mirror of
https://github.com/ggerganov/llama.cpp.git
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96 lines
4.0 KiB
Python
Executable File
96 lines
4.0 KiB
Python
Executable File
#!/usr/bin/env python3
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import logging
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import argparse
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import os
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import sys
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from pathlib import Path
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# Necessary to load the local gguf package
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if "NO_LOCAL_GGUF" not in os.environ and (Path(__file__).parent.parent.parent / 'gguf-py').exists():
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sys.path.insert(0, str(Path(__file__).parent.parent))
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from gguf import GGUFReader # noqa: E402
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logger = logging.getLogger("gguf-set-metadata")
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def minimal_example(filename: str) -> None:
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reader = GGUFReader(filename, 'r+')
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field = reader.fields['tokenizer.ggml.bos_token_id']
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if field is None:
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return
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part_index = field.data[0]
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field.parts[part_index][0] = 2 # Set tokenizer.ggml.bos_token_id to 2
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#
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# So what's this field.data thing? It's helpful because field.parts contains
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# _every_ part of the GGUF field. For example, tokenizer.ggml.bos_token_id consists
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# of:
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#
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# Part index 0: Key length (27)
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# Part index 1: Key data ("tokenizer.ggml.bos_token_id")
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# Part index 2: Field type (4, the id for GGUFValueType.UINT32)
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# Part index 3: Field value
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#
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# Note also that each part is an NDArray slice, so even a part that
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# is only a single value like the key length will be a NDArray of
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# the key length type (numpy.uint32).
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#
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# The .data attribute in the Field is a list of relevant part indexes
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# and doesn't contain internal GGUF details like the key length part.
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# In this case, .data will be [3] - just the part index of the
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# field value itself.
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def set_metadata(reader: GGUFReader, args: argparse.Namespace) -> None:
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field = reader.get_field(args.key)
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if field is None:
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logger.error(f'! Field {repr(args.key)} not found')
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sys.exit(1)
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# Note that field.types is a list of types. This is because the GGUF
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# format supports arrays. For example, an array of UINT32 would
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# look like [GGUFValueType.ARRAY, GGUFValueType.UINT32]
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handler = reader.gguf_scalar_to_np.get(field.types[0]) if field.types else None
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if handler is None:
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logger.error(f'! This tool only supports changing simple values, {repr(args.key)} has unsupported type {field.types}')
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sys.exit(1)
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current_value = field.parts[field.data[0]][0]
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new_value = handler(args.value)
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logger.info(f'* Preparing to change field {repr(args.key)} from {current_value} to {new_value}')
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if current_value == new_value:
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logger.info(f'- Key {repr(args.key)} already set to requested value {current_value}')
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sys.exit(0)
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if args.dry_run:
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sys.exit(0)
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if not args.force:
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logger.warning('*** Warning *** Warning *** Warning **')
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logger.warning('* Changing fields in a GGUF file can make it unusable. Proceed at your own risk.')
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logger.warning('* Enter exactly YES if you are positive you want to proceed:')
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response = input('YES, I am sure> ')
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if response != 'YES':
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logger.info("You didn't enter YES. Okay then, see ya!")
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sys.exit(0)
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field.parts[field.data[0]][0] = new_value
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logger.info('* Field changed. Successful completion.')
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def main() -> None:
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parser = argparse.ArgumentParser(description="Set a simple value in GGUF file metadata")
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parser.add_argument("model", type=str, help="GGUF format model filename")
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parser.add_argument("key", type=str, help="Metadata key to set")
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parser.add_argument("value", type=str, help="Metadata value to set")
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parser.add_argument("--dry-run", action="store_true", help="Don't actually change anything")
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parser.add_argument("--force", action="store_true", help="Change the field without confirmation")
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parser.add_argument("--verbose", action="store_true", help="increase output verbosity")
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args = parser.parse_args(None if len(sys.argv) > 1 else ["--help"])
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logging.basicConfig(level=logging.DEBUG if args.verbose else logging.INFO)
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logger.info(f'* Loading: {args.model}')
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reader = GGUFReader(args.model, 'r' if args.dry_run else 'r+')
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set_metadata(reader, args)
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if __name__ == '__main__':
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main()
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