[Openmp-dev] ptxas fatal : Cannot take address of function '__pthread_key_create'

[Itaru Kitayama via Openmp-dev]

Jonas,
No problem. It is at:

https://github.com/ikitayama/nest-simulator

... and especially this file

https://github.com/ikitayama/nest-simulator/blob/master/sli/arraydatum.cc

is the first one on which llvm/clang-8.0.0 stops in a build process.

On Wed, Sep 5, 2018 at 3:56 PM Jonas Hahnfeld <hahnjo at hahnjo.de> wrote:

> Mabye you are using some thread-local storage? Can you share the code,
> everything else will be guesses at best...
>
> Jonas
>
> On 2018-09-05 06:15, Itaru Kitayama via Openmp-dev wrote:
> > Hi Alexey,
> > If the function is not explicitly used in the code-base in question,
> > how do I
> > find which function/module requires it?
> >
> > On Tue, Sep 4, 2018 at 11:15 PM Alexey Bataev <a.bataev at outlook.com>
> > wrote:
> >
> >> It means that this function is used somewhere in the code that is
> >> offloaded to the GPU. I don't think this is correct, this function
> >> is pthreads-specific and I don't think that NVidia GPUs support
> >> pthreads.
> >>
> >> -------------
> >> Best regards,
> >> Alexey Bataev
> >>
> >> 02.09.2018 3:51, Itaru Kitayama via Openmp-dev пишет:
> >>
> >>>
> >>
> >>> Hi,
> >>> I am trying to build an application that can do OpenMP offloading
> >>> on a POWER8 + P100 system using the latest LLVM/Clang toolchain
> >>> (openmp
> >>> is too the latest).
> >>>
> >>> The build error is:
> >>>
> >>> [  3%] Building CXX object
> >>> sli/CMakeFiles/sli_lib.dir/arraydatum.cc.o
> >>> cd /gpfs/work/pcp0/pcp0151/build/nest-clang-upstream/sli &&
> >>> /gpfs/work/pcp0/pcp0151/opt/llvm+clang-upstream/bin/clang++
> >>> -Dsli_lib_EXPORTS -I/bgsys/drivers/ppcfloor/comm/gcc/include
> >>> -I/gpfs/software/opt/gsl/2.4/include
> >>> -I/gpfs/homeb/pcp0/pcp0151/projects/nest-simulator/libnestutil
> >>> -I/gpfs/work/pcp0/pcp0151/build/nest-clang-upstream/libnestutil
> >>> -std=c++11 -O2 -Wall -fopenmp -fopenmp-targets=nvptx64-nvidia-cuda
> >>> --cuda-path=/gpfs/software/opt/cuda/9.2.88  -fPIC   -o
> >>> CMakeFiles/sli_lib.dir/arraydatum.cc.o -c
> >>> /gpfs/homeb/pcp0/pcp0151/projects/nest-simulator/sli/arraydatum.cc
> >>>
> >>> ptxas fatal   : Cannot take address of function
> >>> '__pthread_key_create'
> >>> clang-8: error: ptxas command failed with exit code 255 (use -v to
> >>> see invocation)
> >>> make[2]: *** [sli/CMakeFiles/sli_lib.dir/arraydatum.cc.o] Error
> >>> 255
> >>> make[2]: Leaving directory
> >>> `/gpfs/work/pcp0/pcp0151/build/nest-clang-upstream'
> >>> make[1]: *** [sli/CMakeFiles/sli_lib.dir/all] Error 2
> >>> make[1]: Leaving directory
> >>> `/gpfs/work/pcp0/pcp0151/build/nest-clang-upstream'
> >>> make: *** [all] Error 2
> >>>
> >>> The CUDA toolkit is 9.2.88, is it possible the error is fixed in
> >>> the
> >>> latest toolkit?
> >>>
> >>> Thanks,
> >>> Itaru.
> >>
> >>> _______________________________________________
> >>> Openmp-dev mailing list
> >>> Openmp-dev at lists.llvm.org
> >>> http://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev
> > _______________________________________________
> > Openmp-dev mailing list
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>
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