On Thu, 18 Aug 2005, Alastair Cooper wrote: > I am looking at getting a PC preinstalled with Windows XP x64. What I > want to know is, has anyone successfully compiled a version of R for > 64-bit Windows (Amd64 - not Itanium), and if so did they find any > performance boost?
Hmm, where do you get a reliable C99-compatible compiler for 64-bit Windows? We don't know of one, and the R sources are written assuming long is 64-bit on a 64-bit platform (and that is not the Win64 convention) so there would still be a lot of 32-bit restrictions until we change that (which is on my TODO list). (We don't support building R with VC++, and although there have been a number of attempts none has produced a version that passes make check: I recall finding VC++ thought -Inf > 3, for example.) Based on extensive experience on other platforms, I would expect a noticeable performance hit for a 64-bit build, but the ability to run bigger tasks: this is discussed with data and reasoning in the latest R-admin manual (in the R-devel version of R). -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
