James,
My attempt at marginal usefulness (compared to DE and JJE's comments) would
be to offer some code examples that I've got using OpenMP--based
parallelism. There are examples in the gallery, of course. But I've got a
number of others for euclidean distance and one for an EM algorithm. If you
Hi KK,
Thanks for your advice! I actually managed to get it work, by creating an
embeeded R instance before calling the Rcpp function. I didn't post the
solution yet because it is still not clear to me why that fixes the problem.
1) I compiled the code with an IDE, so I didn't post the command. I
On 11 July 2014 at 21:19, JJ Allaire wrote:
| (2) The premise of RcppParallel is that you are reading and writing directly
| into C arrays in background threads (it's not safe to call into R and
therefore
| not really safe to call into Rcpp). So to interact with a Matrix/Vector you
| need to calc
Two things to consider:
(1) The parallelFor and parallelReduce functions don't require iterators --
they just take indexes which you can use for iterating over any range. In
the gallery examples they are used to offset NumericVector.begin() to get
the address of the slide of the vector or matrix t
Sorry, this is a continuation of my previous email, I've just learned a new
gmail keybinding for accidentally sending ...
My questions are:
- is it right to parallelize the outer loop versus doing a parallelReduce
on the kl_divergence function?
- is there a row iterator which returns NumericVector
Hi All,
I'm attempting to paralellize some Rcpp code I have now, but I'm having a
hard time understanding the best route for this. I'm looking for some
guidance about how things need to be restructured to take advantage of the
parallelFor (if that would be the speediest option).
I have the follow
Hi,
I don't have a Windows developing environment just now, so I can not figure
out what is wrong. I can try in the weekends.
Just little personal advice.
(1) Maybe you should also put the compiling commands here, not only the
output. It may be easier to see your configuration and the problem.
hi,
you should change the line
matched[j+1] = tmp;
to
matched[j-1] = tmp;
to get rid of your error.
require(Rcpp)
require(inline)
sourceCpp(code='
#include
using namespace Rcpp;
// [[Rcpp::export]]
List createVectorList_Numeric_cpp(NumericMatrix df) {
CharacterVector rownames = VECTOR
On Fri, Jul 11, 2014 at 3:19 AM, Mario Deng
wrote:
>
But when I do "matched[j+1] = matched[j]+1;" everything crashes, I don't
> get any error informations etc. Also, is there a way to avoid that the R
> instance/RStudio crashes?
>
I was able to compile and run part of your code on linux outside
Hello everyone,
I still struggle with Rcpp, I hope you guys are patient.
The problem occurs here:
IntegerVector matched = match(sorted_vec, one_col);
for(int j = 0; j < (matched.size() - 1); j++){
if( matched[j] >= matched[j+1] ){
matched[j+1] = matched[j]+1;
}
}
I can access
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