RuntimeError: Ninja is required to load C++ extensions

[qiuxin610]

CRM.pth: 100%|███████████████████████████████████████████████████████████████████████| 476M/476M [13:35<00:00, 583kB/s]
Traceback (most recent call last):
File "E:\project\CRM\app.py", line 129, in
model = CRM(specs).to(args.device)
File "E:\project\CRM\model\crm\model.py", line 59, in init
self.renderer = Renderer(tet_grid_size=self.tet_grid_size, camera_angle_num=self.camera_angle_num,
File "E:\project\CRM\util\renderer.py", line 15, in init
self.glctx = dr.RasterizeCudaContext()
File "E:\project\CRM\python\lib\site-packages\nvdiffrast\torch\ops.py", line 177, in init
self.cpp_wrapper = _get_plugin().RasterizeCRStateWrapper(cuda_device_idx)
File "E:\project\CRM\python\lib\site-packages\nvdiffrast\torch\ops.py", line 118, in _get_plugin
torch.utils.cpp_extension.load(name=plugin_name, sources=source_paths, extra_cflags=opts, extra_cuda_cflags=opts+['-lineinfo'], extra_ldflags=ldflags, with_cuda=True, verbose=False)
File "E:\project\CRM\python\lib\site-packages\torch\utils\cpp_extension.py", line 1306, in load
return _jit_compile(
File "E:\project\CRM\python\lib\site-packages\torch\utils\cpp_extension.py", line 1710, in _jit_compile
_write_ninja_file_and_build_library(
File "E:\project\CRM\python\lib\site-packages\torch\utils\cpp_extension.py", line 1793, in _write_ninja_file_and_build_library
verify_ninja_availability()
File "E:\project\CRM\python\lib\site-packages\torch\utils\cpp_extension.py", line 1842, in verify_ninja_availability
raise RuntimeError("Ninja is required to load C++ extensions")
RuntimeError: Ninja is required to load C++ extensions
E:\project\CRM>python\python.exe -m pip install Ninja
Looking in indexes: https://mirrors.aliyun.com/pypi/simple/
Requirement already satisfied: Ninja in e:\project\crm\python\lib\site-packages (1.11.1.1)

[thuwzy]

What is the version of your python, pytorch and cuda? It seems to be related with the cuda version.

[qiuxin610]

python 3.9.12 torch 2.2.0+cu121 cuda 12.3

[thuwzy]

My testing environment is torch==1.13.0+cu117. You can try torch 1.x?

[qiuxin610]

ok The problem is solved. I found a winodws ninja.exe that can run in 2.2.0+cu121.