[Openmp-dev] How to change/add target device architecture for OpenMP GPU Offload

[Guray Ozen via Openmp-dev]

Thanks Jonas! It works great! I couldn't figure it out by myself.
If you define multiple target triple, can you target multiple device architectures? 

-----Original Message-----
From: Jonas Hahnfeld <hahnjo at hahnjo.de> 
Sent: Tuesday, August 7, 2018 3:23 PM
To: Guray Ozen <gozen at nvidia.com>
Cc: openmp-dev at lists.llvm.org
Subject: Re: [Openmp-dev] How to change/add target device architecture for OpenMP GPU Offload

Hi,

you can pass -Xopenmp-target -march=sm_60 to target Pascal GPUs, for example.
Another option would be to build Clang with
-DCLANG_OPENMP_NVPTX_DEFAULT_ARCH=sm_60 which changes the default architecture.

At the moment OpenMP offloading isn't able to target more than one architecture.

Cheers,
Jonas

On 2018-08-07 14:10, Guray Ozen via Openmp-dev wrote:
> Hello Everyone,
> 
> I have quick questions. Firstly, how can I change target device 
> architecture? I have quick questions. Firstly, how can I change target 
> device architecture? As far as I understood, clang uses sm_35 as 
> default, if I don't change anything. Another question is that, can I 
> produce an executable using multiple device architectures?
> 
> Thanks in advance
> 
> Best
> 
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