t size;
int64_t selected; // this is the index in the data array (i.e. not the token id) bool sorted;
} llama_token_data_array;
// Input data for llama_encode/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 // (if set to NULL, the token position will be tracked automatically by llama_encode/llama_decode) // - seq_id : the sequence to which the respective token belongs // (if set to NULL, the sequence ID will be assumed to be 0) // - logits : if zero, the logits (and/or the embeddings) for the respective token will not be output // (if set to NULL: // - if embeddings: all tokens are output // - if not: only the last token is output // ) // typedefstruct llama_batch {
int32_t n_tokens;
struct llama_model_params { // NULL-terminated list of devices to use for offloading (if NULL, all available devices are used)
ggml_backend_dev_t * devices;
// NULL-terminated list of buffer types to use for tensors that match a pattern conststruct llama_model_tensor_buft_override * tensor_buft_overrides;
int32_t n_gpu_layers; // number of layers to store in VRAM enum llama_split_mode split_mode; // how to split the model across multiple GPUs
// the GPU that is used for the entire model when split_mode is LLAMA_SPLIT_MODE_NONE
int32_t main_gpu;
// proportion of the model (layers or rows) to offload to each GPU, size: llama_max_devices() constfloat * tensor_split;
// 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 conststruct 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 bool check_tensors; // validate model tensor data bool use_extra_bufts; // use extra buffer types (used for weight repacking)
};
// NOTE: changing the default values of parameters marked as [EXPERIMENTAL] may cause crashes or incorrect results in certain configurations // https://github.com/ggml-org/llama.cpp/pull/7544 struct llama_context_params {
uint32_t n_ctx; // text context, 0 = from model
uint32_t n_batch; // logical maximum batch size that can be submitted to llama_decode
uint32_t n_ubatch; // physical maximum batch size
uint32_t n_seq_max; // max number of sequences (i.e. distinct states for recurrent models)
int32_t n_threads; // number of threads to use for generation
int32_t n_threads_batch; // number of threads to use for batch processing
enum llama_rope_scaling_type rope_scaling_type; // RoPE scaling type, from `enum llama_rope_scaling_type` enum llama_pooling_type pooling_type; // whether to pool (sum) embedding results by sequence id enum llama_attention_type attention_type; // attention type to use for embeddings
// ref: https://github.com/ggml-org/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 float defrag_thold; // defragment the KV cache if holes/size > thold, <= 0 disabled (default)
enum ggml_type type_k; // data type for K cache [EXPERIMENTAL] enum ggml_type type_v; // data type for V cache [EXPERIMENTAL]
// Abort callback // if it returns true, execution of llama_decode() will be aborted // currently works only with CPU execution
ggml_abort_callback abort_callback; void * abort_callback_data;
// Keep the booleans together and at the end of the struct to avoid misalignment during copy-by-value. bool embeddings; // if true, extract embeddings (together with logits) bool offload_kqv; // offload the KQV ops (including the KV cache) to GPU bool flash_attn; // use flash attention [EXPERIMENTAL] bool no_perf; // measure performance timings bool op_offload; // offload host tensor operations to device bool swa_full; // use full-size SWA cache (https://github.com/ggml-org/llama.cpp/pull/13194#issuecomment-2868343055) // NOTE: setting to false when n_seq_max > 1 can cause bad performance in some cases // ref: https://github.com/ggml-org/llama.cpp/pull/13845#issuecomment-2924800573 bool kv_unified; // use a unified buffer across the input sequences when computing the attention // try to disable when n_seq_max > 1 for improved performance when the sequences do not share a large prefix // ref: https://github.com/ggml-org/llama.cpp/pull/14363
};
// model quantization parameters typedefstruct 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 enum ggml_type output_tensor_type; // output tensor type enum ggml_type token_embedding_type; // token embeddings tensor type 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; // quantize all tensors to the default type bool keep_split; // quantize to the same number of shards void * imatrix; // pointer to importance matrix data void * kv_overrides; // pointer to vector containing overrides void * tensor_types; // pointer to vector containing tensor types void * prune_layers; // pointer to vector containing layer indices to prune
} llama_model_quantize_params;
// used in chat template typedefstruct llama_chat_message { constchar * role; constchar * content;
} llama_chat_message;
// lora adapter struct llama_adapter_lora;
// Helpers for getting default parameters // TODO: update API to start accepting pointers to params structs (https://github.com/ggml-org/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);
// Call once at the end of the program - currently only used for MPI
LLAMA_API void llama_backend_free(void);
// 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);
// Load the model from a file // If the file is split into multiple parts, the file name must follow this pattern: <name>-%05d-of-%05d.gguf // If the split file name does not follow this pattern, use llama_model_load_from_splits
LLAMA_API struct llama_model * llama_model_load_from_file( constchar * path_model, struct llama_model_params params);
// Load the model from multiple splits (support custom naming scheme) // The paths must be in the correct order
LLAMA_API struct llama_model * llama_model_load_from_splits( constchar ** paths,
size_t n_paths, struct llama_model_params params);
// Load the model from a buffer // The buffer must contain a complete GGUF file
LLAMA_API struct llama_model * llama_model_load_from_buffer( constvoid * buffer,
size_t buffer_size, struct llama_model_params params);
// Load the model from a file handle // The file handle must be positioned at the beginning of a complete GGUF file // The caller is responsible for closing the file handle
LLAMA_API struct llama_model * llama_model_load_from_file_handle(
FILE * file, struct llama_model_params params);
// Get the model's RoPE frequency scaling factor
LLAMA_API float llama_model_rope_freq_scale_train(conststruct llama_model * model);
// Returns the number of classifier outputs (only valid for classifier models) // Undefined behavior for non-classifier models
LLAMA_API uint32_t llama_model_n_cls_out(conststruct llama_model * model);
// Returns label of classifier output by index (<n_cls_out). Returns nullptr if no label provided
LLAMA_API constchar * llama_model_cls_label(conststruct llama_model * model, uint32_t i);
// 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 // - When retrieving a string, an extra byte must be allocated to account for the null terminator // - 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(conststruct llama_model * model, constchar * key, char * buf, size_t buf_size);
// Get the number of metadata key/value pairs
LLAMA_API int32_t llama_model_meta_count(conststruct llama_model * model);
// Get metadata key name by index
LLAMA_API int32_t llama_model_meta_key_by_index(conststruct 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(conststruct 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(conststruct 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(conststruct llama_model * model);
// Get the default chat template. Returns nullptr if not available // If name is NULL, returns the default chat template
LLAMA_API constchar * llama_model_chat_template(conststruct llama_model * model, constchar * name);
// Returns the total number of parameters in the model
LLAMA_API uint64_t llama_model_n_params(conststruct llama_model * model);
// Returns true if the model contains an encoder that requires llama_encode() call
LLAMA_API bool llama_model_has_encoder(conststruct llama_model * model);
// Returns true if the model contains a decoder that requires llama_decode() call
LLAMA_API bool llama_model_has_decoder(conststruct 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(conststruct llama_model * model);
// Returns true if the model is recurrent (like Mamba, RWKV, etc.)
LLAMA_API bool llama_model_is_recurrent(conststruct llama_model * model);
// Returns true if the model is diffusion-based (like LLaDA, Dream, etc.)
LLAMA_API bool llama_model_is_diffusion(conststruct llama_model * model);
// Load a LoRA adapter from file
LLAMA_API struct llama_adapter_lora * llama_adapter_lora_init( struct llama_model * model, constchar * path_lora);
// Manually free a LoRA adapter // Note: loaded adapters will be free when the associated model is deleted
LLAMA_API void llama_adapter_lora_free(struct llama_adapter_lora * adapter);
// The following functions operate on a llama_context, hence the naming: llama_verb_...
// Add a loaded LoRA adapter to given context // This will not modify model's weight
LLAMA_API int32_t llama_set_adapter_lora( struct llama_context * ctx, struct llama_adapter_lora * 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_rm_adapter_lora( struct llama_context * ctx, struct llama_adapter_lora * adapter);
// Remove all LoRA adapters from given context
LLAMA_API void llama_clear_adapter_lora(struct llama_context * ctx);
// 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_apply_adapter_cvec( struct llama_context * ctx, constfloat * data,
size_t len,
int32_t n_embd,
int32_t il_start,
int32_t il_end);
// // Memory //
// Clear the memory contents // If data == true, the data buffers will also be cleared together with the metadata
LLAMA_API void llama_memory_clear(
llama_memory_t mem, bool data);
// 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_memory_seq_rm(
llama_memory_t mem,
llama_seq_id seq_id,
llama_pos p0,
llama_pos p1);
// Copy all tokens that belong to the specified sequence to another sequence // p0 < 0 : [0, p1] // p1 < 0 : [p0, inf)
LLAMA_API void llama_memory_seq_cp(
llama_memory_t mem,
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_memory_seq_keep(
llama_memory_t mem,
llama_seq_id seq_id);
// Adds relative position "delta" to all tokens that belong to the specified sequence and have positions in [p0, p1) // p0 < 0 : [0, p1] // p1 < 0 : [p0, inf)
LLAMA_API void llama_memory_seq_add(
llama_memory_t mem,
llama_seq_id seq_id,
llama_pos p0,
llama_pos p1,
llama_pos delta);
// Integer division of the positions by factor of `d > 1` // p0 < 0 : [0, p1] // p1 < 0 : [p0, inf)
LLAMA_API void llama_memory_seq_div(
llama_memory_t mem,
llama_seq_id seq_id,
llama_pos p0,
llama_pos p1, int d);
// Returns the smallest position present in the memory for the specified sequence // This is typically non-zero only for SWA caches // Note that all positions in the range [pos_min, pos_max] are guaranteed to be present in the memory // Return -1 if the sequence is empty
LLAMA_API llama_pos llama_memory_seq_pos_min(
llama_memory_t mem,
llama_seq_id seq_id);
// Returns the largest position present in the memory for the specified sequence // Note that all positions in the range [pos_min, pos_max] are guaranteed to be present in the memory // Return -1 if the sequence is empty
LLAMA_API llama_pos llama_memory_seq_pos_max(
llama_memory_t mem,
llama_seq_id seq_id);
// Check if the memory supports shifting
LLAMA_API bool llama_memory_can_shift(llama_memory_t mem);
// // KV cache for self-attention (TODO: deprecate in favor of llama_memory) //
// 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
DEPRECATED(LLAMA_API int32_t llama_kv_self_n_tokens(conststruct llama_context * ctx), "Use llama_kv_self_seq_pos_max() and llama_kv_self_seq_pos_min() instead (https://github.com/ggml-org/llama.cpp/issues/13793)");
// Returns the number of used KV cells (i.e. have at least one sequence assigned to them)
DEPRECATED(LLAMA_API int32_t llama_kv_self_used_cells(conststruct llama_context * ctx), "Use llama_kv_self_seq_pos_max() and llama_kv_self_seq_pos_min() instead (https://github.com/ggml-org/llama.cpp/issues/13793)");
// Clear the KV cache - both cell info is erased and KV data is zeroed
DEPRECATED(LLAMA_API void llama_kv_self_clear( struct llama_context * ctx), "Use llama_memory_clear() instead");
// 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)
DEPRECATED(LLAMA_API bool llama_kv_self_seq_rm( struct llama_context * ctx,
llama_seq_id seq_id,
llama_pos p0,
llama_pos p1), "Use llama_memory_seq_rm() instead");
// 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)
DEPRECATED(LLAMA_API void llama_kv_self_seq_cp( struct llama_context * ctx,
llama_seq_id seq_id_src,
llama_seq_id seq_id_dst,
llama_pos p0,
llama_pos p1), "Use llama_memory_seq_cp() instead");
// Removes all tokens that do not belong to the specified sequence
DEPRECATED(LLAMA_API void llama_kv_self_seq_keep( struct llama_context * ctx,
llama_seq_id seq_id), "Use llama_memory_seq_keep() instead");
// 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() // p0 < 0 : [0, p1] // p1 < 0 : [p0, inf)
DEPRECATED(LLAMA_API void llama_kv_self_seq_add( struct llama_context * ctx,
llama_seq_id seq_id,
llama_pos p0,
llama_pos p1,
llama_pos delta), "Use llama_memory_seq_add() instead");
// 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() // p0 < 0 : [0, p1] // p1 < 0 : [p0, inf)
DEPRECATED(LLAMA_API void llama_kv_self_seq_div( struct llama_context * ctx,
llama_seq_id seq_id,
llama_pos p0,
llama_pos p1, int d), "Use llama_memory_seq_div() instead");
// Returns the smallest position present in the KV cache for the specified sequence // This is typically non-zero only for SWA caches // Note that all positions in the range [pos_min, pos_max] are guaranteed to be present in the KV cache // Return -1 if the sequence is empty
DEPRECATED(LLAMA_API llama_pos llama_kv_self_seq_pos_min( struct llama_context * ctx,
llama_seq_id seq_id), "Use llama_memory_seq_pos_min() instead");
// Returns the largest position present in the KV cache for the specified sequence // Note that all positions in the range [pos_min, pos_max] are guaranteed to be present in the KV cache // Return -1 if the sequence is empty
DEPRECATED(LLAMA_API llama_pos llama_kv_self_seq_pos_max( struct llama_context * ctx,
llama_seq_id seq_id), "Use llama_memory_seq_pos_max() instead");
// Defragment the KV cache // This will be applied: // - lazily on next llama_decode()
DEPRECATED(LLAMA_API void llama_kv_self_defrag(struct llama_context * ctx), "simply remove this call, the context will automatically decide when to do a defragmentation based on 'defrag_thold'");
// Check if the context supports KV cache shifting
DEPRECATED(LLAMA_API bool llama_kv_self_can_shift(conststruct llama_context * ctx), "use llama_memory_can_shift() instead");
// Apply the KV cache updates (such as K-shifts, defragmentation, etc.)
DEPRECATED(LLAMA_API void llama_kv_self_update(struct llama_context * ctx), "simply remove this call, updates are applied lazily on the next llama_decode()");
// // State / sessions //
// Returns the *actual* size in bytes of the state // (logits, embedding and memory) // 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");
// Get the exact size needed to copy the state of a single sequence
LLAMA_API size_t llama_state_seq_get_size( struct llama_context * ctx,
llama_seq_id seq_id);
// Copy the state 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);
// Return batch for single sequence of tokens // The sequence ID will be fixed to 0 // The position of the tokens will be tracked automatically by llama_decode // // 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);
// 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);
// Process a batch of tokens. // In contrast to llama_decode() - this call does not use KV cache. // For encode-decoder contexts, processes the batch using the encoder. // Can store the encoder output internally for later use by the decoder's cross-attention layers. // 0 - success // < 0 - error. the memory state is restored to the state before this call
LLAMA_API int32_t llama_encode( struct llama_context * ctx, struct llama_batch batch);
// Process a batch of tokens. // Requires the context to have a memory. // For encode-decoder contexts, processes the batch using the decoder. // Positive return values does not mean a fatal error, but rather a warning. // Upon fatal-error or abort, the ubatches that managed to be been processed will remain in the memory state of the context // To handle this correctly, query the memory state using llama_memory_seq_pos_min() and llama_memory_seq_pos_max() // Upon other return values, the memory state is restored to the state before this call // 0 - success // 1 - could not find a KV slot for the batch (try reducing the size of the batch or increase the context) // 2 - aborted (processed ubatches will remain in the context's memory) // -1 - invalid input batch // < -1 - fatal error (processed ubatches will remain in the context's memory)
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 context outputs embeddings or not // TODO: rename to avoid confusion with llama_get_embeddings()
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 whether the model is in warmup mode or not // If true, all model tensors are activated during llama_decode() to load and cache their weights.
LLAMA_API void llama_set_warmup(struct llama_context * ctx, bool warmup);
// 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 // TODO: deprecate in favor of llama_get_logits_ith() (ref: https://github.com/ggml-org/llama.cpp/pull/14853#issuecomment-3113143522)
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. // TODO: deprecate in favor of llama_get_embeddings_ith() (ref: https://github.com/ggml-org/llama.cpp/pull/14853#issuecomment-3113143522)
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[n_cls_out] with the rank(s) 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);
// Check if the token is supposed to end generation (end-of-generation, eg. EOS, EOT, etc.)
LLAMA_API bool llama_vocab_is_eog(conststruct llama_vocab * vocab, llama_token token);
// Identify if Token Id is a control token or a render-able token
LLAMA_API bool llama_vocab_is_control(conststruct llama_vocab * vocab, llama_token token);
// CLS is equivalent to BOS
DEPRECATED(LLAMA_API llama_token llama_vocab_cls(conststruct llama_vocab * vocab), // classification "use llama_vocab_bos instead");
// // 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 /// @return Returns INT32_MIN on overflow (e.g., tokenization result size exceeds int32_t limit) /// @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( conststruct llama_vocab * vocab, constchar * 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( conststruct llama_vocab * vocab,
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( conststruct llama_vocab * vocab, 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/ggml-org/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( constchar * tmpl, conststruct llama_chat_message * chat,
size_t n_msg, bool add_ass, char * buf,
int32_t length);
// Get list of built-in chat templates
LLAMA_API int32_t llama_chat_builtin_templates(constchar ** output, size_t len);
// // 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). //
typedefvoid * llama_sampler_context_t;
// user code can implement the interface below in order to create custom llama_sampler struct llama_sampler_i { constchar * (*name) (conststruct 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) (conststruct 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, ...);
};
// 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(conststruct llama_sampler * chain, int32_t i);
LLAMA_API int llama_sampler_chain_n (conststruct 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);
/// @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.
DEPRECATED(LLAMA_API struct llama_sampler * llama_sampler_init_softmax (void), "will be removed in the future (see https://github.com/ggml-org/llama.cpp/pull/9896#discussion_r1800920915)");
/// @details Top-K sampling described in academic paper "The Curious Case of Neural Text Degeneration" https://arxiv.org/abs/1904.09751 /// Setting k <= 0 makes this a noop
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 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);
/// #details Updates the logits l_i` = l_i/t. When t <= 0.0f, the maximum logit is kept at it's original value, the rest are set to -inf
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, floatexponent);
/// @details Top n sigma sampling as described in academic paper "Top-nσ: Not All Logits Are You Need" https://arxiv.org/pdf/2411.07641
LLAMA_API struct llama_sampler * llama_sampler_init_top_n_sigma(float n);
/// @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);
/// @details Intializes a GBNF grammar, see grammars/README.md for details. /// @param vocab The vocabulary that this grammar will be used with. /// @param grammar_str The production rules for the grammar, encoded as a string. Returns an empty grammar if empty. Returns NULL if parsing of grammar_str fails. /// @param grammar_root The name of the start symbol for the grammar.
LLAMA_API struct llama_sampler * llama_sampler_init_grammar( conststruct llama_vocab * vocab, constchar * grammar_str, constchar * grammar_root);
/// @details Lazy grammar sampler, introduced in https://github.com/ggml-org/llama.cpp/pull/9639 /// @param trigger_patterns A list of patterns that will trigger the grammar sampler. Pattern will be matched from the start of the generation output, and grammar sampler will be fed content starting from its first match group. /// @param trigger_tokens A list of tokens that will trigger the grammar sampler. Grammar sampler will be fed content starting from the trigger token included.
LLAMA_API struct llama_sampler * llama_sampler_init_grammar_lazy_patterns( conststruct llama_vocab * vocab, constchar * grammar_str, constchar * grammar_root, constchar ** trigger_patterns,
size_t num_trigger_patterns, const llama_token * trigger_tokens,
size_t num_trigger_tokens);
/// NOTE: Avoid using on the full vocabulary as searching for repeated tokens can become slow. For example, apply top-k or top-p sampling first.
LLAMA_API struct llama_sampler * llama_sampler_init_penalties(
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
/// @details DRY sampler, designed by p-e-w, as described in: https://github.com/oobabooga/text-generation-webui/pull/5677, porting Koboldcpp implementation authored by pi6am: https://github.com/LostRuins/koboldcpp/pull/982
LLAMA_API struct llama_sampler * llama_sampler_init_dry( conststruct llama_vocab * vocab,
int32_t n_ctx_train, float dry_multiplier, float dry_base,
int32_t dry_allowed_length,
int32_t dry_penalty_last_n, constchar ** seq_breakers,
size_t num_breakers);
// this sampler is meant to be used for fill-in-the-middle infilling // it's supposed to be used after top_k + top_p sampling // // 1. if the sum of the EOG probs times the number of candidates is higher than the sum of the other probs -> pick EOG // 2. combine probs of tokens that have the same prefix // // example: // // - before: // "hel": 0.5 // "hell": 0.2 // "hello": 0.1 // "dummy": 0.1 // // - after: // "hel": 0.8 // "dummy": 0.1 // // 3. discard non-EOG tokens with low prob // 4. if no tokens are left -> pick EOT //
LLAMA_API struct llama_sampler * llama_sampler_init_infill(conststruct llama_vocab * vocab);
// Returns the seed used by the sampler if applicable, LLAMA_DEFAULT_SEED otherwise
LLAMA_API uint32_t llama_sampler_get_seed(conststruct 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, constchar * 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, constchar * split_path, int split_no, int split_count);
// Print system information
LLAMA_API constchar * 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. //
// NOTE: the following work only with samplers constructed via llama_sampler_chain_init
LLAMA_API struct llama_perf_sampler_data llama_perf_sampler (conststruct llama_sampler * chain);
LLAMA_API void llama_perf_sampler_print(conststruct llama_sampler * chain);
LLAMA_API void llama_perf_sampler_reset( struct llama_sampler * chain);
// // training //
// function that returns whether or not a given tensor contains trainable parameters typedefbool (*llama_opt_param_filter)(conststruct ggml_tensor * tensor, void * userdata);
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