[llvm-dev] Automatic GPU Code Generation

[Philip Pfaffe via llvm-dev]

Polly supports experimental PTX code generation using PPCG's mapping
algorithm.

Cheers,
Philip

On Tue, Dec 11, 2018 at 8:44 AM Madhur Amilkanthwar via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hmm.. AFAIK, state-of-the-art tools use source-to-source approach. You may
> want to look at current PPCG if they have an option to bypass CUDA (I
> suspect not).
> Is there any reason why you want to avoid that?
>
> On Tue, Dec 11, 2018 at 1:05 PM hameeza ahmed <hahmed2305 at gmail.com>
> wrote:
>
>> Thank You..
>> I am asking to generate directly PTX code automatically or by directives
>> without involvement of CUDA. This way, I am talking about avoiding source
>> to source compiler approach where c code is converted automatically into
>> CUDA, instead I am saying directly to convert C code to PTX assembly.
>>
>> On Tue, Dec 11, 2018 at 12:19 PM Madhur Amilkanthwar <
>> madhur13490 at gmail.com> wrote:
>>
>>> You can skip CUDA code generation and target PTX assembly. PTX is a
>>> common assembly language for NVIDIA's GPU. You may want to look at PPCG,
>>> Pluto projects to get a hint of how automatic CUDA code can be generated by
>>> compilers. They are based on polyhedral model so come with some inherent
>>> limitations.
>>>
>>> On Tue, Dec 11, 2018, 12:07 PM hameeza ahmed via llvm-dev <
>>> llvm-dev at lists.llvm.org wrote:
>>>
>>>> Hello,
>>>> I need to ask, like automatic compiler vectorization, can GPU ISA be
>>>> generated automatically, by skipping the CUDA programming?
>>>> For instance if i just write C code there can be 2 possibilities, semi
>>>> and full automatic.
>>>> In case of semi, we can write #pragma directives to say this should be
>>>> run on gpu. hence can the compiler generates directly gpu ISA, skipping
>>>> CUDA code?
>>>> In case of fully automatic, can we just write simple C code and
>>>> compiler is intelligent enough to determine which portion is suitable for
>>>> GPU and generates GPU ISA accordingly?
>>>>
>>>> I need to know the progress made so far in both the above mentioned
>>>> directions.
>>>>
>>>> Thank You
>>>> Regards
>>>> _______________________________________________
>>>> LLVM Developers mailing list
>>>> llvm-dev at lists.llvm.org
>>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>>
>>>
>
> --
> *Disclaimer: Views, concerns, thoughts, questions, ideas expressed in this
> mail are of my own and my employer has no take in it. *
> Thank You.
> Madhur D. Amilkanthwar
>
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