[cfe-dev] clang 11 + CUDA + OpenMP broken?

Geoff Levner via cfe-dev cfe-dev at lists.llvm.org
Thu Nov 19 09:43:03 PST 2020


I just tested the master branch, and it works. So apparently the problem is
with the 11.x branch.

On Thu, Nov 19, 2020 at 5:45 PM Geoff Levner <glevner at gmail.com> wrote:

> This is with the release branch (11.0.1, updated Tuesday 17 november). I
> haven't tried with the trunk... I will try to test the trunk tomorrow.
>
> Thanks,
> Geoff
>
> On Thu, Nov 19, 2020 at 5:41 PM Johannes Doerfert <
> johannesdoerfert at gmail.com> wrote:
>
>> Which version of clang is this exactly?
>> Can you reproduce the error with trunk?
>> There was a problem that should have been fixed and back ported to the
>> release branch.
>>
>> ~ Johannes
>>
>> On 11/19/20 7:08 AM, Geoff Levner via cfe-dev wrote:
>> > If I have a source file including a CUDA kernel and OpenMP directives, I
>> > can compile it like so on my Linux machine:
>> >
>> > /usr/local/cuda/bin/nvcc -arch=sm_30 cutest.cu
>> --compiler-options=-fopenmp
>> >
>> > I would expect to be able to compile it with clang 11 like so:
>> >
>> > clang -fopenmp --cuda-gpu-arch=sm_30 cutest.cu \
>> >      -L/usr/local/cuda/lib64 -lcudart -ldl -lrt -pthread
>> >
>> > But when I try, I get a number of undefined function symbols:
>> __nv_isnand,
>> > __nv_isinfd, __nv_copysign, etc.
>> >
>> > Am I doing something wrong?
>> >
>> > Geoff
>> >
>> >
>> > _______________________________________________
>> > cfe-dev mailing list
>> > cfe-dev at lists.llvm.org
>> > https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev
>>
>
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