This commit is contained in:
Disty0
2025-10-27 21:32:52 +03:00
parent 5ab9a5a15d
commit a830c0a7e0
+17 -9
View File
@@ -13,16 +13,20 @@ def map_keys(key: str, key_mapping: dict) -> str:
return new_key
def load_safetensors(files: list[str], state_dict: dict, key_mapping: dict = None, device: torch.device = "cpu") -> dict:
def load_safetensors(files: list[str], state_dict: dict = None, key_mapping: dict = None, device: torch.device = "cpu") -> dict:
from safetensors.torch import safe_open
if state_dict is None:
state_dict = {}
for fn in files:
with safe_open(fn, framework="pt", device=str(device)) as f:
for key in f.keys():
state_dict[map_keys(key, key_mapping)] = f.get_tensor(key)
def load_threaded(files: list[str], key_mapping: dict = None, device: torch.device = "cpu", state_dict: dict = {}) -> dict:
def load_threaded(files: list[str], state_dict: dict = None, key_mapping: dict = None, device: torch.device = "cpu") -> dict:
future_items = {}
if state_dict is None:
state_dict = {}
with concurrent.futures.ThreadPoolExecutor(max_workers=4) as executor:
for fn in files:
future_items[executor.submit(load_safetensors, [fn], key_mapping=key_mapping, device=device, state_dict=state_dict)] = fn
@@ -30,25 +34,29 @@ def load_threaded(files: list[str], key_mapping: dict = None, device: torch.devi
future.result()
def load_streamer(files: list[str], state_dict: dict, key_mapping: dict = None, device: torch.device = "cpu") -> dict:
def load_streamer(files: list[str], state_dict: dict = None, key_mapping: dict = None, device: torch.device = "cpu") -> dict:
# requires pip install runai_model_streamer
from runai_model_streamer import SafetensorsStreamer
if state_dict is None:
state_dict = {}
with SafetensorsStreamer() as streamer:
streamer.stream_files(files)
for key, tensor in streamer.get_tensors():
state_dict[map_keys(key, key_mapping)] = tensor.to(device)
def load_files(files: list[str], method: str = None, key_mapping: dict = None, device: torch.device = "cpu") -> dict:
def load_files(files: list[str], state_dict: dict = None, key_mapping: dict = None, device: torch.device = "cpu", method: str = None) -> dict:
# note: files is list-of-files within a module for chunked loading, not accross model
method = method or 'safetensors'
state_dict = {}
if method is None:
method = 'safetensors'
if state_dict is None:
state_dict = {}
if method == 'safetensors':
load_safetensors(files, key_mapping=key_mapping, device=device, state_dict=state_dict)
load_safetensors(files, state_dict=state_dict, key_mapping=key_mapping, device=device)
elif method == 'threaded':
load_threaded(files, key_mapping=key_mapping, device=device, state_dict=state_dict)
load_threaded(files, state_dict=state_dict, key_mapping=key_mapping, device=device)
elif method == 'streamer':
load_streamer(files, key_mapping=key_mapping, device=device, state_dict=state_dict)
load_streamer(files, state_dict=state_dict, key_mapping=key_mapping, device=device)
else:
raise ValueError(f"Unsupported loading method: {method}")
return state_dict