fix(model): compatible meshgrid and CUDA OOM error

hubconf.py

@@ -8,7 +8,7 @@ Usage example:
 """
 dependencies = ["torch"]
 
-from yolox.models import (  # noqa: F401, E402
+from yolox.models import (  # isort:skip  # noqa: F401, E402
     yolox_tiny,
     yolox_nano,
     yolox_s,

yolox/models/yolo_head.py

@@ -9,7 +9,7 @@ import torch
 import torch.nn as nn
 import torch.nn.functional as F
 
-from yolox.utils import bboxes_iou
+from yolox.utils import bboxes_iou, meshgrid
 
 from .losses import IOUloss
 from .network_blocks import BaseConv, DWConv
@@ -220,7 +220,7 @@ class YOLOXHead(nn.Module):
         n_ch = 5 + self.num_classes
         hsize, wsize = output.shape[-2:]
         if grid.shape[2:4] != output.shape[2:4]:
-            yv, xv = torch.meshgrid([torch.arange(hsize), torch.arange(wsize)], indexing="ij")
+            yv, xv = meshgrid([torch.arange(hsize), torch.arange(wsize)])
             grid = torch.stack((xv, yv), 2).view(1, 1, hsize, wsize, 2).type(dtype)
             self.grids[k] = grid
 
@@ -237,7 +237,7 @@ class YOLOXHead(nn.Module):
         grids = []
         strides = []
         for (hsize, wsize), stride in zip(self.hw, self.strides):
-            yv, xv = torch.meshgrid([torch.arange(hsize), torch.arange(wsize)], indexing="ij")
+            yv, xv = meshgrid([torch.arange(hsize), torch.arange(wsize)])
             grid = torch.stack((xv, yv), 2).view(1, -1, 2)
             grids.append(grid)
             shape = grid.shape[:2]
@@ -321,7 +321,11 @@ class YOLOXHead(nn.Module):
                         labels,
                         imgs,
                     )
-                except RuntimeError:
+                except RuntimeError as e:
+                    # TODO: the string might change, consider a better way
+                    if "CUDA out of memory. " not in str(e):
+                        raise  # RuntimeError might not caused by CUDA OOM
+
                     logger.error(
                         "OOM RuntimeError is raised due to the huge memory cost during label assignment. \
                            CPU mode is applied in this batch. If you want to avoid this issue, \

yolox/utils/__init__.py

@@ -5,6 +5,7 @@
 from .allreduce_norm import *
 from .boxes import *
 from .checkpoint import load_ckpt, save_checkpoint
+from .compat import meshgrid
 from .demo_utils import *
 from .dist import *
 from .ema import *

yolox/utils/compat.py

+#!/usr/bin/env python3
+# -*- coding:utf-8 -*-
+
+import torch
+
+_TORCH_VER = [int(x) for x in torch.__version__.split(".")[:2]]
+
+__all__ = ["meshgrid"]
+
+
+def meshgrid(*tensors):
+    if _TORCH_VER >= [1, 10]:
+        return torch.meshgrid(*tensors, indexing="ij")
+    else:
+        return torch.meshgrid(*tensors)