Hi, @smth,  I also got a error report like Audrius-St ,
>>> import torch
python: symbol lookup error: /datah/gyhu/soft/Anaconda3/envs/env3/lib/python3.6/site-packages/torch/_C.cpython-36m-x86_64-linux-gnu.so: undefined symbol: THInferNumThreads

and when I run ldd /datah/gyhu/soft/Anaconda3/envs/env3/lib/python3.6/site-packages/torch/_C.cpython-36m-x86_64-linux-gnu.so. I got output in the following:

        linux-vdso.so.1 =>  (0x00007ffffb3e8000)
        libshm.so => /datah/gyhu/soft/Anaconda3/envs/env3/lib/libshm.so (0x00007f88e2c5c000)
        libcudart.so.8.0 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/libcudart.so.8.0 (0x00007f88e29f3000)
        libnvToolsExt.so.1 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/libnvToolsExt.so.1 (0x00007f88e27e9000)
        libcudnn-a2b758a6.so.7.0.3 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/python3.6/site-packages/torch/lib/libcudnn-a2b758a6.so.7.0.3 (0x00007f88d567d000)
        libTH.so.1 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/libTH.so.1 (0x00007f88d50c9000)
        libTHS.so.1 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/libTHS.so.1 (0x00007f88d4e95000)
        libTHNN.so.1 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/libTHNN.so.1 (0x00007f88d4b8b000)
        libATen.so.1 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/python3.6/site-packages/torch/lib/libATen.so.1 (0x00007f88d437c000)
        libTHC.so.1 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/python3.6/site-packages/torch/lib/libTHC.so.1 (0x00007f88c2e60000)
        libTHCS.so.1 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/python3.6/site-packages/torch/lib/libTHCS.so.1 (0x00007f88c2a71000)
        libTHCUNN.so.1 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/python3.6/site-packages/torch/lib/libTHCUNN.so.1 (0x00007f88bdd7d000)
        libnccl.so.1 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/libnccl.so.1 (0x00007f88bb721000)
        libgcc_s.so.1 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/libgcc_s.so.1 (0x00007f88bb50b000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f88bb2cb000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f88baf01000)
        /lib64/ld-linux-x86-64.so.2 (0x0000558f58421000)
        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f88bacf9000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f88ba9ef000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f88ba7eb000)
        libstdc++.so.6 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/./libstdc++.so.6 (0x00007f88ba4d5000)
        libopenblas.so.0 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/./libopenblas.so.0 (0x00007f88b9491000)
        libgomp.so.1 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/./libgomp.so.1 (0x00007f88b9282000)
        libcublas.so.8.0 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/libcublas.so.8.0 (0x00007f88b6239000)
        libcurand.so.8.0 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/libcurand.so.8.0 (0x00007f88b22c2000)
        libcusparse.so.8.0 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/libcusparse.so.8.0 (0x00007f88af7a2000)
        libmkl_gf_lp64.so => /datah/gyhu/soft/Anaconda3/envs/env3/lib/libmkl_gf_lp64.so (0x00007f88aecbb000)
        libmkl_gnu_thread.so => /datah/gyhu/soft/Anaconda3/envs/env3/lib/libmkl_gnu_thread.so (0x00007f88ad5fd000)
        libmkl_core.so => /datah/gyhu/soft/Anaconda3/envs/env3/lib/libmkl_core.so (0x00007f88ab46a000)
        libgfortran.so.3 => /datah/gyhu/soft/Anaconda3/envs/env3/lib/././libgfortran.so.3 (0x00007f88ab160000)


It seems that I did not mix up python3.5 & 3.6 , so what the problem in me? Thank you in advance!