Reset accelerator when INC_TARGET_DEVICE is set in code (#2168)

Signed-off-by: Kaihui-intel <kaihui.tang@intel.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Sun, Xuehao <xuehao.sun@intel.com>

Author: 4 people

neural_compressor/torch/utils/environ.py

@@ -150,6 +150,10 @@ def get_accelerator(device_name="auto"):
     from neural_compressor.torch.utils.auto_accelerator import auto_detect_accelerator
 
     accelerator = auto_detect_accelerator(device_name)
+    inc_target_device = os.environ.get("INC_TARGET_DEVICE", None)
+    if inc_target_device is not None and accelerator._name != inc_target_device.lower():
+        auto_detect_accelerator.cache_clear()
+        accelerator = auto_detect_accelerator(device_name)
     return accelerator