Thanks for the prompt reply. Yes, I understand that I have just one package and that I can start in in two modes. If I launch R.app, R runs in 32-bit mode; if R64.app, in 64-bit mode.
In 64-bit mode, it can happen that a package that I have installed while running in 32-bit mode needs a 64-bit version. Such a package is openNLP. Since posing the question I have in fact installed the 64-bit version. In that situation I encountered a Java heap space exception, which I have reported elsewhere. So I exited 64-bit R, and ran R.app (32-bit R). The same operation that encountered the heap space problem in 64-bit R ran without a problem in 32-bit R, I am assuming with the 64-bit version of openNLP. So I guess I must repose my question: Will this always be the case? That is, will a 64-bit version of a package always run OK in 32-bit R? Thanks, Richard On Mon, 26 Oct 2009 08:45:15 -0400, Simon Urbanek wrote > On Oct 26, 2009, at 2:42 AM, Richard R. Liu wrote: > > > I'm running R 2.9.2 build 5464 on OS X 10.5.8. Having encountered > > memory allocation problems, I ran the problematic code in R64, the > > 64-bit version of the same build. When I attempt to load openNLP I > > receive the error message that the 32-bit version that I had been > > using does not run in R64. > > > > I understand that there is a 64-bit version of openNLP, and that it > > installs in R64 without problems. I am assuming, however, that > > packages installed by 32-bit R and those installed by 64-bit R land > > in the same place, because I can see the 32-bit packages in the > > package list of 64-bit R. So my question is, when I subsequently > > switch to R (32-bit), will 64-bit versions of packages run there? > > I'm trying to avoid constantly having to manually switch between 32- > > and 64-bit versions of packages. > > > > I'm assuming you're talking about the Leopard build -- in that case > both 32-bit and 64-bit are part parts of the same R and package -- > they are not a 'different package'. Please read about sub- > architectures in R documentation to understand the details if you > desire, but you are not supposed to "switch" anything. The only > problems you can cause is to forget to upgrade your packages when > you installed the Leopard build. > > Cheers, > Simon -- Richard R. Liu Dittingerstr. 33 CH-4053 Basel Switzerland Tel.: +41 61 331 10 47 Email: richard....@pueo-owl.ch _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-mac