Hey! Since it seems to be the case that we don't know much about what happens, I'm making an experiment which consists on an R package to stress RcppArmadillo here: https://github.com/gvegayon/arma64bit. Following Dirk's advice, I've included the #define ARMA_64BIT_WORD before #include <RcppArmadillo.h> (as seen here https://github.com/gvegayon/arma64bit/blob/c10b5d4a80b93088da730e45ee8c583feeff2ab6/src/misc.cpp#L2-L3) and included CXX_STD = CXX11 in Makevars. After compiling the package and asking for a matrix of size 1e5 x 1e5 I get an error, here (so it doesn't seem to be working):
> x <- sp_runif(1e5,1e5,.01) error: SpMat::init(): requested size is too large Error: SpMat::init(): requested size is too large My guess is that #define ARMA_32BIT_WORD is overriding #define ARMA_64BIT_WORD. I'm an R user that jumped to Rcpp a while ago so I still don't fully understand how things work under the hood with R + Rcpp. Any clues? Best, sessionInfo() R version 3.2.5 (2016-04-14) Platform: x86_64-pc-linux-gnu (64-bit) Running under: Ubuntu 14.04.4 LTS locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=en_US.UTF-8 [4] LC_COLLATE=en_US.UTF-8 LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 [7] LC_PAPER=en_US.UTF-8 LC_NAME=C LC_ADDRESS=C [10] LC_TELEPHONE=C LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] arma64bit_0.1.0.9000 Matrix_1.2-5 loaded via a namespace (and not attached): [1] Rcpp_0.12.4 lattice_0.20-33 digest_0.6.9 withr_1.0.1 grid_3.2.5 [6] covr_2.0.1 git2r_0.14.0 magrittr_1.5 lazyeval_0.1.10 rstudioapi_0.5 [11] whisker_0.3-2 rex_1.1.1 rmarkdown_0.9.5 devtools_1.11.1 tools_3.2.5 [16] yaml_2.1.13 htmltools_0.3.5 memoise_1.0.0 George G. Vega Yon +1 (626) 381 8171 http://www.its.caltech.edu/~gvegayon/ On Thu, Mar 31, 2016 at 12:37 PM, Dirk Eddelbuettel <e...@debian.org> wrote: > > On 29 March 2016 at 15:55, George Vega Yon wrote: > | Hi there, > | > | A couple of days ago I included this comment on a Stackoverflow question > about > | "too large" matrices in RcppArmadillo > | I wonder if we can use this in a package. After trying to compile the > package > | with and without PKG_CXXFLAGS=-DARMA_64BIT_WORD I'm still not able to > create > | sparse matrices bigger than 65,535 x 65,535. I've realized that the > | RcppArmadilloConfig.h (version 0.6.600.4.0) file has ARMA_32BIT_WORD 1 > so it > | actually prevents using ARMA_64BIT_WORD (I think?). Any way I can solve > this, > | or I just have to deal with R (3.2.4 Revised (2016-03-16 r70336)) not > been able > | to handle 64INT? > | > | http://stackoverflow.com/questions/16159174/ > | large-spmat-object-with-rcpparmadillo > | > | For which Dirk answered: > | > | Try locally setting ARMA_64BIT_WORD (check how) -- I can't at the > package level > | as it breaks existing code. It will likely help you. If you set it > before the # > | include <RcppArmadillo.h> things may just work. That at least is the > pln. (And > | you should have asked on rcpp-devel to get more than two eyeballs on > this...) > | And yes the other answer basically says the same thing. – Dirk > Eddelbuettel 2 > | days ago > | > | Now I'm asking again but on rcpp-devel =). The issue is that I'm > concerned on > | the part that Dirk says that "things may just work". I was reading about > R not > | been able to handle int64 and its implications for big matrices, and so > I'm a > | little concerned that if passing ARMA_64BIT_WORD works I may loose some > | information on the way. For example, if I allow a users creating and > | manipulating 1e6 x 1e6 sparse matrices, is there any chance for them to > loose > | information? > > It is entirely possibly that nobody stresses RcppArmadillo this way and > that > setting ARMA_64BIT_WORD gets unset. I only know that I cannot set it > globally now as some packages (still) depend on ARMA_32BIT_WORD. > > So I encourage you to experiment and to try locally. Maybe something can > (and even should) be improved. > > Dirk > > > | > | Thanks, > | > | George G. Vega Yon > | +1 (626) 381 8171 > | http://www.its.caltech.edu/~gvegayon/ > | _______________________________________________ > | Rcpp-devel mailing list > | Rcpp-devel@lists.r-forge.r-project.org > | https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel > > -- > http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org >
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