1296 lines
51 KiB
Python
Executable File
1296 lines
51 KiB
Python
Executable File
#!/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 os
|
|
import pickle
|
|
import re
|
|
import signal
|
|
import struct
|
|
import sys
|
|
import time
|
|
import zipfile
|
|
from abc import ABCMeta, abstractmethod
|
|
from collections import OrderedDict
|
|
from concurrent.futures import ProcessPoolExecutor, ThreadPoolExecutor
|
|
from dataclasses import dataclass
|
|
from pathlib import Path
|
|
from typing import IO, TYPE_CHECKING, Any, Callable, Iterable, Literal, Optional, TypeVar, cast
|
|
|
|
import numpy as np
|
|
from sentencepiece import SentencePieceProcessor
|
|
|
|
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', '<f2'), ('qs', 'i1', (32,))]))
|
|
|
|
# Quantized types skipped here because they may also map to np.float32
|
|
NUMPY_TYPE_TO_DATA_TYPE: dict[np.dtype[Any], DataType] = {}
|
|
for dt in (DT_BF16, DT_F16, DT_F32, DT_I32):
|
|
if dt.dtype in NUMPY_TYPE_TO_DATA_TYPE:
|
|
raise ValueError(f'Invalid duplicate data type {dt}')
|
|
NUMPY_TYPE_TO_DATA_TYPE[dt.dtype] = dt
|
|
|
|
SAFETENSORS_DATA_TYPES: dict[str, DataType] = {
|
|
'BF16': DT_BF16,
|
|
'F16': DT_F16,
|
|
'F32': DT_F32,
|
|
'I32': DT_I32,
|
|
}
|
|
|
|
# TODO: match this with `llama_ftype`
|
|
# TODO: rename to LLAMAFileType
|
|
# TODO: move to `gguf.py`
|
|
|
|
|
|
class GGMLFileType(enum.IntEnum):
|
|
AllF32 = 0
|
|
MostlyF16 = 1 # except 1d tensors
|
|
MostlyQ8_0 = 7 # except 1d tensors
|
|
|
|
def type_for_tensor(self, name: str, tensor: LazyTensor) -> 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
|
|
n_experts: int | None = None
|
|
n_experts_used: int | None = None
|
|
f_norm_eps: float | None = None
|
|
|
|
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.")
|
|
|
|
n_experts = None
|
|
n_experts_used = None
|
|
|
|
if "num_local_experts" in config:
|
|
n_experts = config["num_local_experts"]
|
|
n_experts_used = config["num_experts_per_tok"]
|
|
|
|
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),
|
|
n_experts = n_experts,
|
|
n_experts_used = n_experts_used,
|
|
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))
|
|
|
|
n_experts = None
|
|
n_experts_used = None
|
|
f_rope_freq_base = None
|
|
|
|
# hack to determine LLaMA v1 vs v2 vs CodeLlama
|
|
if config.get("moe"):
|
|
# Mixtral
|
|
n_ctx = 32768
|
|
elif 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
|
|
|
|
if "layers.0.feed_forward.w1.weight" in model:
|
|
n_ff = model["layers.0.feed_forward.w1.weight"].shape[0]
|
|
|
|
if config.get("moe"):
|
|
n_ff = model["layers.0.feed_forward.experts.0.w1.weight"].shape[0]
|
|
n_experts = config["moe"]["num_experts"]
|
|
n_experts_used = config["moe"]["num_experts_per_tok"]
|
|
f_rope_freq_base = 1e6
|
|
|
|
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 = n_ff,
|
|
n_head = (n_head := config["n_heads"]),
|
|
n_head_kv = config.get("n_kv_heads", n_head),
|
|
n_experts = n_experts,
|
|
n_experts_used = n_experts_used,
|
|
f_norm_eps = config["norm_eps"],
|
|
f_rope_freq_base = config.get("rope_theta", f_rope_freq_base),
|
|
)
|
|
|
|
@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
|
|
|
|
|
|
class VocabLoader:
|
|
def __init__(self, params: Params, fname_tokenizer: Path) -> None:
|
|
try:
|
|
from transformers import AutoTokenizer
|
|
except ImportError as e:
|
|
raise ImportError(
|
|
"To use VocabLoader, please install the `transformers` package. "
|
|
"You can install it with `pip install transformers`."
|
|
) from e
|
|
|
|
try:
|
|
self.tokenizer = AutoTokenizer.from_pretrained(str(fname_tokenizer), trust_remote_code=True)
|
|
except ValueError:
|
|
self.tokenizer = AutoTokenizer.from_pretrained(str(fname_tokenizer), use_fast=False, trust_remote_code=True)
|
|
|
|
self.added_tokens_dict: OrderedDict[str, int] = OrderedDict()
|
|
|
|
for tok, tokidx in sorted(self.tokenizer.get_added_vocab().items(), key=lambda x: x[1]):
|
|
if tokidx >= params.n_vocab or tokidx < self.tokenizer.vocab_size:
|
|
continue
|
|
|
|
self.added_tokens_dict[tok] = tokidx
|
|
|
|
self.unk_token_id: int = self.tokenizer.unk_token_id
|
|
self.specials: dict[str, int] = {
|
|
tok: self.tokenizer.get_vocab()[tok]
|
|
for tok in self.tokenizer.all_special_tokens
|
|
}
|
|
self.special_ids: set[int] = set(self.tokenizer.all_special_ids)
|
|
self.reverse_vocab = {id: encoded_tok for encoded_tok, id in self.tokenizer.get_vocab().items()}
|
|
self.vocab_size_base: int = self.tokenizer.vocab_size
|
|
self.vocab_size: int = self.vocab_size_base + len(self.added_tokens_dict)
|
|
self.fname_tokenizer: Path = fname_tokenizer
|
|
|
|
vocab_file = "tokenizer.model"
|
|
path_candidate = find_vocab_file_path(self.fname_tokenizer, vocab_file)
|
|
if path_candidate is not None:
|
|
self.spm = SentencePieceProcessor(str(path_candidate))
|
|
print(self.spm.vocab_size(), self.vocab_size_base)
|
|
else:
|
|
self.spm = None
|
|
|
|
def hf_tokens(self) -> Iterable[tuple[bytes, float, gguf.TokenType]]:
|
|
added_tokens_ids = set(self.added_tokens_dict.values())
|
|
|
|
for i in range(self.vocab_size_base):
|
|
if i in added_tokens_ids:
|
|
continue
|
|
|
|
text = self.reverse_vocab[i].encode("utf-8")
|
|
yield text, self.get_token_score(i), self.get_token_type(i)
|
|
|
|
def get_token_type(self, token_id: int) -> gguf.TokenType:
|
|
toktype = gguf.TokenType.NORMAL
|
|
|
|
if self.spm is not None and token_id < self.spm.vocab_size():
|
|
if self.spm.is_unknown(token_id):
|
|
toktype = gguf.TokenType.UNKNOWN
|
|
if self.spm.is_control(token_id):
|
|
toktype = gguf.TokenType.CONTROL
|
|
if self.spm.is_unused(token_id):
|
|
toktype = gguf.TokenType.UNUSED
|
|
if self.spm.is_byte(token_id):
|
|
toktype = gguf.TokenType.BYTE
|
|
else:
|
|
token = self.reverse_vocab[token_id]
|
|
if token_id == self.unk_token_id:
|
|
toktype = gguf.TokenType.UNKNOWN
|
|
elif token_id in self.special_ids:
|
|
toktype = gguf.TokenType.CONTROL
|
|
elif len(token) == 6 and token.startswith("<0x") and token.endswith(">"):
|
|
toktype = gguf.TokenType.BYTE
|
|
|
|
return toktype
|
|
|
|
def get_token_score(self, token_id: int) -> float:
|
|
if self.spm is not None and token_id < self.spm.vocab_size():
|
|
return cast(float, self.spm.get_score(token_id))
|
|
return 0.0
|
|
|
|
def added_tokens(self) -> Iterable[tuple[bytes, float, gguf.TokenType]]:
|
|
|
|
for text in self.added_tokens_dict:
|
|
if text in self.specials:
|
|
|
|
toktype = self.get_token_type(self.specials[text])
|
|
score = self.get_token_score(self.specials[text])
|
|
|
|
else:
|
|
toktype = gguf.TokenType.USER_DEFINED
|
|
score = -1000.0
|
|
|
|
yield text.encode("utf-8"), score, toktype
|
|
|
|
def has_newline_token(self) -> bool:
|
|
return '<0x0A>' in self.tokenizer.vocab or '\n' in self.tokenizer.vocab
|
|
|
|
def all_tokens(self) -> Iterable[tuple[bytes, float, gguf.TokenType]]:
|
|
yield from self.hf_tokens()
|
|
yield from self.added_tokens()
|
|
|
|
def get_vocab_type(self) -> str:
|
|
path_candidates = []
|
|
vocab_file = "tokenizer.model"
|
|
path_candidates.append(vocab_file)
|
|
path_candidate = find_vocab_file_path(self.fname_tokenizer, vocab_file)
|
|
if path_candidate is not None:
|
|
return "llama"
|
|
|
|
vocab_file = "vocab.json"
|
|
path_candidates.append(vocab_file)
|
|
path_candidate = find_vocab_file_path(self.fname_tokenizer, vocab_file)
|
|
if path_candidate is not None:
|
|
return "gpt2"
|
|
|
|
vocab_file = "tokenizer.json"
|
|
path_candidates.append(vocab_file)
|
|
path_candidate = find_vocab_file_path(self.fname_tokenizer, vocab_file)
|
|
if path_candidate:
|
|
if not self.has_newline_token():
|
|
return "gpt2"
|
|
return "llama"
|
|
|
|
raise FileNotFoundError(
|
|
f"Could not find {path_candidates} in {self.fname_tokenizer} or its parent; "
|
|
"if it's in another directory, pass the directory as --vocab-dir"
|
|
)
|
|
|
|
def __repr__(self) -> str:
|
|
return f"<VocabLoader with {self.vocab_size_base} base tokens and {len(self.added_tokens_dict)} added tokens>"
|
|
|
|
|
|
Vocab: TypeAlias = 'VocabLoader'
|
|
|
|
|
|
#
|
|
# 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 individual 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 determine
|
|
# 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('<Q', fp.read(8))
|
|
header: dict[str, dict[str, Any]] = json.loads(fp.read(header_size))
|
|
# Use mmap for the actual data to avoid race conditions with the file offset.
|
|
mapped = memoryview(mmap.mmap(fp.fileno(), 0, access=mmap.ACCESS_READ))
|
|
byte_buf = mapped[8 + header_size:]
|
|
|
|
def convert(info: dict[str, Any]) -> 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('<Q', first8)[0] < 16 * 1024 * 1024:
|
|
# Probably safetensors
|
|
return lazy_load_safetensors_file(fp, path)
|
|
else:
|
|
raise ValueError(f"unknown format: {path}")
|
|
|
|
|
|
In = TypeVar('In')
|
|
Out = TypeVar('Out')
|
|
|
|
|
|
def bounded_parallel_map(func: Callable[[In], Out], iterable: Iterable[In], concurrency: int, max_workers: int | None = None, use_processpool_executor: bool = False) -> 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, pad_vocab: bool = False) -> None:
|
|
if params.n_vocab != vocab.vocab_size:
|
|
if params.n_vocab == vocab.vocab_size:
|
|
print("Ignoring added_tokens.json since model matches vocab size without it.")
|
|
vocab.added_tokens_dict = OrderedDict()
|
|
vocab.vocab_size = vocab.vocab_size
|
|
return
|
|
|
|
if pad_vocab and params.n_vocab > vocab.vocab_size:
|
|
pad_count = params.n_vocab - vocab.vocab_size
|
|
print(f'Padding vocab with {pad_count} token(s) - <dummy00001> through <dummy{pad_count:05}>')
|
|
for i in range(1, (params.n_vocab - vocab.vocab_size) + 1):
|
|
vocab.added_tokens_dict[f'<dummy{i:05}>'] = -1
|
|
vocab.vocab_size = params.n_vocab
|
|
return
|
|
msg = f"Vocab size mismatch (model has {params.n_vocab}, but {vocab.fname_tokenizer}"
|
|
msg += f" has {vocab.vocab_size})."
|
|
if vocab.vocab_size < params.n_vocab < vocab.vocab_size + 20:
|
|
msg += f" Most likely you are missing added_tokens.json (should be in {vocab.fname_tokenizer.parent})."
|
|
if vocab.vocab_size < params.n_vocab:
|
|
msg += " Possibly try using the --padvocab option."
|
|
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)
|
|
|
|
if params.n_experts:
|
|
self.gguf.add_expert_count(params.n_experts)
|
|
|
|
if params.n_experts_used:
|
|
self.gguf.add_expert_used_count(params.n_experts_used)
|
|
|
|
if params.f_norm_eps:
|
|
self.gguf.add_layer_norm_rms_eps(params.f_norm_eps)
|
|
else:
|
|
raise ValueError('f_norm_eps is None')
|
|
|
|
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)
|
|
|
|
vocab_type = vocab.get_vocab_type()
|
|
self.gguf.add_tokenizer_model(vocab_type)
|
|
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,
|
|
pad_vocab: bool = False,
|
|
) -> None:
|
|
check_vocab_size(params, vocab, pad_vocab = pad_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,
|
|
pad_vocab: bool = False,
|
|
) -> None:
|
|
check_vocab_size(params, vocab, pad_vocab = pad_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 find_vocab_file_path(path: Path, vocab_file: str) -> Optional[Path]:
|
|
path2 = path / vocab_file
|
|
# Use `.parent` instead of /.. to handle the symlink case better.
|
|
path3 = path.parent / vocab_file
|
|
|
|
if path2.exists():
|
|
return path2
|
|
if path3.exists():
|
|
return path3
|
|
|
|
return None
|
|
|
|
|
|
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, help="Path to scale awq cache file", default=None)
|
|
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)")
|
|
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")
|
|
parser.add_argument("--padvocab", action="store_true", help="add pad tokens when model vocab expects more than tokenizer metadata provides")
|
|
|
|
args = parser.parse_args(args_in)
|
|
if args.awq_path:
|
|
sys.path.insert(1, str(Path(__file__).parent / 'awq-py'))
|
|
from awq.apply_awq import add_scale_weights
|
|
tmp_model_path = args.model / "weighted_model"
|
|
if tmp_model_path.is_dir():
|
|
print(f"{tmp_model_path} exists as a weighted model.")
|
|
else:
|
|
tmp_model_path.mkdir(parents=True, exist_ok=True)
|
|
print("Saving new weighted model ...")
|
|
add_scale_weights(str(args.model), str(args.awq_path), str(tmp_model_path))
|
|
print(f"Saved weighted model at {tmp_model_path}.")
|
|
args.model = 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 = VocabLoader(params, args.vocab_dir or args.model)
|
|
special_vocab = gguf.SpecialVocab(model_plus.paths[0].parent,
|
|
load_merges = True,
|
|
n_vocab = vocab.vocab_size)
|
|
outfile = args.outfile
|
|
OutputFile.write_vocab_only(outfile, params, vocab, special_vocab,
|
|
endianess = endianess, pad_vocab = args.padvocab)
|
|
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 = VocabLoader(params, vocab_dir)
|
|
|
|
# FIXME: Try to respect vocab_dir somehow?
|
|
print(f"Vocab info: {vocab}")
|
|
special_vocab = gguf.SpecialVocab(model_plus.paths[0].parent,
|
|
load_merges = True,
|
|
n_vocab = vocab.vocab_size)
|
|
|
|
print(f"Special vocab info: {special_vocab}")
|
|
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, pad_vocab = args.padvocab)
|
|
print(f"Wrote {outfile}")
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|