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

[Johannes Doerfert via Openmp-dev]

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
> 
> 

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-- 

Johannes Doerfert
Researcher

Argonne National Laboratory
Lemont, IL 60439, USA

jdoerfert at anl.gov
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