[Openmp-dev] Working cuda / libstdc++ pairs

[Ye Luo via Openmp-dev]

Hi Jon,
gcc 6 toolchain used to work for me and I never got gcc >=7 working due the
massive mess in math header.
I configured clang with -DGCC_INSTALL_PREFIX=/opt/gcc/6.5 to force clang
always picking up my own build of gcc 6.5.
My fresh build of clang today can compile my programs although I did
workaround std::fpclassify in the application source code.

gcc 6.5 works + CUDA 10.1 build clang openmp offload properly.
The OS is ubuntu 18.04 and I used CUDA 10.1.
The machine has Ryzen 1700x and GTX1050Ti (pascal sm_61).

Best,
Ye
===================
Ye Luo, Ph.D.
Computational Science Division & Leadership Computing Facility
Argonne National Laboratory


Jon Chesterfield via Openmp-dev <openmp-dev at lists.llvm.org> 于2019年11月5日周二
上午8:02写道：

> There's a conflict between the clang math forwards for cuda and libstdc++.
> At least, cuda 10.0 plus libstdc++ 7.2 or 7.4 error on duplicate,
> incompatible versions.
>
> For those that have the proprietary nvcc toolchain working with clang
> openmp, please share your gnu toolchain + cuda version, along with any
> unexpected config tricks you needed to use to get it it work. Plus what the
> host arch / GPU are please.
>
> My config doesn't really work so I can't start us off.
>
> Thank you
>
> Jon
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> Openmp-dev at lists.llvm.org
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