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Improve RAM<->VRAM memory copy performance in LoRA patching and elsewhere (#6490)

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* allow model patcher to optimize away the unpatching step when feasible

* remove lazy_offloading functionality

* allow model patcher to optimize away the unpatching step when feasible

* remove lazy_offloading functionality

* do not save original weights if there is a CPU copy of state dict

* Update invokeai/backend/model_manager/load/load_base.py

Co-authored-by: Ryan Dick <ryanjdick3@gmail.com>

* documentation fixes requested during penultimate review

* add non-blocking=True parameters to several torch.nn.Module.to() calls, for slight performance increases

* fix ruff errors

* prevent crash on non-cuda-enabled systems

---------

Co-authored-by: Lincoln Stein <lstein@gmail.com>
Co-authored-by: Kent Keirsey <31807370+hipsterusername@users.noreply.github.com>
Co-authored-by: Ryan Dick <ryanjdick3@gmail.com>
This commit is contained in:
Lincoln Stein
2024-06-13 13:10:03 -04:00
committed by GitHub
parent 568a4844f7
commit a3cb5da130
7 changed files with 84 additions and 38 deletions
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18
invokeai/backend/raw_model.py
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@ -10,6 +10,20 @@ The term 'raw' was introduced to describe a wrapper around a torch.nn.Module
that adds additional methods and attributes.
"""
from abc import ABC, abstractmethod
from typing import Optional
class RawModel:
"""Base class for 'Raw' model wrappers."""
import torch
class RawModel(ABC):
"""Abstract base class for 'Raw' model wrappers."""
@abstractmethod
def to(
self,
device: Optional[torch.device] = None,
dtype: Optional[torch.dtype] = None,
non_blocking: bool = False,
) -> None:
pass