trick. The vignettes and tests were not as bad.
We'll try a resubmission and see how we fare.
Thanks again,
Rodrigo
Von: Dirk Eddelbuettel
Gesendet: Dienstag, 4. April 2023 22:00
An: Rodrigo Tobar Carrizo
Cc: r-package-devel@r-project.org
Betreff: R
Hi Rodrigo,
This came up recently again on social media where I illustrated how the
tiledb package deals with it. So a quick recap:
First off, let's make the goals clear.
We want to _simultaneously_
- abide by CRAN Policy rules and cap ourselves to two cores there
- do not impose any limits
Ensure you surround all your omp pragmas like so:
#ifdef _OPENMP
#pragma omp parallel ...
#endif
Essentially, detecting the operating system is not enough -- you need
to condition your use of OpenMP if and only if _OPENMP is available.
You should also do the same for
#if _OPENMP
#include
#endi
See
https://cran.r-project.org/doc/manuals/r-release/R-exts.html#OpenMP-support
for a way to enable OpenMP when it's available. If you need more detailed
checks for the OpenMP support in the toolchain, you would need to use a
configure script. For example, I'm using an autoconf configure script for
On Mon, 23 Mar 2020 15:29:20 +0100
Emil Sjørup wrote:
> const int iMaxLag = 20;
> error: ‘iMaxLag’ not specified in enclosing ‘parallel’
> error: ‘iMaxLag’ is predetermined ‘shared’ for ‘shared’
This looks like a compiler bug to me. g++ seems to forget the rule that
"const" variables are suppo
Hi Mark,
if you consider backward compatibility (and potential compatibility with
other compilers) a worthy goal, you can easily reduce manually in a
'#pragma omp critical' block. An example here (around the middle of the
page):
http://www.parallelr.com/r-and-openmp-boosting-compiled-code-on-mult
I am using #pragma omp statements all over the place and this is the only
type causing crashes. I'm guessing it has something to do with travis
building on a 12.04 ubuntu VM with a rather old gcc (4.6.3).
2. Is there a workaround, or should I just go for another build service
(which one)?
Yo
Thanks Dirk! that did it. I wasn't aware of the trusty 14.04 option.
Just adding
sudo: required
dist: trusty
at the top of my .travis.yaml solved it
https://docs.travis-ci.com/user/trusty-ci-environment/,
Cheers,
Mark
Op wo 3 aug. 2016 om 14:38 schreef Dirk Eddelbuettel :
>
> On 3 August
On 3 August 2016 at 08:13, Mark van der Loo wrote:
| Dear pkg developers,
|
|
| I'm working on a package using C code and openMP. The package builds and
| tests fine on my own machine[1] and also on r-hub[2]. However on travis-ci
| the build crashes[3] with the following message (plus a few simi
On 24 August 2015 at 09:14, Joshua N Pritikin wrote:
| On Sun, Aug 23, 2015 at 08:01:08AM +0200, Mark van der Loo wrote:
| >Afaik, openmp is available on windows. According to writing R
| >extensions:
| >
| >There is nothing to say what version of OpenMP is supported: version
| >3
On Sun, Aug 23, 2015 at 08:01:08AM +0200, Mark van der Loo wrote:
>Afaik, openmp is available on windows. According to writing R
>extensions:
>
>There is nothing to say what version of OpenMP is supported: version
>3.0 (May 2008) is supported by recent versions of the Linux, _Windo
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