error while installing matmul_cuda

[RachelHui12]

my system is windows.
C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\BIN\x86_amd64\link.exe /nologo /INCREMENTAL:NO /LTCG /DLL /MANIFEST:EMBED,ID=2 /MANIFESTUAC:NO /LIBPATH:C:\Users\Aimee\Anaconda3\envs\ignn2\lib\site-packages\torch\lib /LIBPATH:E:\CUDA\DEVELOPMENTS\lib/x64 /LIBPATH:C:\Users\Aimee\Anaconda3\envs\ignn2\libs /LIBPATH:C:\Users\Aimee\Anaconda3\envs\ignn2\PCbuild\amd64 "/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\LIB\amd64" "/LIBPATH:E:\Windows Kits\10\lib\10.0.10240.0\ucrt\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\8.1\lib\winv6.3\um\x64" cudart.lib c10.lib c10_cuda.lib caffe2.lib torch.lib torch_python.lib caffe2_gpu.lib _C.lib /EXPORT:PyInit_matmul_cuda build\temp.win-amd64-3.7\Release\matmul.obj build\temp.win-amd64-3.7\Release\matmul1_kernel.obj build\temp.win-amd64-3.7\Release\matmul1_bwd_kernel.obj /OUT:build\lib.win-amd64-3.7\matmul_cuda.cp37-win_amd64.pyd /IMPLIB:build\temp.win-amd64-3.7\Release\matmul_cuda.cp37-win_amd64.lib
matmul.obj : warning LNK4197: export 'PyInit_matmul_cuda' specified multiple times; using first specification
Creating library build\temp.win-amd64-3.7\Release\matmul_cuda.cp37-win_amd64.lib and object build\temp.win-amd64-3.7\Release\matmul_cuda.cp37-win_amd64.exp
matmul1_kernel.obj : error LNK2001: unresolved external symbol "public: long * __cdecl at::Tensor::data(void)const " (??$data@J@Tensor@at@@QEBAPEAJXZ)
matmul1_bwd_kernel.obj : error LNK2001: unresolved external symbol "public: long * __cdecl at::Tensor::data(void)const " (??$data@J@Tensor@at@@QEBAPEAJXZ)
build\lib.win-amd64-3.7\matmul_cuda.cp37-win_amd64.pyd : fatal error LNK1120: 1 unresolved externals
error: command 'C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\BIN\x86_amd64\link.exe' failed with exit status 1120

[sczhou]

Hi,
Sorry, we didn't test our code on the Windows system.
Please try to change your compiler from Visual Studio to MinGW GCC. And check out your PyTorch version should be 1.1.0.

[RachelHui12]

Hi,
Sorry, we didn't test our code on the Windows system.
Please try to change your compiler from Visual Studio to MinGW GCC. And check out your PyTorch version should be 1.1.0.

I've changed my compiler to MinGW GCC, and my pytorch version is also the same as yours, but it still doesn't work.