1. 问题

使用Omniverse安装Isaac sim程序后启动出现一堆红色报错。类似下面这种：

2024-12-22 00:29:35 [2,383ms] [Error] [omni.ext._impl._internal] Failed to import python module omni.isaac.core from c:\users\user\appdata\local\ov\pkg\isaac-sim-4.2.0\exts\omni.isaac.core. Error: [WinError 126] The specified module could not be found. Error loading “c:/users/user/appdata/local/ov/pkg/isaac-sim-4.2.0/exts/omni.isaac.ml_archive/pip_prebundle/torch\lib\fbgemm.dll” or one of its dependencies… Traceback:
Traceback (most recent call last):
File “c:\users/user/appdata/local/ov/pkg/isaac-sim-4.2.0/kit/kernel/py\omni\ext_impl_internal.py”, line 187, in custom_importer
return import_public(ext_module.path, ext_module.name, reload_enabled)
File “c:\users/user/appdata/local/ov/pkg/isaac-sim-4.2.0/kit/kernel/py\carb\profiler_init.py”, line 99, in wrapper
r = f(*args, **kwds)
File “c:\users/user/appdata/local/ov/pkg/isaac-sim-4.2.0/kit/kernel/py\omni\ext_impl_internal.py”, line 94, in import_public
module = import_module(module_name)
File “c:\users/user/appdata/local/ov/pkg/isaac-sim-4.2.0/kit/kernel/py\carb\profiler_init.py”, line 99, in wrapper
r = f(*args, **kwds)
File “c:\users/user/appdata/local/ov/pkg/isaac-sim-4.2.0/kit/kernel/py\omni\ext_impl\custom_importer.py”, line 76, in import_module
return importlib.import_module(name)
File “c:\users\user\appdata\local\ov\pkg\isaac-sim-4.2.0\kit\python\lib\importlib_init.py”, line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File “”, line 1050, in _gcd_import
File “”, line 1027, in _find_and_load
File “”, line 1006, in _find_and_load_unlocked
File “”, line 688, in _load_unlocked
File “”, line 883, in exec_module
File “”, line 241, in _call_with_frames_removed
File “c:/users/user/appdata/local/ov/pkg/isaac-sim-4.2.0/exts/omni.isaac.core/omni/isaac/core/init.py”, line 11, in
from omni.isaac.core.physics_context.physics_context import PhysicsContext
File “c:/users/user/appdata/local/ov/pkg/isaac-sim-4.2.0/exts/omni.isaac.core/omni/isaac/core/physics_context/init.py”, line 9, in
from omni.isaac.core.physics_context.physics_context import PhysicsContext
File “c:/users/user/appdata/local/ov/pkg/isaac-sim-4.2.0/exts/omni.isaac.core/omni/isaac/core/physics_context/physics_context.py”, line 15, in
from omni.isaac.core.utils.prims import get_prim_at_path, get_prim_path, is_prim_path_valid
File “c:/users/user/appdata/local/ov/pkg/isaac-sim-4.2.0/exts/omni.isaac.core/omni/isaac/core/utils/prims.py”, line 24, in
from omni.isaac.core.utils.types import SDF_type_to_Gf
File “c:/users/user/appdata/local/ov/pkg/isaac-sim-4.2.0/exts/omni.isaac.core/omni/isaac/core/utils/types.py”, line 12, in
import torch
File “c:/users/user/appdata/local/ov/pkg/isaac-sim-4.2.0/exts/omni.isaac.ml_archive/pip_prebundle/torch/init.py”, line 148, in
raise err
OSError: [WinError 126] The specified module could not be found. Error loading “c:/users/user/appdata/local/ov/pkg/isaac-sim-4.2.0/exts/omni.isaac.ml_archive/pip_prebundle/torch\lib\fbgemm.dll” or one of its dependencies.
2024-12-22 00:29:35 [2,383ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: ‘omni.isaac.core’ in ‘c:\users\user\appdata\local\ov\pkg\isaac-sim-4.2.0\exts\omni.isaac.core’ failed to load.
At:
c:\users/user/appdata/local/ov/pkg/isaac-sim-4.2.0/kit/kernel/py\omni\ext_impl_internal.py(213): startup
c:\users/user/appdata/local/ov/pkg/isaac-sim-4.2.0/kit/kernel/py\omni\ext_impl_internal.py(328): startup_extension

2.原因分析

查阅论坛后发现，该问题只在Isaac sim 4.2.0版本出现，早期版本正常。

3.问题解决

安装vs2022，勾选下载：MSVC v143 - VS 2022 C++ x64/86 build tools

安装成功后再次启动isaac sim，终端红色报错消失。