update qwen3_vl conv layout (ncdhw to ndhwc)

vllm/model_executor/models/qwen3_vl.py

@@ -27,6 +27,7 @@ from collections.abc import Iterable, Mapping, Sequence
 from functools import partial
 from typing import Any, Callable, Optional, Union
 
+import os
 import numpy as np
 import torch
 import torch.nn as nn
@@ -116,6 +117,8 @@ class Qwen3_VisionPatchEmbed(nn.Module):
         L, C = x.shape
         x = x.view(L, -1, self.temporal_patch_size, self.patch_size,
                    self.patch_size)
+        if os.environ.get('PYTORCH_MIOPEN_SUGGEST_NDHWC') == '1':
+            x = x.to(memory_format=torch.channels_last_3d)
         x = self.proj(x).view(L, self.hidden_size)
         return x