[Rcpp-devel] OpenACC, Rcpp and RStudio on Windows (Emmanuel Hamel)

[Dmitriy Selivanov]

Hi Emmanuel. Probably you take a look to the approach taken by Microsoft
in LightGBM R package. I do not know details (so approach could be
irrelevant to what you've asked), but on windows they build package (even
with gpu support) using Visual Studio toolchain. You can check here -
https://github.com/Microsoft/LightGBM/tree/master/R-package.

If you will find it useful please report back to this mailing list, so we
will be aware of it. Thanks.

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1. Re: OpenACC, Rcpp and RStudio on Windows (Emmanuel Hamel)
----------------------------------------------------------------------
Message: 1
Date: Mon, 22 Jan 2018 23:24:34 -0500
Subject: Re: [Rcpp-devel] OpenACC, Rcpp and RStudio on Windows
gmail.com>
Content-Type: text/plain; charset="utf-8"
Hi,
For the moment, I compile the GPU code with Visual studio 2015 to make ?
DLL, and then I call it from R. It is the only solution I found for the
moment.
Best regards,
Emmanuel

| First, I would like to say thank you because you spend time answering

my

| questions and you are not paid. I appreciate a lot. I will take a look
more
| seriously at OpenCL. I am mainly interested in "non-implemented
| operations". I also think that the problem is related to the fact that

it

| is "difficult" to make a link between Rtools and nvcc compiler. I have
| looked at many R packages for GPU and a lot of them do not seem

available

| on windows. Finally, If you find the solution of how to integrate

easily

The Windows toolchain issue is a problem. We are fixed at g++-4.9.3 for
some
time.
| OpenACC and Rtools in the future, let me know. I think it would be

great

to
| have a "RcppOpenACC" package. This would enable developers to create
| flexible code in C++ (CPU and GPU at the same time!).
I looked a little at OpenACC after you first asked as the topic seems
interesting. From my casual browsing it seems my machine (where g++ is
g++-7.2 here on Ubuntu 7.10) already has it -- newer g++ included it.
On Windows you will be constrained. Maybe at some point with a newer
Windows
10 you can cheat and use the Windows Subsystem for Linux (or whatever it

is

called). In the meantime, just use AWS, a cheap laptop, or some other
means.
It is good technology -- use it, make a business case and use that to get
your corporate windows-only constraint relaxed. At least one can hope...
Dirk
--

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