[Openmp-dev] instruction 'vote' without '.sync' is not supported on .target sm_70 and higher from PTX ISA version 6.4

[Ye Luo via Openmp-dev]

It seems similar to https://bugs.llvm.org/show_bug.cgi?id=44587
My code also has reduction within each team. The reproducer here is much
smaller and easier to work with.
Ye
===================
Ye Luo, Ph.D.
Computational Science Division & Leadership Computing Facility
Argonne National Laboratory


On Mon, Feb 10, 2020 at 2:34 PM Johannes Doerfert via Openmp-dev <
openmp-dev at lists.llvm.org> wrote:

> I haven't seen that.
>
> If no one knows a bug ID for this, please open up one.
>
>
> On 02/09, Kelvin Li via Openmp-dev wrote:
> > Is it a known problem?
> >
> > int main()
> > {
> >   int t=-1;
> >
> > #pragma omp target teams map(t)
> > {
> >   #pragma omp parallel reduction(+: t)
> >   {
> >     #pragma omp parallel reduction(+: t)
> >     {
> >       t = 1;
> >     }
> >   }
> > }
> > }
> >
> > $ clang -fopenmp -fopenmp-targets=nvptx64-nvidia-cuda tmp.c
> > ptxas /tmp/thread_limit-984c26.s, line 1792; error   : Instruction
> 'vote'
> > without '.sync' is not supported on .target sm_70 and higher from PTX
> ISA
> > version 6.4
> > ptxas fatal   : Ptx assembly aborted due to errors
> > clang-11: error: ptxas command failed with exit code 255 (use -v to see
> > invocation)
> >
> > $ bin/clang -fopenmp -fopenmp-targets=nvptx64-nvidia-cuda tmp.c
> > -Xopenmp-target -march=sm_60
> > ptxas /tmp/thread_limit-5cc9b6.s, line 1792; warning : Instruction
> 'vote'
> > without '.sync' is deprecated since PTX ISA version 6.0 and will be
> > discontinued in a future PTX ISA version
> >
> > Kelvin
> >
> >
>
> > _______________________________________________
> > Openmp-dev mailing list
> > Openmp-dev at lists.llvm.org
> > https://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev
>
>
> --
>
> Johannes Doerfert
> Researcher
>
> Argonne National Laboratory
> Lemont, IL 60439, USA
>
> jdoerfert at anl.gov
> _______________________________________________
> Openmp-dev mailing list
> Openmp-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev
>
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