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from __future__ import annotations
from typing import TYPE_CHECKING
import numpy as np
from ..upscale.auto_split import Split, Tiler, auto_split
from .utils import np2tensor, safe_cuda_cache_empty, tensor2np
if TYPE_CHECKING:
from nodes.impl.pytorch.types import PyTorchModel
import torch
def pytorch_auto_split(img: np.ndarray, model: PyTorchModel, device: torch.device, use_fp16: bool, tiler: Tiler) -> np.ndarray:
model = model.to(device)
if use_fp16:
model = model.half()
# model = model.half() if use_fp16 else model.float()
def upscale(img: np.ndarray, _):
img_tensor = np2tensor(img, change_range=True)
d_img = None
try:
d_img = img_tensor.to(device)
d_img = d_img.half() if use_fp16 else d_img.float()
result = model(d_img)
result = tensor2np(result.detach().cpu().detach(), change_range=False, imtype=np.float32)
del d_img
return result
except RuntimeError as e:
# Check to see if its actually the CUDA out of memory error
if "allocate" in str(e) or "CUDA" in str(e):
# Collect garbage (clear VRAM)
if d_img is not None:
try:
d_img.detach().cpu()
except:
pass
del d_img
safe_cuda_cache_empty()
return Split()
else:
# Re-raise the exception if not an OOM error
raise
try:
return auto_split(img, upscale, tiler)
finally:
del model
del device
safe_cuda_cache_empty()