mirror of
https://github.com/oobabooga/text-generation-webui.git
synced 2024-11-22 08:07:56 +01:00
224 lines
8.3 KiB
Python
224 lines
8.3 KiB
Python
import json
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import re
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from pathlib import Path
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import yaml
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from modules import loaders, metadata_gguf, shared, ui
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def get_fallback_settings():
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return {
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'wbits': 'None',
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'groupsize': 'None',
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'desc_act': False,
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'model_type': 'None',
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'max_seq_len': 2048,
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'n_ctx': 2048,
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'rope_freq_base': 0,
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'compress_pos_emb': 1,
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'truncation_length': shared.settings['truncation_length'],
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'skip_special_tokens': shared.settings['skip_special_tokens'],
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'custom_stopping_strings': shared.settings['custom_stopping_strings'],
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}
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def get_model_metadata(model):
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model_settings = {}
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# Get settings from models/config.yaml and models/config-user.yaml
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settings = shared.model_config
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for pat in settings:
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if re.match(pat.lower(), model.lower()):
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for k in settings[pat]:
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model_settings[k] = settings[pat][k]
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if 'loader' not in model_settings:
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loader = infer_loader(model, model_settings)
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if 'wbits' in model_settings and type(model_settings['wbits']) is int and model_settings['wbits'] > 0:
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loader = 'AutoGPTQ'
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model_settings['loader'] = loader
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# Read GGUF metadata
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if model_settings['loader'] in ['llama.cpp', 'llamacpp_HF', 'ctransformers']:
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path = Path(f'{shared.args.model_dir}/{model}')
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if path.is_file():
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model_file = path
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else:
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model_file = list(path.glob('*.gguf'))[0]
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metadata = metadata_gguf.load_metadata(model_file)
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if 'llama.context_length' in metadata:
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model_settings['n_ctx'] = metadata['llama.context_length']
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if 'llama.rope.scale_linear' in metadata:
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model_settings['compress_pos_emb'] = metadata['llama.rope.scale_linear']
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if 'llama.rope.freq_base' in metadata:
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model_settings['rope_freq_base'] = metadata['llama.rope.freq_base']
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else:
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# Read transformers metadata
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path = Path(f'{shared.args.model_dir}/{model}/config.json')
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if path.exists():
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metadata = json.loads(open(path, 'r').read())
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if 'max_position_embeddings' in metadata:
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model_settings['truncation_length'] = metadata['max_position_embeddings']
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model_settings['max_seq_len'] = metadata['max_position_embeddings']
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if 'rope_theta' in metadata:
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model_settings['rope_freq_base'] = metadata['rope_theta']
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if 'rope_scaling' in metadata and type(metadata['rope_scaling']) is dict and all(key in metadata['rope_scaling'] for key in ('type', 'factor')):
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if metadata['rope_scaling']['type'] == 'linear':
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model_settings['compress_pos_emb'] = metadata['rope_scaling']['factor']
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if 'quantization_config' in metadata:
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if 'bits' in metadata['quantization_config']:
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model_settings['wbits'] = metadata['quantization_config']['bits']
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if 'group_size' in metadata['quantization_config']:
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model_settings['groupsize'] = metadata['quantization_config']['group_size']
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if 'desc_act' in metadata['quantization_config']:
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model_settings['desc_act'] = metadata['quantization_config']['desc_act']
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# Read AutoGPTQ metadata
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path = Path(f'{shared.args.model_dir}/{model}/quantize_config.json')
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if path.exists():
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metadata = json.loads(open(path, 'r').read())
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if 'bits' in metadata:
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model_settings['wbits'] = metadata['bits']
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if 'group_size' in metadata:
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model_settings['groupsize'] = metadata['group_size']
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if 'desc_act' in metadata:
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model_settings['desc_act'] = metadata['desc_act']
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# Ignore rope_freq_base if set to the default value
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if 'rope_freq_base' in model_settings and model_settings['rope_freq_base'] == 10000:
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model_settings.pop('rope_freq_base')
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# Apply user settings from models/config-user.yaml
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settings = shared.user_config
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for pat in settings:
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if re.match(pat.lower(), model.lower()):
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for k in settings[pat]:
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model_settings[k] = settings[pat][k]
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return model_settings
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def infer_loader(model_name, model_settings):
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path_to_model = Path(f'{shared.args.model_dir}/{model_name}')
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if not path_to_model.exists():
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loader = None
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elif (path_to_model / 'quantize_config.json').exists() or ('wbits' in model_settings and type(model_settings['wbits']) is int and model_settings['wbits'] > 0):
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loader = 'AutoGPTQ'
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elif (path_to_model / 'quant_config.json').exists() or re.match(r'.*-awq', model_name.lower()):
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loader = 'AutoAWQ'
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elif len(list(path_to_model.glob('*.gguf'))) > 0:
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loader = 'llama.cpp'
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elif re.match(r'.*\.gguf', model_name.lower()):
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loader = 'llama.cpp'
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elif re.match(r'.*rwkv.*\.pth', model_name.lower()):
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loader = 'RWKV'
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elif re.match(r'.*exl2', model_name.lower()):
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loader = 'ExLlamav2_HF'
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else:
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loader = 'Transformers'
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return loader
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# UI: update the command-line arguments based on the interface values
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def update_model_parameters(state, initial=False):
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elements = ui.list_model_elements() # the names of the parameters
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gpu_memories = []
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for i, element in enumerate(elements):
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if element not in state:
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continue
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value = state[element]
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if element.startswith('gpu_memory'):
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gpu_memories.append(value)
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continue
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if initial and element in shared.provided_arguments:
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continue
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# Setting null defaults
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if element in ['wbits', 'groupsize', 'model_type'] and value == 'None':
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value = vars(shared.args_defaults)[element]
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elif element in ['cpu_memory'] and value == 0:
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value = vars(shared.args_defaults)[element]
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# Making some simple conversions
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if element in ['wbits', 'groupsize', 'pre_layer']:
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value = int(value)
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elif element == 'cpu_memory' and value is not None:
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value = f"{value}MiB"
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if element in ['pre_layer']:
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value = [value] if value > 0 else None
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setattr(shared.args, element, value)
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found_positive = False
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for i in gpu_memories:
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if i > 0:
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found_positive = True
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break
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if not (initial and vars(shared.args)['gpu_memory'] != vars(shared.args_defaults)['gpu_memory']):
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if found_positive:
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shared.args.gpu_memory = [f"{i}MiB" for i in gpu_memories]
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else:
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shared.args.gpu_memory = None
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# UI: update the state variable with the model settings
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def apply_model_settings_to_state(model, state):
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model_settings = get_model_metadata(model)
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if 'loader' in model_settings:
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loader = model_settings.pop('loader')
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# If the user is using an alternative loader for the same model type, let them keep using it
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if not (loader == 'AutoGPTQ' and state['loader'] in ['GPTQ-for-LLaMa', 'ExLlama', 'ExLlama_HF', 'ExLlamav2', 'ExLlamav2_HF']) and not (loader == 'llama.cpp' and state['loader'] in ['llamacpp_HF', 'ctransformers']):
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state['loader'] = loader
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for k in model_settings:
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if k in state:
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if k in ['wbits', 'groupsize']:
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state[k] = str(model_settings[k])
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else:
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state[k] = model_settings[k]
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return state
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# Save the settings for this model to models/config-user.yaml
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def save_model_settings(model, state):
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if model == 'None':
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yield ("Not saving the settings because no model is loaded.")
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return
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with Path(f'{shared.args.model_dir}/config-user.yaml') as p:
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if p.exists():
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user_config = yaml.safe_load(open(p, 'r').read())
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else:
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user_config = {}
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model_regex = model + '$' # For exact matches
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if model_regex not in user_config:
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user_config[model_regex] = {}
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for k in ui.list_model_elements():
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if k == 'loader' or k in loaders.loaders_and_params[state['loader']]:
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user_config[model_regex][k] = state[k]
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shared.user_config = user_config
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output = yaml.dump(user_config, sort_keys=False)
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with open(p, 'w') as f:
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f.write(output)
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yield (f"Settings for `{model}` saved to `{p}`.")
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