# Fattal error: torch/extension.h: No such file or directory **URL:** \ **Category:** Uncategorized\ **Created:** [March 17, 2023, 3:50am UTC](https://discuss.pytorch.org/t/fattal-error-torch-extension-h-no-such-file-or-directory/175109 "2023-03-17T03:50:51Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Ron](https://discuss.pytorch.org/user_avatar/discuss.pytorch.org/ron/32/46860_2.png) [@Ron](https://discuss.pytorch.org/u/Ron)\ **Post date:** [March 17, 2023, 3:50am UTC](https://discuss.pytorch.org/t/fattal-error-torch-extension-h-no-such-file-or-directory/175109/1 "2023-03-17T03:50:51Z")
```auto OS: Ubuntu 22.04 LTS Python: 3.10.6 gcc: 1.13.0 ninja: 1.8.2 ``` ```auto Traceback (most recent call last): File "/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/utils/cpp_extension.py", line 1893, in _run_ninja_build subprocess.run( File "/usr/lib/python3.10/subprocess.py", line 524, in run raise CalledProcessError(retcode, process.args, subprocess.CalledProcessError: Command '['ninja', '-v']' returned non-zero exit status 1. The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/usr/lib/python3.10/runpy.py", line 196, in _run_module_as_main return _run_code(code, main_globals, None, File "/usr/lib/python3.10/runpy.py", line 86, in _run_code exec(code, run_globals) File "/home/ron/.vscode/extensions/ms-python.python-2023.4.1/pythonFiles/lib/python/debugpy/adapter/../../debugpy/launcher/../../debugpy/ __main__.py", line 39, in cli.main() File "/home/ron/.vscode/extensions/ms-python.python-2023.4.1/pythonFiles/lib/python/debugpy/adapter/../../debugpy/launcher/../../debugpy/../debugpy/server/cli.py", line 430, in main run() File "/home/ron/.vscode/extensions/ms-python.python-2023.4.1/pythonFiles/lib/python/debugpy/adapter/../../debugpy/launcher/../../debugpy/../debugpy/server/cli.py", line 284, in run_file runpy.run_path(target, run_name=" __main__") File "/home/ron/.vscode/extensions/ms-python.python-2023.4.1/pythonFiles/lib/python/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_runpy.py", line 321, in run_path return _run_module_code(code, init_globals, run_name, File "/home/ron/.vscode/extensions/ms-python.python-2023.4.1/pythonFiles/lib/python/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_runpy.py", line 135, in _run_module_code _run_code(code, mod_globals, init_globals, File "/home/ron/.vscode/extensions/ms-python.python-2023.4.1/pythonFiles/lib/python/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_runpy.py", line 124, in _run_code exec(code, run_globals) File "/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/sample/generate.py", line 22, in import test_ddgan as dg File "/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/./test_ddgan.py", line 14, in from score_sde.models.ncsnpp_generator_adagn import NCSNpp File "/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/./score_sde/models/ncsnpp_generator_adagn.py", line 34, in from . import utils, layers, layerspp, dense_layer File "/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/./score_sde/models/layerspp.py", line 33, in from . import up_or_down_sampling, dense_layer File "/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/./score_sde/models/up_or_down_sampling.py", line 15, in from score_sde.op import upfirdn2d File "/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/./score_sde/op/ __init__.py", line 1, in from .fused_act import FusedLeakyReLU, fused_leaky_relu File "/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/./score_sde/op/fused_act.py", line 19, in fused = load( File "/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/utils/cpp_extension.py", line 1284, in load return _jit_compile( File "/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/utils/cpp_extension.py", line 1509, in _jit_compile _write_ninja_file_and_build_library( File "/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/utils/cpp_extension.py", line 1624, in _write_ninja_file_and_build_library _run_ninja_build( File "/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/utils/cpp_extension.py", line 1909, in _run_ninja_build raise RuntimeError(message) from e RuntimeError: Error building extension 'fused': [1/3] /usr/local/cuda/bin/nvcc -DTORCH_EXTENSION_NAME=fused -DTORCH_API_INCLUDE_EXTENSION_H -DPYBIND11_COMPILER_TYPE=\"_gcc\" -DPYBIND11_STDLIB=\"_libstdcpp\" -DPYBIND11_BUILD_ABI=\"_cxxabi1011\" -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include/torch/csrc/api/include -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include/TH -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include/THC -isystem /usr/local/cuda/include -isystem /usr/include/python3.10 -D_GLIBCXX_USE_CXX11_ABI=0 -D __CUDA_NO_HALF_OPERATORS__ -D __CUDA_NO_HALF_CONVERSIONS__ -D __CUDA_NO_BFLOAT16_CONVERSIONS__ -D __CUDA_NO_HALF2_OPERATORS__ --expt-relaxed-constexpr -gencode=arch=compute_86,code=compute_86 -gencode=arch=compute_86,code=sm_86 --compiler-options '-fPIC' -std=c++17 -c '/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/score_sde/op/fused_bias_act_kernel.cu' -o fused_bias_act_kernel.cuda.o FAILED: fused_bias_act_kernel.cuda.o /usr/local/cuda/bin/nvcc -DTORCH_EXTENSION_NAME=fused -DTORCH_API_INCLUDE_EXTENSION_H -DPYBIND11_COMPILER_TYPE=\"_gcc\" -DPYBIND11_STDLIB=\"_libstdcpp\" -DPYBIND11_BUILD_ABI=\"_cxxabi1011\" -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include/torch/csrc/api/include -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include/TH -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include/THC -isystem /usr/local/cuda/include -isystem /usr/include/python3.10 -D_GLIBCXX_USE_CXX11_ABI=0 -D __CUDA_NO_HALF_OPERATORS__ -D __CUDA_NO_HALF_CONVERSIONS__ -D __CUDA_NO_BFLOAT16_CONVERSIONS__ -D __CUDA_NO_HALF2_OPERATORS__ --expt-relaxed-constexpr -gencode=arch=compute_86,code=compute_86 -gencode=arch=compute_86,code=sm_86 --compiler-options '-fPIC' -std=c++17 -c '/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/score_sde/op/fused_bias_act_kernel.cu' -o fused_bias_act_kernel.cuda.o nvcc fatal : A single input file is required for a non-link phase when an outputfile is specified [2/3] c++ -MMD -MF fused_bias_act.o.d -DTORCH_EXTENSION_NAME=fused -DTORCH_API_INCLUDE_EXTENSION_H -DPYBIND11_COMPILER_TYPE=\"_gcc\" -DPYBIND11_STDLIB=\"_libstdcpp\" -DPYBIND11_BUILD_ABI=\"_cxxabi1011\" -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include/torch/csrc/api/include -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include/TH -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include/THC -isystem /usr/local/cuda/include -isystem /usr/include/python3.10 -D_GLIBCXX_USE_CXX11_ABI=0 -fPIC -std=c++17 -c '/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/score_sde/op/fused_bias_act.cpp' -o fused_bias_act.o FAILED: fused_bias_act.o c++ -MMD -MF fused_bias_act.o.d -DTORCH_EXTENSION_NAME=fused -DTORCH_API_INCLUDE_EXTENSION_H -DPYBIND11_COMPILER_TYPE=\"_gcc\" -DPYBIND11_STDLIB=\"_libstdcpp\" -DPYBIND11_BUILD_ABI=\"_cxxabi1011\" -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include/torch/csrc/api/include -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include/TH -isystem /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/mdmgan/lib/python3.10/site-packages/torch/include/THC -isystem /usr/local/cuda/include -isystem /usr/include/python3.10 -D_GLIBCXX_USE_CXX11_ABI=0 -fPIC -std=c++17 -c '/home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/score_sde/op/fused_bias_act.cpp' -o fused_bias_act.o /home/ron/Classes/Adv Computer Vision/Proj/diffgan test/denoising-diffusion-gan/score_sde/op/fused_bias_act.cpp:8:10: fatal error: torch/extension.h: No such file or directory 8 | #include | ^ ~~~~~~~~~~~~~~~~~~ compilation terminated. ninja: build stopped: subcommand failed. ``` ```auto Package Version ------------------------ ---------- absl-py 1.4.0 anyio 3.6.2 argon2-cffi 21.3.0 argon2-cffi-bindings 21.2.0 arrow 1.2.3 asttokens 2.2.1 attrs 22.2.0 backcall 0.2.0 beautifulsoup4 4.11.2 bleach 6.0.0 blis 0.7.9 cachetools 5.3.0 catalogue 2.0.8 certifi 2022.12.7 cffi 1.15.1 charset-normalizer 3.1.0 chumpy 0.70 click 8.1.3 cmake 3.26.0 comm 0.1.2 confection 0.0.4 contourpy 1.0.7 cycler 0.11.0 cymem 2.0.7 debugpy 1.6.6 decorator 5.1.1 defusedxml 0.7.1 executing 1.2.0 fastjsonschema 2.16.3 filelock 3.10.0 fonttools 4.39.2 fqdn 1.5.1 google-auth 2.16.2 google-auth-oauthlib 0.4.6 grpcio 1.51.3 idna 3.4 ipykernel 6.21.3 ipython 8.11.0 ipython-genutils 0.2.0 ipywidgets 8.0.4 isoduration 20.11.0 jedi 0.18.2 Jinja2 3.1.2 jsonpointer 2.3 jsonschema 4.17.3 jupyter 1.0.0 jupyter_client 8.0.3 jupyter-console 6.6.3 jupyter_core 5.3.0 jupyter-events 0.6.3 jupyter_server 2.5.0 jupyter_server_terminals 0.4.4 jupyterlab-pygments 0.2.2 jupyterlab-widgets 3.0.5 kiwisolver 1.4.4 langcodes 3.3.0 lit 15.0.7 lmdb 1.4.0 Markdown 3.4.1 MarkupSafe 2.1.2 matplotlib 3.7.1 matplotlib-inline 0.1.6 mistune 2.0.5 mpmath 1.3.0 murmurhash 1.0.9 nbclassic 0.5.3 nbclient 0.7.2 nbconvert 7.2.10 nbformat 5.7.3 nest-asyncio 1.5.6 networkx 3.0 ninja 1.11.1 notebook 6.5.3 notebook_shim 0.2.2 numpy 1.23.1 nvidia-cublas-cu11 11.10.3.66 nvidia-cuda-cupti-cu11 11.7.101 nvidia-cuda-nvrtc-cu11 11.7.99 nvidia-cuda-runtime-cu11 11.7.99 nvidia-cudnn-cu11 8.5.0.96 nvidia-cufft-cu11 10.9.0.58 nvidia-curand-cu11 10.2.10.91 nvidia-cusolver-cu11 11.4.0.1 nvidia-cusparse-cu11 11.7.4.91 nvidia-nccl-cu11 2.14.3 nvidia-nvtx-cu11 11.7.91 oauthlib 3.2.2 packaging 23.0 pandocfilters 1.5.0 parso 0.8.3 pathy 0.10.1 pexpect 4.8.0 pickleshare 0.7.5 Pillow 9.4.0 pip 22.0.2 platformdirs 3.1.1 preshed 3.0.8 prometheus-client 0.16.0 prompt-toolkit 3.0.38 protobuf 3.20.3 psutil 5.9.4 ptyprocess 0.7.0 pure-eval 0.2.2 pyasn1 0.4.8 pyasn1-modules 0.2.8 pycparser 2.21 pydantic 1.10.6 Pygments 2.14.0 pyparsing 3.0.9 pyrsistent 0.19.3 python-dateutil 2.8.2 python-json-logger 2.0.7 PyYAML 6.0 pyzmq 25.0.1 qtconsole 5.4.1 QtPy 2.3.0 requests 2.28.2 requests-oauthlib 1.3.1 rfc3339-validator 0.1.4 rfc3986-validator 0.1.1 rsa 4.9 scipy 1.10.1 Send2Trash 1.8.0 setuptools 59.6.0 six 1.16.0 smart-open 6.3.0 smplx 0.1.28 sniffio 1.3.0 soupsieve 2.4 spacy 3.5.1 spacy-legacy 3.0.12 spacy-loggers 1.0.4 srsly 2.4.6 stack-data 0.6.2 sympy 1.11.1 tensorboard 2.12.0 tensorboard-data-server 0.7.0 tensorboard-plugin-wit 1.8.1 tensorboardX 2.6 terminado 0.17.1 thinc 8.1.9 tinycss2 1.2.1 torch 2.0.0 torchvision 0.15.1 tornado 6.2 tqdm 4.65.0 traitlets 5.9.0 triton 2.0.0 typer 0.7.0 typing_extensions 4.5.0 uri-template 1.2.0 urllib3 1.26.15 wasabi 1.1.1 wcwidth 0.2.6 webcolors 1.12 webencodings 0.5.1 websocket-client 1.5.1 Werkzeug 2.2.3 wheel 0.40.0 widgetsnbextension 4.0.5 ``` nvidia-smi ![Screenshot from 2023-03-16 23-40-53](https://discuss.pytorch.org/uploads/default/original/3X/2/6/26ad222f9ceaab31988d512acf226ef3ab53322e.png) nvcc --version ![Screenshot from 2023-03-16 23-41-44](https://discuss.pytorch.org/uploads/default/original/3X/6/1/61ef46393153975fa839fe7c024e5c856dc16652.png) **Question** How can I resolve this issue? My cuda-toolkit version is the latest and compatible with my driver, so that isn’t the issue. The nvcc path is set correctly, and I have also set `CUDA_HOME=/urs/local/cuda`. There are plenty of similar problems out there, and all of these were suggested as solutions, but haven’t actually fixed my problem. Any guidance is much appreciated. ---
**Author:** ![ptrblck](https://discuss.pytorch.org/user_avatar/discuss.pytorch.org/ptrblck/32/1823_2.png) [@ptrblck](https://discuss.pytorch.org/u/ptrblck)\ **Post date:** [March 17, 2023, 6:51am UTC](https://discuss.pytorch.org/t/fattal-error-torch-extension-h-no-such-file-or-directory/175109/2 "2023-03-17T06:51:37Z")
I don’t know why your environment isn’t able to detect the needed `torch/extension.h` file as it’s located in `.../site-packages/torch/include/torch/extension.h` in the current `2.0.0` release. I also don’t know what exactly you are running to reproduce the issue, but executing `python fused_act.py` in the linked repository seems to build something without a failure in my env. With that being said, it seems the repository depends on `torch==1.8.0` as seen [here](https://github.com/NVlabs/denoising-diffusion-gan/blob/6818ded6443e10ab69c7864745457ce391d4d883/requirements.txt#L1), so I’m unsure if my build really succeeded as I don’t know how to reproduce your error.