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Add rank settings for fsdp

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This commit is contained in:
Shellishack 2025-09-06 19:58:42 +08:00
parent 1a8221507b
commit d006ee2553
1 changed files with 15 additions and 4 deletions
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19
comfy/model_management.py
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@ -16,6 +16,7 @@
along with this program. If not, see <https://www.gnu.org/licenses/>.
"""
import os
import psutil
import logging
from enum import Enum
@ -424,7 +425,7 @@ def module_size(module):
module_mem += t.nelement() * t.element_size()
return module_mem
def is_fsdp():
def is_fsdp_enabled():
if args.fsdp:
fsdp = True
return fsdp
@ -438,7 +439,11 @@ def init_distributed():
world_size = get_world_size()
if world_size > 1 and not torch.distributed.is_initialized():
torch.distributed.init_process_group(backend="nccl", world_size=world_size)
rank = int(os.getenv("RANK"), 0)
local_rank = int(os.getenv("LOCAL_RANK"), 0)
torch.cuda.set_device(local_rank)
torch.distributed.init_process_group(backend="nccl", world_size=world_size, rank=rank)
def get_distributed_model(
model,
@ -466,16 +471,22 @@ def get_distributed_model(
return model
class LoadedModel:
def __init__(self, model):
def __init__(
self,
model,
# use_fsdp=False
):
self._set_model(model)
self.device = model.load_device
self.real_model = None
self.currently_used = True
self.model_finalizer = None
self._patcher_finalizer = None
# self.use_fsdp = use_fsdp
self.use_fsdp = is_fsdp_enabled()
def _set_model(self, model):
if is_fsdp():
if self.use_fsdp and is_fsdp_enabled():
init_distributed()
dist_model = get_distributed_model(model)
self._model = weakref.ref(dist_model)