Good news! -- ///\\\///\\\///\\\///\\\///\\\///\\\///\\\///\\\ Jose Claudio Faria Estatistica - Prof. Pleno UESC/DCET/Brasil joseclaudio.faria at gmail.com ///\\\///\\\///\\\///\\\///\\\///\\\///\\\///\\\
Em 2 de agosto de 2011 15:18, Paulo Justiniano <[email protected]> escreveu: > A noticia abaixo é relevante > para novas versões e ver tendencias no projeto > P.J. > > ------------------------------------------------------------------------ > With byte compiler, R 2.14 will be even faster > August 2, 2011 > By David Smith > > This article was first published on Revolutions, and kindly contributed to > R-bloggers > > In a presentation at the JSM 2011 conference in Miami yesterday, R core > member Luke Tierney revealed that the next major update to R, R 2.14, will > feature improved speed when processing interpreted R code, thanks to > standard use of the new byte compiler feature. > > The byte compiler was introduced with R 2.13, but while R developers could > use it for their own functions, the standard base and recommended packages > were unaffected by the byte compiler. Starting with R 2.14, all of the > standard functions and packages in R will be pre-compiled into byte-code, > which in some cases can speed up performance by a factor of 5x or more. (In > an experimental version of the compiler, which may make it into 2.14, even > greater speedups are possible.) The benefits accrue mainly to pure R > functions which deal with scalars and very short vectors -- R functions > which call out to C code and operations on large vectors won't be affected > much. With the new compiler, Tierney says there should be fewer occasions > where R programmers need to turn to C or other external languages to speed > up R code. > > In other news for R 2.14, Tierney says that the new version may also make > transparent use of parallel processing for some operations on multi-core > machines. The colSums and dist functions already include hidden features for > parallel processing, and if tests go well features like this may become the > default in future versions of R. Features from Tierney's experimental pnmath > package, which parallelizes some basic math routines in R, may also make it > into the next release. > > R 2.14 is expected to be released later this year. > > _______________________________________________ > R-br mailing list > [email protected] > https://listas.inf.ufpr.br/cgi-bin/mailman/listinfo/r-br > Leia o guia de postagem (http://www.leg.ufpr.br/r-br-guia) e forneça código > mínimo reproduzível. _______________________________________________ R-br mailing list [email protected] https://listas.inf.ufpr.br/cgi-bin/mailman/listinfo/r-br Leia o guia de postagem (http://www.leg.ufpr.br/r-br-guia) e forneça código mínimo reproduzível.
