diff options
Diffstat (limited to 'gguf-py/scripts/gguf-convert-endian.py')
| -rwxr-xr-x | gguf-py/scripts/gguf-convert-endian.py | 94 |
1 files changed, 58 insertions, 36 deletions
diff --git a/gguf-py/scripts/gguf-convert-endian.py b/gguf-py/scripts/gguf-convert-endian.py index 10a16ad0..b698af0f 100755 --- a/gguf-py/scripts/gguf-convert-endian.py +++ b/gguf-py/scripts/gguf-convert-endian.py @@ -1,9 +1,11 @@ #!/usr/bin/env python3 from __future__ import annotations +import logging import argparse import os import sys +from tqdm import tqdm from pathlib import Path import numpy as np @@ -14,6 +16,8 @@ if "NO_LOCAL_GGUF" not in os.environ and (Path(__file__).parent.parent.parent / import gguf +logger = logging.getLogger("gguf-convert-endian") + def convert_byteorder(reader: gguf.GGUFReader, args: argparse.Namespace) -> None: if np.uint32(1) == np.uint32(1).newbyteorder("<"): @@ -29,11 +33,11 @@ def convert_byteorder(reader: gguf.GGUFReader, args: argparse.Namespace) -> None else: file_endian = host_endian order = host_endian if args.order == "native" else args.order - print(f"* Host is {host_endian.upper()} endian, GGUF file seems to be {file_endian.upper()} endian") + logger.info(f"* Host is {host_endian.upper()} endian, GGUF file seems to be {file_endian.upper()} endian") if file_endian == order: - print(f"* File is already {order.upper()} endian. Nothing to do.") + logger.info(f"* File is already {order.upper()} endian. Nothing to do.") sys.exit(0) - print("* Checking tensors for conversion compatibility") + logger.info("* Checking tensors for conversion compatibility") for tensor in reader.tensors: if tensor.tensor_type not in ( gguf.GGMLQuantizationType.F32, @@ -41,51 +45,64 @@ def convert_byteorder(reader: gguf.GGUFReader, args: argparse.Namespace) -> None gguf.GGMLQuantizationType.Q8_0, ): raise ValueError(f"Cannot handle type {tensor.tensor_type.name} for tensor {repr(tensor.name)}") - print(f"* Preparing to convert from {file_endian.upper()} to {order.upper()}") + logger.info(f"* Preparing to convert from {file_endian.upper()} to {order.upper()}") if args.dry_run: return - print("\n*** Warning *** Warning *** Warning **") - print("* This conversion process may damage the file. Ensure you have a backup.") + logger.warning("*** Warning *** Warning *** Warning **") + logger.warning("* This conversion process may damage the file. Ensure you have a backup.") if order != host_endian: - print("* Requested endian differs from host, you will not be able to load the model on this machine.") - print("* The file will be modified immediately, so if conversion fails or is interrupted") - print("* the file will be corrupted. Enter exactly YES if you are positive you want to proceed:") + logger.warning("* Requested endian differs from host, you will not be able to load the model on this machine.") + logger.warning("* The file will be modified immediately, so if conversion fails or is interrupted") + logger.warning("* the file will be corrupted. Enter exactly YES if you are positive you want to proceed:") response = input("YES, I am sure> ") if response != "YES": - print("You didn't enter YES. Okay then, see ya!") + logger.warning("You didn't enter YES. Okay then, see ya!") sys.exit(0) - print(f"\n* Converting fields ({len(reader.fields)})") + logger.info(f"* Converting fields ({len(reader.fields)})") for idx, field in enumerate(reader.fields.values()): - print(f"- {idx:4}: Converting field {repr(field.name)}, part count: {len(field.parts)}") + logger.info(f"- {idx:4}: Converting field {repr(field.name)}, part count: {len(field.parts)}") for part in field.parts: part.byteswap(inplace=True) - print(f"\n* Converting tensors ({len(reader.tensors)})") - for idx, tensor in enumerate(reader.tensors): - print( - f" - {idx:4}: Converting tensor {repr(tensor.name)}, type={tensor.tensor_type.name}, " - f"elements={tensor.n_elements}... ", - end="", + logger.info(f"* Converting tensors ({len(reader.tensors)})") + + for idx, tensor in enumerate(pbar := tqdm(reader.tensors, desc="Converting tensor")): + log_message = ( + f"Converting tensor {repr(tensor.name)}, " + f"type={tensor.tensor_type.name}, " + f"elements={tensor.n_elements} " ) - tensor_type = tensor.tensor_type + + # Byte-swap each part of the tensor's field for part in tensor.field.parts: part.byteswap(inplace=True) - if tensor_type != gguf.GGMLQuantizationType.Q8_0: + + # Byte-swap tensor data if necessary + if tensor.tensor_type == gguf.GGMLQuantizationType.Q8_0: + # Handle Q8_0 tensor blocks (block_q8_0) + # Specific handling of block_q8_0 is required. + # Each block_q8_0 consists of an f16 delta (scaling factor) followed by 32 int8 quantizations. + + block_size = 34 # 34 bytes = <f16 delta scaling factor> + 32 * <int8 quant> + + n_blocks = len(tensor.data) // block_size + for block_num in (inner_pbar := tqdm(range(n_blocks), desc="Byte-swapping Blocks", leave=False)): + block_offs = block_num * block_size + + # Byte-Swap f16 sized delta field + delta = tensor.data[block_offs:block_offs + 2].view(dtype=np.uint16) + delta.byteswap(inplace=True) + + # Byte-Swap Q8 weights + if block_num % 100000 == 0: + inner_pbar.set_description(f"Byte-swapping Blocks [{(n_blocks - block_num) // n_blocks}]") + + else: + # Handle other tensor types tensor.data.byteswap(inplace=True) - print() - continue - # A Q8_0 block consists of a f16 delta followed by 32 int8 quants, so 34 bytes - block_size = 34 - n_blocks = len(tensor.data) // block_size - for block_num in range(n_blocks): - block_offs = block_num * block_size - # I know I said f16, but it doesn't matter here - any simple 16 bit type works. - delta = tensor.data[block_offs:block_offs + 2].view(dtype=np.uint16) - delta.byteswap(inplace=True) - if block_num % 100000 == 0: - print(f"[{(n_blocks - block_num) // 1000}K]", end="") - sys.stdout.flush() - print() - print("* Completion") + + pbar.set_description(log_message) + + logger.info("* Completion") def main() -> None: @@ -102,8 +119,13 @@ def main() -> None: "--dry-run", action="store_true", help="Don't actually change anything", ) + parser.add_argument("--verbose", action="store_true", help="increase output verbosity") + args = parser.parse_args(None if len(sys.argv) > 1 else ["--help"]) - print(f'* Loading: {args.model}') + + logging.basicConfig(level=logging.DEBUG if args.verbose else logging.INFO) + + logger.info(f'* Loading: {args.model}') reader = gguf.GGUFReader(args.model, 'r' if args.dry_run else 'r+') convert_byteorder(reader, args) |