diff --git a/awqutils/README.md b/awqutils/README.md new file mode 100644 index 000000000..da7a85e92 --- /dev/null +++ b/awqutils/README.md @@ -0,0 +1,67 @@ +# AWQ: Activation-aware Weight Quantization for LLM - version apply to llamacpp +[[Paper](https://arxiv.org/abs/2306.00978)][[Original Repo](https://github.com/mit-han-lab/llm-awq)][[easy-to-use Repo](https://github.com/casper-hansen/AutoAWQ)] + +## Contents + +- [Install](##Install) +- [Convert](##Convert) +- [Quantize](##Quantize) +- [Benchmark](##Benchmark) +- [Results](##Results) + +## Install +Install requirements +```bash +pip install -r requirements.txt +``` +Get the pre-computed AWQ search results for multiple model families, including LLaMA, LLaMA2, MPT, OPT +```bash +git clone https://huggingface.co/datasets/mit-han-lab/awq-model-zoo awq_cache +``` + +## Convert +Example for llama 7b model +```bash +python convert-awq-hf-to-gguf.py models/llama-7b/ --awq-path awq_cache/llama-7b-w4-g128.pt --tmp-model-path models/llama-7b-scales --outfile models/llama_7b_fp16.gguf +``` + +## Quantize +```bash +./build/bin/quantize models/llama_7b_fp16.gguf models/llama_7b_q4_0.gguf q4_0 +``` + +## Benchmark +The perplexity measurements in table above are done against the `wikitext2` test dataset (https://paperswithcode.com/dataset/wikitext-2), with context length of 512. +```bash +./build/bin/perplexity -m models/llama_7b_q4_0.gguf -f datasets/wikitext-2-raw/wiki.test.raw +``` + +## Results + +### Memory/Disk Requirements + +Llama 7B + +| Model | Original | AWQ-4bit | +|------:|--------------:|--------------:| +| fp16 | 12.853 GB | 12.853 GB | +| q4_0 | 3.647 GB | 3.647 GB | +| q4_1 | 4.041 GB | 4.041 GB | +| q2_k | 2.649 GB | 2.649 GB | + +### Quantization + +Several quantization methods are supported. They differ in the resulting model disk size and inference speed. + +| Model | Measure | F16 | Q4_0 | Q4_1 | Q2_K | +|-----------:|--------------|-------:|-------:|-------:|-------:| +|Llama 7B | perplexity | 5.9066 | 6.1214 | 6.0643 | xxxxxx| +|Llama 7B | file size | 12.9G | 3.5G | 3.9G | 2.7G | +|Llama 7B | ms/tok @ 4th | xxx | xx | xx | xx | +|Llama 7B | ms/tok @ 8th | xxx | xx | xx | xx | +|Llama 7B | bits/weight | 16.0 | 4.5 | 5.0 | 2.6 | +|AWQ-LLama 7B| perplexity | 5.9175 | 6.0252 | xxxxxx | xxxxx | +|AWQ-LLama 7B| file size | 12.9G | 3.5G | 3.9G | 2.7G | +|AWQ-LLama 7B| ms/tok @ 4th | xxx| xxx | xxx | xxx | +|AWQ-LLama 7B| ms/tok @ 8th | xxx| xx | xx | xx | +|AWQ-LLama 7B| bits/weight | 16.0 | 4.5 | 5.0 | 2.6 | diff --git a/awqutils/apply_awq.py b/awqutils/apply_awq.py new file mode 100644 index 000000000..2fd347909 --- /dev/null +++ b/awqutils/apply_awq.py @@ -0,0 +1,160 @@ +import os +import torch +import torch.nn as nn +from transformers import AutoModelForCausalLM, AutoConfig + +from transformers.models.bloom.modeling_bloom import BloomBlock, BloomGelu +from transformers.models.opt.modeling_opt import OPTDecoderLayer +from transformers.models.llama.modeling_llama import LlamaDecoderLayer, LlamaRMSNorm +from transformers.activations import GELUActivation + +class ScaledActivation(nn.Module): + def __init__(self, module, scales): + super().__init__() + self.act = module + self.scales = nn.Parameter(scales.data) + + def forward(self, x): + return self.act(x) / self.scales.view(1, 1, -1).to(x.device) + +def set_op_by_name(layer, name, new_module): + levels = name.split('.') + if len(levels) > 1: + mod_ = layer + for l_idx in range(len(levels)-1): + if levels[l_idx].isdigit(): + mod_ = mod_[int(levels[l_idx])] + else: + mod_ = getattr(mod_, levels[l_idx]) + setattr(mod_, levels[-1], new_module) + else: + setattr(layer, name, new_module) + +def get_op_by_name(module, op_name): + # get the op by its name relative to the module + for name, m in module.named_modules(): + if name == op_name: + return m + raise ValueError(f"Cannot find op {op_name} in module {module}") + +@torch.no_grad() +def scale_ln_fcs(ln, fcs, scales): + if not isinstance(fcs, list): + fcs = [fcs] + + scales = scales.to(ln.weight.device) + + ln.weight.div_(scales) + if hasattr(ln, 'bias') and ln.bias is not None: + ln.bias.div_(scales) + + for fc in fcs: + fc.weight.mul_(scales.view(1, -1)) + + for p in ln.parameters(): + assert torch.isnan(p).sum() == 0 + for fc in fcs: + for p in fc.parameters(): + assert torch.isnan(p).sum() == 0 + + +@torch.no_grad() +def scale_fc_fc(fc1, fc2, scales): + assert isinstance(fc1, nn.Linear) + assert isinstance(fc2, nn.Linear) + # assert fc1.out_features == fc2.in_features + + scales = scales.to(fc1.weight.device) + + # fc1.weight.div_(scales.view(-1, 1)) + fc1.weight[-scales.size(0):].div_(scales.view(-1, 1)) + if fc1.bias is not None: + fc1.bias.div_(scales.view(-1)) + + fc2.weight.mul_(scales.view(1, -1)) + + for p in fc1.parameters(): + assert torch.isnan(p).sum() == 0 + for p in fc2.parameters(): + assert torch.isnan(p).sum() == 0 + + +@torch.no_grad() +def scale_gelu_fc(gelu, fc, scales): + assert isinstance(gelu, (nn.GELU, BloomGelu, GELUActivation)) + assert isinstance(fc, nn.Linear) + + fc.weight.mul_(scales.view(1, -1).to(fc.weight.device)) + + for p in fc.parameters(): + assert torch.isnan(p).sum() == 0 + + +def apply_scale(module, scales_list, input_feat_dict=None): + for prev_op_name, layer_names, scales in scales_list: + prev_op = get_op_by_name(module, prev_op_name) + layers = [get_op_by_name(module, name) for name in layer_names] + + prev_op.cuda() + for layer in layers: + layer.cuda() + scales.cuda() + + if isinstance(prev_op, nn.Linear): + assert len(layers) == 1 + scale_fc_fc(prev_op, layers[0], scales) + elif isinstance(prev_op, (nn.LayerNorm, LlamaRMSNorm)): + scale_ln_fcs(prev_op, layers, scales) + elif isinstance(prev_op, (nn.GELU, BloomGelu, GELUActivation)): + new_module = ScaledActivation(prev_op, scales) + set_op_by_name(module, prev_op_name, new_module) + scale_gelu_fc(prev_op, layers[0], scales) + else: + raise NotImplementedError( + f"prev_op {type(prev_op)} not supported yet!") + + # apply the scaling to input feat if given; prepare it for clipping + if input_feat_dict is not None: + for layer_name in layer_names: + inp = input_feat_dict[layer_name] + inp.div_(scales.view(1, -1).to(inp.device)) + + prev_op.cpu() + for layer in layers: + layer.cpu() + scales.cpu() + +@torch.no_grad() +def apply_clip(module, clip_list): + for name, max_val in clip_list: + layer = get_op_by_name(module, name) + layer.cuda() + max_val = max_val.to(layer.weight.device) + org_shape = layer.weight.shape + layer.weight.data = layer.weight.data.reshape(*max_val.shape[:2], -1) + layer.weight.data = torch.clamp(layer.weight.data, -max_val, max_val) + layer.weight.data = layer.weight.data.reshape(org_shape) + layer.cpu() + +def apply_awq(model, awq_results): + apply_scale(model, awq_results["scale"]) + apply_clip(model, awq_results["clip"]) + +def add_scale_weights(model, model_path, scale_path, tmp_path): + print("Loading pre-computed AWQ results from", str(scale_path)) + awq_results = torch.load(str(scale_path), map_location="cpu") + apply_awq(model, awq_results) + model.save_pretrained(str(tmp_path)) + os.system(f"cp {str(model_path)}/tokenizer* {str(tmp_path)}") + return True + + +if __name__ == "__main__": + model_path = "/data/namtd12/llm_models/Llama-2-7b-hf" + scale_path = "awq_cache_pretrained/llama-2-7b-chat-w4-g128.pt" + tmp_path = "debug" + config = AutoConfig.from_pretrained(model_path, trust_remote_code=True) + model = AutoModelForCausalLM.from_pretrained( + model_path, config=config, trust_remote_code=True) + model.eval() + add_scale_weights(model, scale_path, tmp_path) \ No newline at end of file diff --git a/awqutils/requirements.txt b/awqutils/requirements.txt new file mode 100644 index 000000000..097a0b6c0 --- /dev/null +++ b/awqutils/requirements.txt @@ -0,0 +1,2 @@ +torch>=2.0.0 +transformers>=4.32.0 \ No newline at end of file diff --git a/convert-awq-hf-to-gguf.py b/convert-awq-hf-to-gguf.py new file mode 100755 index 000000000..51bdcab21 --- /dev/null +++ b/convert-awq-hf-to-gguf.py @@ -0,0 +1,1241 @@ +#!/usr/bin/env python3 +from __future__ import annotations + +import argparse +import concurrent.futures +import enum +import faulthandler +import functools +import itertools +import json +import math +import mmap +import pickle +import re +import signal +import struct +import sys +import time +import zipfile +from abc import ABCMeta, abstractmethod +from concurrent.futures import ProcessPoolExecutor, ThreadPoolExecutor +from dataclasses import dataclass +from pathlib import Path +from typing import IO, TYPE_CHECKING, Any, Callable, Iterable, Literal, TypeVar + +import numpy as np +from sentencepiece import SentencePieceProcessor +from awqutils.apply_awq import add_scale_weights +from transformers import AutoModelForCausalLM, AutoConfig + + +import os +if 'NO_LOCAL_GGUF' not in os.environ: + sys.path.insert(1, str(Path(__file__).parent / 'gguf-py')) +import gguf + +if TYPE_CHECKING: + from typing import TypeAlias + +if hasattr(faulthandler, 'register') and hasattr(signal, 'SIGUSR1'): + faulthandler.register(signal.SIGUSR1) + +NDArray: TypeAlias = 'np.ndarray[Any, Any]' + +ARCH = gguf.MODEL_ARCH.LLAMA + +DEFAULT_CONCURRENCY = 8 +# +# data types +# + + +@dataclass(frozen=True) +class DataType: + name: str + dtype: np.dtype[Any] + valid_conversions: list[str] + + def elements_to_bytes(self, n_elements: int) -> int: + return n_elements * self.dtype.itemsize + + +@dataclass(frozen=True) +class UnquantizedDataType(DataType): + pass + + +DT_F16 = UnquantizedDataType('F16', dtype = np.dtype(np.float16), valid_conversions = ['F32', 'Q8_0']) +DT_F32 = UnquantizedDataType('F32', dtype = np.dtype(np.float32), valid_conversions = ['F16', 'Q8_0']) +DT_I32 = UnquantizedDataType('I32', dtype = np.dtype(np.int16), valid_conversions = []) +DT_BF16 = UnquantizedDataType('BF16', dtype = np.dtype(np.uint16), valid_conversions = ['F32', 'F16', 'Q8_0']) + + +@dataclass(frozen=True) +class QuantizedDataType(DataType): + block_size: int + quantized_dtype: np.dtype[Any] + ggml_type: gguf.GGMLQuantizationType + + def quantize(self, arr: NDArray) -> NDArray: + raise NotImplementedError(f'Quantization for {self.name} not implemented') + + def elements_to_bytes(self, n_elements: int) -> int: + assert n_elements % self.block_size == 0, f'Invalid number of elements {n_elements} for {self.name} with block size {self.block_size}' + return self.quantized_dtype.itemsize * (n_elements // self.block_size) + + +@dataclass(frozen=True) +class Q8_0QuantizedDataType(QuantizedDataType): + # Mini Q8_0 quantization in Python! + def quantize(self, arr: NDArray) -> NDArray: + assert arr.size % self.block_size == 0 and arr.size != 0, f'Bad array size {arr.size}' + assert arr.dtype == np.float32, f'Bad array type {arr.dtype}' + n_blocks = arr.size // self.block_size + blocks = arr.reshape((n_blocks, self.block_size)) + # Much faster implementation of block quantization contributed by @Cebtenzzre + + def quantize_blocks_q8_0(blocks: NDArray) -> Iterable[tuple[Any, Any]]: + d = abs(blocks).max(axis = 1) / np.float32(127) + with np.errstate(divide = 'ignore'): + qs = (blocks / d[:, None]).round() + qs[d == 0] = 0 + yield from zip(d, qs) + return np.fromiter(quantize_blocks_q8_0(blocks), count = n_blocks, dtype = self.quantized_dtype) + + +DT_Q8_0 = Q8_0QuantizedDataType('Q8_0', + dtype = np.dtype(np.float32), valid_conversions = [], + ggml_type = gguf.GGMLQuantizationType.Q8_0, block_size = 32, + quantized_dtype = np.dtype([('d', ' DataType: + dt = GGML_FILE_TYPE_TO_DATA_TYPE.get(self) + if dt is None: + raise ValueError(self) + # 1D tensors are always F32. + return dt if len(tensor.shape) > 1 else DT_F32 + + +GGML_FILE_TYPE_TO_DATA_TYPE: dict[GGMLFileType, DataType] = { + GGMLFileType.AllF32 : DT_F32, + GGMLFileType.MostlyF16 : DT_F16, + GGMLFileType.MostlyQ8_0: DT_Q8_0, +} + +# +# hparams loading +# + + +@dataclass +class Params: + n_vocab: int + n_embd: int + n_layer: int + n_ctx: int + n_ff: int + n_head: int + n_head_kv: int + f_norm_eps: float + + rope_scaling_type: gguf.RopeScalingType | None = None + f_rope_freq_base: float | None = None + f_rope_scale: float | None = None + n_orig_ctx: int | None = None + rope_finetuned: bool | None = None + + ftype: GGMLFileType | None = None + + # path to the directory containing the model files + path_model: Path | None = None + + @staticmethod + def guessed(model: LazyModel) -> Params: + # try transformer naming first + n_vocab, n_embd = model["model.embed_tokens.weight"].shape if "model.embed_tokens.weight" in model else model["tok_embeddings.weight"].shape + + # try transformer naming first + if "model.layers.0.self_attn.q_proj.weight" in model: + n_layer = next(i for i in itertools.count() if f"model.layers.{i}.self_attn.q_proj.weight" not in model) + elif "model.layers.0.self_attn.W_pack.weight" in model: # next: try baichuan naming + n_layer = next(i for i in itertools.count() if f"model.layers.{i}.self_attn.W_pack.weight" not in model) + else: + n_layer = next(i for i in itertools.count() if f"layers.{i}.attention.wq.weight" not in model) + + if n_layer < 1: + raise Exception("failed to guess 'n_layer'. This model is unknown or unsupported.\n" + "Suggestion: provide 'config.json' of the model in the same directory containing model files.") + + n_head = n_embd // 128 # guessed + n_mult = 256 # guessed + + # TODO: verify this + n_ff = int(2 * (4 * n_embd) / 3) + n_ff = n_mult * ((n_ff + n_mult - 1) // n_mult) + + return Params( + n_vocab = n_vocab, + n_embd = n_embd, + n_layer = n_layer, + n_ctx = -1, + n_ff = n_ff, + n_head = n_head, + n_head_kv = n_head, + f_norm_eps = 1e-5, + ) + + @staticmethod + def loadHFTransformerJson(model: LazyModel, config_path: Path) -> Params: + config = json.load(open(config_path)) + + rope_scaling_type = f_rope_scale = n_orig_ctx = rope_finetuned = None + rope_scaling = config.get("rope_scaling") + + if rope_scaling is not None and (typ := rope_scaling.get("type")): + rope_factor = rope_scaling.get("factor") + f_rope_scale = rope_factor + if typ == "linear": + rope_scaling_type = gguf.RopeScalingType.LINEAR + elif typ == "yarn": + rope_scaling_type = gguf.RopeScalingType.YARN + n_orig_ctx = rope_scaling['original_max_position_embeddings'] + rope_finetuned = rope_scaling['finetuned'] + else: + raise NotImplementedError(f'Unknown rope scaling type: {typ}') + + if "max_sequence_length" in config: + n_ctx = config["max_sequence_length"] + elif "max_position_embeddings" in config: + n_ctx = config["max_position_embeddings"] + else: + raise Exception("failed to guess 'n_ctx'. This model is unknown or unsupported.\n" + "Suggestion: provide 'config.json' of the model in the same directory containing model files.") + + return Params( + n_vocab = config["vocab_size"], + n_embd = config["hidden_size"], + n_layer = config["num_hidden_layers"], + n_ctx = n_ctx, + n_ff = config["intermediate_size"], + n_head = (n_head := config["num_attention_heads"]), + n_head_kv = config.get("num_key_value_heads", n_head), + f_norm_eps = config["rms_norm_eps"], + f_rope_freq_base = config.get("rope_theta"), + rope_scaling_type = rope_scaling_type, + f_rope_scale = f_rope_scale, + n_orig_ctx = n_orig_ctx, + rope_finetuned = rope_finetuned, + ) + + # LLaMA v2 70B params.json + # {"dim": 8192, "multiple_of": 4096, "ffn_dim_multiplier": 1.3, "n_heads": 64, "n_kv_heads": 8, "n_layers": 80, "norm_eps": 1e-05, "vocab_size": -1} + @staticmethod + def loadOriginalParamsJson(model: LazyModel, config_path: Path) -> Params: + config = json.load(open(config_path)) + + # hack to determine LLaMA v1 vs v2 vs CodeLlama + if config.get("rope_theta") == 1000000: + # CodeLlama + n_ctx = 16384 + elif config["norm_eps"] == 1e-05: + # LLaMA v2 + n_ctx = 4096 + else: + # LLaMA v1 + n_ctx = 2048 + + return Params( + n_vocab = model["tok_embeddings.weight"].shape[0], + n_embd = config["dim"], + n_layer = config["n_layers"], + n_ctx = n_ctx, + n_ff = model["layers.0.feed_forward.w1.weight"].shape[0], + n_head = (n_head := config["n_heads"]), + n_head_kv = config.get("n_kv_heads", n_head), + f_norm_eps = config["norm_eps"], + f_rope_freq_base = config.get("rope_theta"), + ) + + @staticmethod + def load(model_plus: ModelPlus) -> Params: + hf_config_path = model_plus.paths[0].parent / "config.json" + orig_config_path = model_plus.paths[0].parent / "params.json" + + if hf_config_path.exists(): + params = Params.loadHFTransformerJson(model_plus.model, hf_config_path) + elif orig_config_path.exists(): + params = Params.loadOriginalParamsJson(model_plus.model, orig_config_path) + elif model_plus.format != 'none': + params = Params.guessed(model_plus.model) + else: + raise ValueError('Cannot guess params when model format is none') + + params.path_model = model_plus.paths[0].parent + + return params + + +# +# vocab +# + +class BpeVocab: + def __init__(self, fname_tokenizer: Path, fname_added_tokens: Path | None) -> None: + self.bpe_tokenizer = json.loads(open(str(fname_tokenizer), encoding="utf-8").read()) + added_tokens: dict[str, int] + if fname_added_tokens is not None: + # FIXME: Verify that added tokens here _cannot_ overlap with the main vocab. + added_tokens = json.load(open(fname_added_tokens, encoding="utf-8")) + else: + # Fall back to trying to find the added tokens in tokenizer.json + tokenizer_json_file = fname_tokenizer.parent / 'tokenizer.json' + if not tokenizer_json_file.is_file(): + added_tokens = {} + else: + tokenizer_json = json.load(open(tokenizer_json_file, encoding="utf-8")) + added_tokens = dict( + (item['content'], item['id']) + for item in tokenizer_json.get('added_tokens', []) + # Added tokens here can be duplicates of the main vocabulary. + if item['content'] not in self.bpe_tokenizer) + + vocab_size: int = len(self.bpe_tokenizer) + expected_ids = list(range(vocab_size, vocab_size + len(added_tokens))) + actual_ids = sorted(added_tokens.values()) + if expected_ids != actual_ids: + expected_end_id = vocab_size + len(actual_ids) - 1 + raise Exception(f"Expected the {len(actual_ids)} added token ID(s) to be sequential in the range {vocab_size} - {expected_end_id}; got {actual_ids}") + + items = sorted(added_tokens.items(), key=lambda text_idx: text_idx[1]) + self.added_tokens_list = [text for (text, idx) in items] + self.vocab_size_base: int = vocab_size + self.vocab_size: int = self.vocab_size_base + len(self.added_tokens_list) + self.fname_tokenizer = fname_tokenizer + self.fname_added_tokens = fname_added_tokens + + def bpe_tokens(self) -> Iterable[tuple[bytes, float, gguf.TokenType]]: + tokenizer = self.bpe_tokenizer + reverse_vocab = {id: encoded_tok for encoded_tok, id in tokenizer.items()} + + for i, _ in enumerate(tokenizer): + yield reverse_vocab[i], 0.0, gguf.TokenType.NORMAL + + def added_tokens(self) -> Iterable[tuple[bytes, float, gguf.TokenType]]: + for text in self.added_tokens_list: + score = -1000.0 + yield text.encode("utf-8"), score, gguf.TokenType.CONTROL + + def all_tokens(self) -> Iterable[tuple[bytes, float, gguf.TokenType]]: + yield from self.bpe_tokens() + yield from self.added_tokens() + + def __repr__(self) -> str: + return f"" + + +class SentencePieceVocab: + def __init__(self, fname_tokenizer: Path, fname_added_tokens: Path | None) -> None: + self.sentencepiece_tokenizer = SentencePieceProcessor(str(fname_tokenizer)) + added_tokens: dict[str, int] + if fname_added_tokens is not None: + added_tokens = json.load(open(fname_added_tokens, encoding="utf-8")) + else: + added_tokens = {} + + vocab_size: int = self.sentencepiece_tokenizer.vocab_size() + + new_tokens = {id: piece for piece, id in added_tokens.items() if id >= vocab_size} + expected_new_ids = list(range(vocab_size, vocab_size + len(new_tokens))) + actual_new_ids = sorted(new_tokens.keys()) + + if expected_new_ids != actual_new_ids: + raise ValueError(f"Expected new token IDs {expected_new_ids} to be sequential; got {actual_new_ids}") + + # Token pieces that were added to the base vocabulary. + self.added_tokens_list = [new_tokens[id] for id in actual_new_ids] + self.vocab_size_base = vocab_size + self.vocab_size = self.vocab_size_base + len(self.added_tokens_list) + self.fname_tokenizer = fname_tokenizer + self.fname_added_tokens = fname_added_tokens + + def sentencepiece_tokens(self) -> Iterable[tuple[bytes, float, gguf.TokenType]]: + tokenizer = self.sentencepiece_tokenizer + for i in range(tokenizer.vocab_size()): + piece = tokenizer.id_to_piece(i) + text: bytes = piece.encode("utf-8") + score: float = tokenizer.get_score(i) + + toktype = gguf.TokenType.NORMAL + if tokenizer.is_unknown(i): + toktype = gguf.TokenType.UNKNOWN + if tokenizer.is_control(i): + toktype = gguf.TokenType.CONTROL + + # NOTE: I think added_tokens are user defined. + # ref: https://github.com/google/sentencepiece/blob/master/src/sentencepiece_model.proto + # if tokenizer.is_user_defined(i): toktype = gguf.TokenType.USER_DEFINED + + if tokenizer.is_unused(i): + toktype = gguf.TokenType.UNUSED + if tokenizer.is_byte(i): + toktype = gguf.TokenType.BYTE + + yield text, score, toktype + + def added_tokens(self) -> Iterable[tuple[bytes, float, gguf.TokenType]]: + for text in self.added_tokens_list: + score = -1000.0 + yield text.encode("utf-8"), score, gguf.TokenType.USER_DEFINED + + def all_tokens(self) -> Iterable[tuple[bytes, float, gguf.TokenType]]: + yield from self.sentencepiece_tokens() + yield from self.added_tokens() + + def __repr__(self) -> str: + return f"" + + +Vocab: TypeAlias = 'BpeVocab | SentencePieceVocab' + +# +# data loading +# TODO: reuse (probably move to gguf.py?) +# + + +def permute(weights: NDArray, n_head: int, n_head_kv: int) -> NDArray: + # print( "permute debug " + str(weights.shape[0]) + " x " + str(weights.shape[1]) + " nhead " + str(n_head) + " nheadkv " + str(n_kv_head) ) + if n_head_kv is not None and n_head != n_head_kv: + n_head = n_head_kv + return (weights.reshape(n_head, 2, weights.shape[0] // n_head // 2, *weights.shape[1:]) + .swapaxes(1, 2) + .reshape(weights.shape)) + + +class Tensor(metaclass=ABCMeta): + data_type: DataType + + @abstractmethod + def astype(self, data_type: DataType) -> Tensor: ... + @abstractmethod + def permute(self, n_head: int, n_head_kv: int) -> Tensor: ... + @abstractmethod + def permute_part(self, n_part: int, n_head: int, n_head_kv: int) -> UnquantizedTensor: ... + @abstractmethod + def part(self, n_part: int) -> UnquantizedTensor: ... + @abstractmethod + def to_ggml(self) -> GGMLCompatibleTensor: ... + + +def bf16_to_fp32(bf16_arr: np.ndarray[Any, np.dtype[np.uint16]]) -> NDArray: + assert bf16_arr.dtype == np.uint16, f"Input array should be of dtype uint16, but got {bf16_arr.dtype}" + fp32_arr = bf16_arr.astype(np.uint32) << 16 + return fp32_arr.view(np.float32) + + +class UnquantizedTensor(Tensor): + def __init__(self, ndarray: NDArray) -> None: + assert isinstance(ndarray, np.ndarray) + self.ndarray = ndarray + self.data_type = NUMPY_TYPE_TO_DATA_TYPE[ndarray.dtype] + + def astype(self, data_type: DataType) -> Tensor: + dtype = data_type.dtype + if self.data_type == DT_BF16: + self.ndarray = bf16_to_fp32(self.ndarray) + return UnquantizedTensor(self.ndarray.astype(dtype)) + + def to_ggml(self) -> UnquantizedTensor: + return self + + def permute_part(self, n_part: int, n_head: int, n_head_kv: int) -> UnquantizedTensor: + r = self.ndarray.shape[0] // 3 + return UnquantizedTensor(permute(self.ndarray[r * n_part : r * n_part + r, ...], n_head, n_head_kv)) + + def part(self, n_part: int) -> UnquantizedTensor: + r = self.ndarray.shape[0] // 3 + return UnquantizedTensor(self.ndarray[r * n_part : r * n_part + r, ...]) + + def permute(self, n_head: int, n_head_kv: int) -> UnquantizedTensor: + return UnquantizedTensor(permute(self.ndarray, n_head, n_head_kv)) + + +def load_unquantized(lazy_tensor: LazyTensor, expected_dtype: Any = None, convert: bool = False) -> NDArray: + tensor = lazy_tensor.load() + assert isinstance(tensor, UnquantizedTensor) + + # double-check: + actual_shape = list(tensor.ndarray.shape) + assert actual_shape == lazy_tensor.shape, (actual_shape, lazy_tensor.shape) + if expected_dtype is not None and expected_dtype != tensor.ndarray.dtype: + if convert: + tensor.ndarray = tensor.ndarray.astype(expected_dtype) + else: + raise ValueError(f'expected this tensor to have dtype {expected_dtype}, got {tensor.ndarray.dtype}') + + return tensor.ndarray + + +GGMLCompatibleTensor = UnquantizedTensor + + +@dataclass +class LazyTensor: + _load: Callable[[], Tensor] + shape: list[int] + data_type: DataType + description: str + + def load(self) -> Tensor: + ret = self._load() + # Should be okay if it maps to the same numpy type? + assert ret.data_type == self.data_type or (self.data_type.dtype == ret.data_type.dtype), \ + (self.data_type, ret.data_type, self.description) + return ret + + def astype(self, data_type: DataType) -> LazyTensor: + self.validate_conversion_to(data_type) + + def load() -> Tensor: + return self.load().astype(data_type) + return LazyTensor(load, self.shape, data_type, f'convert({data_type}) {self.description}') + + def validate_conversion_to(self, data_type: DataType) -> None: + if data_type != self.data_type and data_type.name not in self.data_type.valid_conversions: + raise ValueError(f'Cannot validate conversion from {self.data_type} to {data_type}.') + + +LazyModel: TypeAlias = 'dict[str, LazyTensor]' + + +@dataclass +class ModelPlus: + model: LazyModel + paths: list[Path] # Where this was read from. + format: Literal['ggml', 'torch', 'safetensors', 'none'] + vocab: Vocab | None # For GGML models (which have vocab built in), the vocab. + + +def merge_sharded(models: list[LazyModel]) -> LazyModel: + # Original LLaMA models have each file contain one part of each tensor. + # Use a dict instead of a set to preserve order. + names = {name: None for model in models for name in model} + + def convert(name: str) -> LazyTensor: + lazy_tensors: list[LazyTensor] = [model[name] for model in models] + if len(lazy_tensors) == 1: + # only one file; don't go through this procedure since there might + # be quantized tensors + return lazy_tensors[0] + if len(lazy_tensors[0].shape) == 1: + # the tensor is just duplicated in every file + return lazy_tensors[0] + if name.startswith('tok_embeddings.') or \ + name.endswith('.attention.wo.weight') or \ + name.endswith('.feed_forward.w2.weight'): + # split by columns + axis = 1 + else: + # split by rows + axis = 0 + concatenated_shape = list(lazy_tensors[0].shape) + concatenated_shape[axis] = sum(tensor.shape[axis] for tensor in lazy_tensors) + + def load() -> UnquantizedTensor: + ndarrays = [load_unquantized(tensor) for tensor in lazy_tensors] + concatenated: NDArray = np.concatenate(ndarrays, axis=axis) + return UnquantizedTensor(concatenated) + description = 'concatenated[[' + '] | ['.join(lt.description for lt in lazy_tensors) + ']]' + return LazyTensor(load, concatenated_shape, lazy_tensors[0].data_type, description) + return {name: convert(name) for name in names} + + +def merge_multifile_models(models_plus: list[ModelPlus]) -> ModelPlus: + formats = set(mp.format for mp in models_plus) + assert len(formats) == 1, "different formats?" + format = formats.pop() + paths = [path for mp in models_plus for path in mp.paths] + # Use the first non-None vocab, if any. + try: + vocab = next(mp.vocab for mp in models_plus if mp.vocab is not None) + except StopIteration: + vocab = None + + if any("model.embed_tokens.weight" in mp.model for mp in models_plus): + # Transformers models put different tensors in different files, but + # don't split indivdual tensors between files. + model: LazyModel = {} + for mp in models_plus: + model.update(mp.model) + else: + model = merge_sharded([mp.model for mp in models_plus]) + + return ModelPlus(model, paths, format, vocab) + + +def permute_lazy(lazy_tensor: LazyTensor, n_head: int, n_head_kv: int) -> LazyTensor: + def load() -> Tensor: + return lazy_tensor.load().permute(n_head, n_head_kv) + return LazyTensor(load, lazy_tensor.shape, lazy_tensor.data_type, f'permute({n_head}, {n_head_kv}) ' + lazy_tensor.description) + + +def permute_part_lazy(lazy_tensor: LazyTensor, n_part: int, n_head: int, n_head_kv: int) -> LazyTensor: + def load() -> Tensor: + return lazy_tensor.load().permute_part(n_part, n_head, n_head_kv) + s = lazy_tensor.shape.copy() + s[0] = s[0] // 3 + return LazyTensor(load, s, lazy_tensor.data_type, f'permute({n_head}, {n_head_kv}) ' + lazy_tensor.description) + + +def part_lazy(lazy_tensor: LazyTensor, n_part: int) -> LazyTensor: + def load() -> Tensor: + return lazy_tensor.load().part(n_part) + s = lazy_tensor.shape.copy() + s[0] = s[0] // 3 + return LazyTensor(load, s, lazy_tensor.data_type, 'part ' + lazy_tensor.description) + + +# Functionality that simulates `torch.load` but where individual tensors are +# only loaded into memory on demand, not all at once. +# PyTorch can't do this natively as of time of writing: +# - https://github.com/pytorch/pytorch/issues/64327 +# This allows us to de-shard without multiplying RAM usage, and also +# conveniently drops the PyTorch dependency (though we still need numpy). + + +@dataclass +class LazyStorageKind: + data_type: DataType + + +@dataclass +class LazyStorage: + load: Callable[[int, int], NDArray] + kind: LazyStorageKind + description: str + + +class LazyUnpickler(pickle.Unpickler): + def __init__(self, fp: IO[bytes], data_base_path: str, zip_file: zipfile.ZipFile): + super().__init__(fp) + self.data_base_path = data_base_path + self.zip_file = zip_file + + def persistent_load(self, pid: Any) -> Any: + assert pid[0] == 'storage' + assert isinstance(pid[1], LazyStorageKind) + data_type = pid[1].data_type + filename_stem = pid[2] + filename = f'{self.data_base_path}/{filename_stem}' + info = self.zip_file.getinfo(filename) + + def load(offset: int, elm_count: int) -> NDArray: + dtype = data_type.dtype + fp = self.zip_file.open(info) + fp.seek(offset * dtype.itemsize) + size = elm_count * dtype.itemsize + data = fp.read(size) + assert len(data) == size + return np.frombuffer(data, dtype) + description = f'storage data_type={data_type} path-in-zip={filename} path={self.zip_file.filename}' + return LazyStorage(load=load, kind=pid[1], description=description) + + @staticmethod + def lazy_rebuild_tensor_v2(storage: Any, storage_offset: Any, size: Any, stride: Any, + requires_grad: Any, backward_hooks: Any, metadata: Any = None) -> LazyTensor: + assert isinstance(storage, LazyStorage) + + def load() -> UnquantizedTensor: + elm_count = stride[0] * size[0] + return UnquantizedTensor(storage.load(storage_offset, elm_count).reshape(size)) + description = f'pickled storage_offset={storage_offset} in {storage.description}' + return LazyTensor(load, list(size), storage.kind.data_type, description) + + @staticmethod + def rebuild_from_type_v2(func, new_type, args, state): + return func(*args) + + CLASSES: dict[tuple[str, str], Any] = { + # getattr used here as a workaround for mypy not being smart enough to detrmine + # the staticmethods have a __func__ attribute. + ('torch._tensor', '_rebuild_from_type_v2'): getattr(rebuild_from_type_v2, '__func__'), + ('torch._utils', '_rebuild_tensor_v2'): getattr(lazy_rebuild_tensor_v2, '__func__'), + ('torch', 'BFloat16Storage'): LazyStorageKind(DT_BF16), + ('torch', 'HalfStorage'): LazyStorageKind(DT_F16), + ('torch', 'FloatStorage'): LazyStorageKind(DT_F32), + ('torch', 'IntStorage'): LazyStorageKind(DT_I32), + ('torch', 'Tensor'): LazyTensor, + } + + def find_class(self, module: str, name: str) -> Any: + if not module.startswith('torch'): + return super().find_class(module, name) + return self.CLASSES[(module, name)] + + +def lazy_load_torch_file(outer_fp: IO[bytes], path: Path) -> ModelPlus: + zf = zipfile.ZipFile(outer_fp) + pickle_paths = [name for name in zf.namelist() if name.endswith('.pkl')] + assert len(pickle_paths) == 1, pickle_paths + pickle_fp = zf.open(pickle_paths[0], 'r') + unpickler = LazyUnpickler(pickle_fp, + data_base_path=pickle_paths[0][:-4], + zip_file=zf) + model = unpickler.load() + if 'model' in model: model = model['model'] + as_dict = dict(model.items()) + return ModelPlus(model=as_dict, paths=[path], format='torch', vocab=None) + + +def lazy_load_safetensors_file(fp: IO[bytes], path: Path) -> ModelPlus: + header_size, = struct.unpack(' LazyTensor: + data_type = SAFETENSORS_DATA_TYPES[info['dtype']] + numpy_dtype = data_type.dtype + shape: list[int] = info['shape'] + begin, end = info['data_offsets'] + assert 0 <= begin <= end <= len(byte_buf) + assert end - begin == math.prod(shape) * numpy_dtype.itemsize + buf = byte_buf[begin:end] + + def load() -> UnquantizedTensor: + return UnquantizedTensor(np.frombuffer(buf, dtype=numpy_dtype).reshape(shape)) + description = f'safetensors begin={begin} end={end} type={data_type} path={path}' + return LazyTensor(load, shape, data_type, description) + model = {name: convert(info) for (name, info) in header.items() if name != '__metadata__'} + return ModelPlus(model=model, paths=[path], format='safetensors', vocab=None) + + +def must_read(fp: IO[bytes], length: int) -> bytes: + ret = fp.read(length) + if len(ret) < length: + raise Exception("unexpectedly reached end of file") + return ret + + +@functools.lru_cache(maxsize=None) +def lazy_load_file(path: Path) -> ModelPlus: + fp = open(path, 'rb') + first8 = fp.read(8) + fp.seek(0) + if first8[:2] == b'PK': + # A zip file, i.e. PyTorch format + return lazy_load_torch_file(fp, path) + elif struct.unpack(' Iterable[Out]: + '''Parallel map, but with backpressure. If the caller doesn't call `next` + fast enough, this will stop calling `func` at some point rather than + letting results pile up in memory. Specifically, there is a max of one + output value buffered per thread.''' + if concurrency < 2: + yield from map(func, iterable) + # Not reached. + iterable = iter(iterable) + executor_class: type[ThreadPoolExecutor] | type[ProcessPoolExecutor] + if use_processpool_executor: + executor_class = ProcessPoolExecutor + else: + executor_class = ThreadPoolExecutor + with executor_class(max_workers = max_workers) as executor: + futures: list[concurrent.futures.Future[Out]] = [] + done = False + for _ in range(concurrency): + try: + futures.append(executor.submit(func, next(iterable))) + except StopIteration: + done = True + break + + while futures: + result = futures.pop(0).result() + while not done and len(futures) < concurrency: + try: + futures.append(executor.submit(func, next(iterable))) + except StopIteration: + done = True + break + yield result + + +def check_vocab_size(params: Params, vocab: Vocab) -> None: + if params.n_vocab != vocab.vocab_size: + assert isinstance(vocab, BpeVocab) or isinstance(vocab, SentencePieceVocab) + if params.n_vocab == vocab.vocab_size_base: + print("Ignoring added_tokens.json since model matches vocab size without it.") + vocab.added_tokens_list = [] + vocab.vocab_size = vocab.vocab_size_base + return + msg = f"Vocab size mismatch (model has {params.n_vocab}, but {vocab.fname_tokenizer}" + if vocab.fname_added_tokens is not None: + msg += f" combined with {vocab.fname_added_tokens}" + msg += f" has {vocab.vocab_size})." + if vocab.vocab_size < params.n_vocab < vocab.vocab_size + 20 and vocab.fname_added_tokens is None: + msg += f" Most likely you are missing added_tokens.json (should be in {vocab.fname_tokenizer.parent})." + raise Exception(msg) + + +class OutputFile: + def __init__(self, fname_out: Path, endianess:gguf.GGUFEndian = gguf.GGUFEndian.LITTLE) -> None: + self.gguf = gguf.GGUFWriter(fname_out, gguf.MODEL_ARCH_NAMES[ARCH], endianess=endianess) + + def add_meta_arch(self, params: Params) -> None: + name = "LLaMA" + + # TODO: better logic to determine model name + if params.n_ctx == 4096: + name = "LLaMA v2" + elif params.path_model is not None: + name = str(params.path_model.parent).split('/')[-1] + + self.gguf.add_name (name) + self.gguf.add_context_length (params.n_ctx) + self.gguf.add_embedding_length (params.n_embd) + self.gguf.add_block_count (params.n_layer) + self.gguf.add_feed_forward_length (params.n_ff) + self.gguf.add_rope_dimension_count(params.n_embd // params.n_head) + self.gguf.add_head_count (params.n_head) + self.gguf.add_head_count_kv (params.n_head_kv) + self.gguf.add_layer_norm_rms_eps (params.f_norm_eps) + + if params.f_rope_freq_base is not None: + self.gguf.add_rope_freq_base(params.f_rope_freq_base) + + if params.rope_scaling_type: + assert params.f_rope_scale is not None + self.gguf.add_rope_scaling_type(params.rope_scaling_type) + self.gguf.add_rope_scaling_factor(params.f_rope_scale) + + if params.n_orig_ctx is not None: + self.gguf.add_rope_scaling_orig_ctx_len(params.n_orig_ctx) + + if params.rope_finetuned is not None: + self.gguf.add_rope_scaling_finetuned(params.rope_finetuned) + + if params.ftype is not None: + self.gguf.add_file_type(params.ftype) + + def add_meta_vocab(self, vocab: Vocab) -> None: + tokens = [] + scores = [] + toktypes = [] + # NOTE: `all_tokens` returns the base vocabulary and added tokens + for text, score, toktype in vocab.all_tokens(): + tokens.append(text) + scores.append(score) + toktypes.append(toktype) + + if isinstance(vocab, SentencePieceVocab): + self.gguf.add_tokenizer_model("llama") + elif isinstance(vocab, BpeVocab): + self.gguf.add_tokenizer_model("gpt2") + else: + raise ValueError('Unknown vocab type: Not BpeVocab or SentencePieceVocab') + self.gguf.add_token_list(tokens) + self.gguf.add_token_scores(scores) + self.gguf.add_token_types(toktypes) + + def add_meta_special_vocab(self, svocab: gguf.SpecialVocab) -> None: + svocab.add_to_gguf(self.gguf) + + def add_tensor_info(self, name: str, tensor: LazyTensor) -> None: + n_elements = int(np.prod(tensor.shape)) + raw_dtype = getattr(tensor.data_type, 'ggml_type', None) + data_type = getattr(tensor.data_type, 'quantized_type', None) or tensor.data_type.dtype + data_nbytes = tensor.data_type.elements_to_bytes(n_elements) + self.gguf.add_tensor_info(name, tensor.shape, data_type, data_nbytes, raw_dtype = raw_dtype) + + def write_meta(self) -> None: + self.gguf.write_header_to_file() + self.gguf.write_kv_data_to_file() + + def write_tensor_info(self) -> None: + self.gguf.write_ti_data_to_file() + + def close(self) -> None: + self.gguf.close() + + @staticmethod + def write_vocab_only(fname_out: Path, params: Params, vocab: Vocab, svocab: gguf.SpecialVocab, endianess:gguf.GGUFEndian = gguf.GGUFEndian.LITTLE) -> None: + check_vocab_size(params, vocab) + + of = OutputFile(fname_out, endianess=endianess) + + # meta data + of.add_meta_arch(params) + of.add_meta_vocab(vocab) + of.add_meta_special_vocab(svocab) + + of.write_meta() + + of.close() + + @staticmethod + def do_item(item: tuple[str, LazyTensor]) -> tuple[DataType, NDArray]: + name, lazy_tensor = item + tensor = lazy_tensor.load().to_ggml() + return (lazy_tensor.data_type, tensor.ndarray) + + @staticmethod + def maybe_do_quantize(item: tuple[DataType, NDArray]) -> NDArray: + dt, arr = item + if not isinstance(dt, QuantizedDataType): + return arr + return dt.quantize(arr) + + @staticmethod + def write_all(fname_out: Path, ftype: GGMLFileType, params: Params, model: LazyModel, vocab: Vocab, svocab: gguf.SpecialVocab, concurrency: int = DEFAULT_CONCURRENCY, endianess: gguf.GGUFEndian = gguf.GGUFEndian.LITTLE) -> None: + check_vocab_size(params, vocab) + + of = OutputFile(fname_out, endianess=endianess) + + # meta data + of.add_meta_arch(params) + of.add_meta_vocab(vocab) + of.add_meta_special_vocab(svocab) + + # tensor info + for name, lazy_tensor in model.items(): + of.add_tensor_info(name, lazy_tensor) + + of.write_meta() + of.write_tensor_info() + + # tensor data + ndarrays_inner = bounded_parallel_map(OutputFile.do_item, model.items(), concurrency = concurrency) + if ftype == GGMLFileType.MostlyQ8_0: + ndarrays = bounded_parallel_map(OutputFile.maybe_do_quantize, ndarrays_inner, concurrency = concurrency, max_workers = concurrency, use_processpool_executor = True) + else: + ndarrays = map(OutputFile.maybe_do_quantize, ndarrays_inner) + + start = time.time() + for i, ((name, lazy_tensor), ndarray) in enumerate(zip(model.items(), ndarrays)): + elapsed = time.time() - start + size = ' x '.join(f"{dim:6d}" for dim in lazy_tensor.shape) + padi = len(str(len(model))) + print(f"[{i+1:{padi}d}/{len(model)}] Writing tensor {name:38s} | size {size:16} | type {lazy_tensor.data_type.name:4} | T+{int(elapsed):4}") + of.gguf.write_tensor_data(ndarray) + + of.close() + + +def pick_output_type(model: LazyModel, output_type_str: str | None) -> GGMLFileType: + wq_type = model[gguf.TENSOR_NAMES[gguf.MODEL_TENSOR.ATTN_Q].format(bid=0) +".weight"].data_type + + if output_type_str == "f32" or (output_type_str is None and wq_type == DT_F32): + return GGMLFileType.AllF32 + if output_type_str == "f16" or (output_type_str is None and wq_type in (DT_F16, DT_BF16)): + return GGMLFileType.MostlyF16 + if output_type_str == "q8_0": + return GGMLFileType.MostlyQ8_0 + + name_to_type = {name: lazy_tensor.data_type for (name, lazy_tensor) in model.items()} + + raise Exception(f"Unexpected combination of types: {name_to_type}") + + +def convert_to_output_type(model: LazyModel, output_type: GGMLFileType) -> LazyModel: + return {name: tensor.astype(output_type.type_for_tensor(name, tensor)) + for (name, tensor) in model.items()} + + +def convert_model_names(model: LazyModel, params: Params) -> LazyModel: + tmap = gguf.TensorNameMap(ARCH, params.n_layer) + should_skip: set[gguf.MODEL_TENSOR] = set(gguf.MODEL_TENSOR_SKIP.get(ARCH, [])) + + tmp = model + + # HF models permut or pack some of the tensors, so we need to undo that + for i in itertools.count(): + if f"model.layers.{i}.self_attn.q_proj.weight" in model: + print(f"Permuting layer {i}") + tmp[f"model.layers.{i}.self_attn.q_proj.weight"] = permute_lazy(model[f"model.layers.{i}.self_attn.q_proj.weight"], params.n_head, params.n_head) + tmp[f"model.layers.{i}.self_attn.k_proj.weight"] = permute_lazy(model[f"model.layers.{i}.self_attn.k_proj.weight"], params.n_head, params.n_head_kv) + # tmp[f"model.layers.{i}.self_attn.v_proj.weight"] = model[f"model.layers.{i}.self_attn.v_proj.weight"] + elif f"model.layers.{i}.self_attn.W_pack.weight" in model: + print(f"Unpacking and permuting layer {i}") + tmp[f"model.layers.{i}.self_attn.q_proj.weight"] = permute_part_lazy(model[f"model.layers.{i}.self_attn.W_pack.weight"], 0, params.n_head, params.n_head) + tmp[f"model.layers.{i}.self_attn.k_proj.weight"] = permute_part_lazy(model[f"model.layers.{i}.self_attn.W_pack.weight"], 1, params.n_head, params.n_head_kv) + tmp[f"model.layers.{i}.self_attn.v_proj.weight"] = part_lazy (model[f"model.layers.{i}.self_attn.W_pack.weight"], 2) + del tmp[f"model.layers.{i}.self_attn.W_pack.weight"] + else: + break + + out: LazyModel = {} + for name, lazy_tensor in model.items(): + tensor_type, name_new = tmap.get_type_and_name(name, try_suffixes = (".weight", ".bias")) or (None, None) + if name_new is None: + raise Exception(f"Unexpected tensor name: {name}") + + if tensor_type in should_skip: + print(f"skipping tensor {name_new}") + continue + + print(f"{name:48s} -> {name_new:40s} | {lazy_tensor.data_type.name:6s} | {lazy_tensor.shape}") + out[name_new] = lazy_tensor + + return out + + +def nth_multifile_path(path: Path, n: int) -> Path | None: + '''Given any path belonging to a multi-file model (e.g. foo.bin.1), return + the nth path in the model. + ''' + # Support the following patterns: + patterns: list[tuple[str, str]] = [ + # - x.00.pth, x.01.pth, etc. + (r'\.[0-9]{2}\.pth$', f'.{n:02}.pth'), + # - x-00001-of-00002.bin, x-00002-of-00002.bin, etc. + (r'-[0-9]{5}-of-(.*)$', fr'-{n:05}-of-\1'), + # x.bin, x.bin.1, etc. + (r'(\.[0-9]+)?$', r'\1' if n == 0 else fr'\1.{n}') + ] + for regex, replacement in patterns: + if re.search(regex, path.name): + new_path = path.with_name(re.sub(regex, replacement, path.name)) + if new_path.exists(): + return new_path + return None + + +def find_multifile_paths(path: Path) -> list[Path]: + '''Given any path belonging to a multi-file model (e.g. foo.bin.1), return + the whole list of paths in the model. + ''' + ret: list[Path] = [] + for i in itertools.count(): + nth_path = nth_multifile_path(path, i) + if nth_path is None: + break + ret.append(nth_path) + if not ret: + # No matches. This should only happen if the file was named, e.g., + # foo.0, and there was no file named foo. Oh well, try to process it + # as a single file. + return [path] + return ret + + +def load_some_model(path: Path) -> ModelPlus: + '''Load a model of any supported format.''' + # Be extra-friendly and accept either a file or a directory: + if path.is_dir(): + # Check if it's a set of safetensors files first + globs = ["model-00001-of-*.safetensors", "model.safetensors"] + files = [file for glob in globs for file in path.glob(glob)] + if not files: + # Try the PyTorch patterns too, with lower priority + globs = ["consolidated.00.pth", "pytorch_model-00001-of-*.bin", "*.pt", "pytorch_model.bin"] + files = [file for glob in globs for file in path.glob(glob)] + if not files: + raise Exception(f"Can't find model in directory {path}") + if len(files) > 1: + raise Exception(f"Found multiple models in {path}, not sure which to pick: {files}") + path = files[0] + + paths = find_multifile_paths(path) + models_plus: list[ModelPlus] = [] + for path in paths: + print(f"Loading model file {path}") + models_plus.append(lazy_load_file(path)) + + model_plus = merge_multifile_models(models_plus) + return model_plus + + +def load_vocab(path: Path, vocabtype: str | None) -> Vocab: + # Be extra-friendly and accept either a file or a directory. Also, if it's + # a directory, it might be the model directory, and tokenizer.model might + # be in the parent of that. + if path.is_dir(): + vocab_file = "tokenizer.model" + if vocabtype == 'bpe': + vocab_file = "vocab.json" + path2 = path / vocab_file + # Use `.parent` instead of /.. to handle the symlink case better. + path3 = path.parent / vocab_file + if path2.exists(): + path = path2 + elif path3.exists(): + path = path3 + else: + raise FileNotFoundError( + f"Could not find {vocab_file} in {path} or its parent; " + "if it's in another directory, pass the directory as --vocab-dir") + + print(f"Loading vocab file '{path}', type '{vocabtype}'") + + added_tokens_path = path.parent / "added_tokens.json" + if vocabtype == "bpe": + return BpeVocab(path, added_tokens_path if added_tokens_path.exists() else None) + elif vocabtype == "spm": + return SentencePieceVocab(path, added_tokens_path if added_tokens_path.exists() else None) + else: + raise ValueError(f"Unsupported vocabulary type {vocabtype}") + + +def default_outfile(model_paths: list[Path], file_type: GGMLFileType) -> Path: + namestr = { + GGMLFileType.AllF32: "f32", + GGMLFileType.MostlyF16: "f16", + GGMLFileType.MostlyQ8_0:"q8_0", + }[file_type] + ret = model_paths[0].parent / f"ggml-model-{namestr}.gguf" + if ret in model_paths: + sys.stderr.write( + f"Error: Default output path ({ret}) would overwrite the input. " + "Please explicitly specify a path using --outfile.\n") + sys.exit(1) + return ret + + +def do_dump_model(model_plus: ModelPlus) -> None: + print(f"model_plus.paths = {model_plus.paths!r}") + print(f"model_plus.format = {model_plus.format!r}") + print(f"model_plus.vocab = {model_plus.vocab!r}") + for name, lazy_tensor in model_plus.model.items(): + print(f"{name}: shape={lazy_tensor.shape} type={lazy_tensor.data_type}; {lazy_tensor.description}") + + +def main(args_in: list[str] | None = None) -> None: + output_choices = ["f32", "f16"] + if np.uint32(1) == np.uint32(1).newbyteorder("<"): + # We currently only support Q8_0 output on little endian systems. + output_choices.append("q8_0") + parser = argparse.ArgumentParser(description="Convert a LLaMa model to a GGML compatible file") + parser.add_argument("--awq-path", type=Path, default=None, help="Path to scale awq cache file") + parser.add_argument("--tmp-model-path",type=Path, default=None, help="Path to tmp model file") + parser.add_argument("--dump", action="store_true", help="don't convert, just show what's in the model") + parser.add_argument("--dump-single", action="store_true", help="don't convert, just show what's in a single model file") + parser.add_argument("--vocab-only", action="store_true", help="extract only the vocab") + parser.add_argument("--outtype", choices=output_choices, help="output format - note: q8_0 may be very slow (default: f16 or f32 based on input)") + parser.add_argument("--vocab-dir", type=Path, help="directory containing tokenizer.model, if separate from model file") + parser.add_argument("--outfile", type=Path, help="path to write to; default: based on input") + parser.add_argument("model", type=Path, help="directory containing model file, or model file itself (*.pth, *.pt, *.bin, *.safetensors)") + parser.add_argument("--vocabtype", choices=["spm", "bpe"], help="vocab format (default: spm)", default="spm") + parser.add_argument("--ctx", type=int, help="model training context (default: based on input)") + parser.add_argument("--concurrency", type=int, help=f"concurrency used for conversion (default: {DEFAULT_CONCURRENCY})", default = DEFAULT_CONCURRENCY) + parser.add_argument("--bigendian", action="store_true", help="model is executed on big endian machine") + + args = parser.parse_args(args_in) + if args.awq_path and args.tmp_model_path: + config = AutoConfig.from_pretrained(args.model, trust_remote_code=True) + model = AutoModelForCausalLM.from_pretrained( + args.model, config=config, trust_remote_code=True) + model.eval() + add_scale_weights(model, args.model, args.awq_path, args.tmp_model_path) + args.model = args.tmp_model_path + + if args.dump_single: + model_plus = lazy_load_file(args.model) + do_dump_model(model_plus) + return + + if not args.vocab_only: + model_plus = load_some_model(args.model) + else: + model_plus = ModelPlus(model = {}, paths = [args.model / 'dummy'], format = 'none', vocab = None) + + if args.dump: + do_dump_model(model_plus) + return + endianess = gguf.GGUFEndian.LITTLE + if args.bigendian: + endianess = gguf.GGUFEndian.BIG + + params = Params.load(model_plus) + if params.n_ctx == -1: + if args.ctx is None: + raise Exception("The model doesn't have a context size, and you didn't specify one with --ctx\n" + "Please specify one with --ctx:\n" + " - LLaMA v1: --ctx 2048\n" + " - LLaMA v2: --ctx 4096\n") + params.n_ctx = args.ctx + + if args.outtype: + params.ftype = { + "f32": GGMLFileType.AllF32, + "f16": GGMLFileType.MostlyF16, + "q8_0": GGMLFileType.MostlyQ8_0, + }[args.outtype] + + print(f"params = {params}") + + vocab: Vocab + if args.vocab_only: + if not args.outfile: + raise ValueError("need --outfile if using --vocab-only") + # FIXME: Try to respect vocab_dir somehow? + vocab = load_vocab(args.vocab_dir or args.model, args.vocabtype) + special_vocab = gguf.SpecialVocab(model_plus.paths[0].parent, + load_merges = args.vocabtype == 'bpe', + n_vocab = vocab.vocab_size) + outfile = args.outfile + OutputFile.write_vocab_only(outfile, params, vocab, special_vocab) + print(f"Wrote {outfile}") + return + + if model_plus.vocab is not None and args.vocab_dir is None: + vocab = model_plus.vocab + else: + vocab_dir = args.vocab_dir if args.vocab_dir else model_plus.paths[0].parent + vocab = load_vocab(vocab_dir, args.vocabtype) + # FIXME: Try to respect vocab_dir somehow? + special_vocab = gguf.SpecialVocab(model_plus.paths[0].parent, + load_merges = args.vocabtype == 'bpe', + n_vocab = vocab.vocab_size) + + model = model_plus.model + model = convert_model_names(model, params) + ftype = pick_output_type(model, args.outtype) + model = convert_to_output_type(model, ftype) + outfile = args.outfile or default_outfile(model_plus.paths, ftype) + + params.ftype = ftype + print(f"Writing {outfile}, format {ftype}") + + OutputFile.write_all(outfile, ftype, params, model, vocab, special_vocab, concurrency = args.concurrency, endianess=endianess) + print(f"Wrote {outfile}") + + +if __name__ == '__main__': + main()