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cuDNN not correctly linked in master.5795b17 #3251

@PiotrSokol

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@PiotrSokol

Compilation goes without a problem but importing torch gives
ImportError: /lib/python3.6/site-packages/torch/_C.cpython-36m-x86_64-linux-gnu.so: undefined symbol: cudnnSetConvolutionGroupCount
Compiling from source v0.2.0 works fine.

Set up is

Python 3.6.2 :: Anaconda custom (64-bit)
Cuda compilation tools, release 8.0, V8.0.61
#define CUDNN_MAJOR 7
gcc (GCC) 4.8.5
centos-release-scl-rh-2-2.el7.centos.noarch

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    module: buildBuild system issuesmodule: cudnnRelated to torch.backends.cudnn, and CuDNN support

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