[Rcpp-devel] OpenACC, Rcpp and RStudio on Windows

[Emmanuel Hamel]

Hi,

Thank you for your answer! I am already able to use the OpenMP-style
without RcppParallel, thanks to some examples given in the Rcpp community.
I will have a look at the RViennaCL.

For my problem, the compiler is not important. I just mentioned the one I
use as an example. However, I really have to use Windows.

Best regards,

Emmanuel


2018-01-21 10:26 GMT-05:00 Dirk Eddelbuettel <edd at debian.org>:

>
> On 21 January 2018 at 09:55, Emmanuel Hamel wrote:
> | Hope you are all feeling good. I have a question. First, I use windows
> and
>
> Never the easiest platform (in my very personal view).
>
> | I want to use OpenACC. For the moment, I am able to compile GPU Cuda C
> code
> | with Microsoft visual studio and call it from a DLL in Windows. Also, I
> am
> | able to use OpenMP with the Rcpp package. Nevertheless, I want to extend
> | these possibilities for a project regarding dynamic hedging program for
> | segregated funds. Hence, I would like to know if you have any tips
> | regarding the use of OpenACC in Rcpp. In particular, what are the files
>
> I am not aware of anyone using it now.  That said, it would be nice to
> have.
>
> | that I need to modify in a RStudio project in order to be able to compile
> | pragma commands with the OpenACC compiler? For the moment, I use the PGI
> | compiler.
>
> That puts a third constraint up.  Which, in aggregate, makes it even less
> likely that someone is doing this already.
>
> A few people use Rcpp together with CUDA code.  Charles has been working on
> RViennaCL which is another "portable" approach for multiple backends:
>
>   https://cran.r-project.org/package=RViennaCL
>
> He may be following up here too in a day or two.
>
> Other than that, RcppParallel exists, is fairly widely used, and gives you
> higher-level abstractions for OpenMP-style parallelism.  No GPU though.
>
> So in short if you need
>   - OpenACC
>   - on Windows
>   - with PGI
> you may have to roll up your sleeves and build it.  We will help as we can.
>
> If it were me, I'd relax as many constraints here as possible.  So how
> about
> figuring out how to interface OpenACC on any suitable platform and compiler
> pair?
>
> Dirk
>
> --
> http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org
>
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