Lawrence, My understanding is that only a minor change is needed in ff's C++ layer in order to remove the 64bit compiler warnings/errors. The C++ layer is maintained by Daniel Adler, who can give you an outlook if/when he plans to attack this.
Until a 64bit version of ff is available, you might consider using the 32bit win version of R and ff on a 64bit win machine: while 32bit R itself has limited memory access, ff can handle larger objects faster because it benefits from *all* RAM via filesystem-caching. Jens --------------------- Von: "Hunsicker, Lawrence" <lawrence-hunsic...@uiowa.edu> Gesendet: May 13, 2010 3:32:25 PM An: jens.oehlschlae...@truecluster.com Betreff: ff for 64-bit windows and 64-bit R <!-- Converted from text/rtf format --> Jens: I am running R on a 64 bit PC, 64 bit Windows 7, and 64 bit R. I have to handle rather large data sets, and I need the 64 bit environment to run some of my analyses. Use of ff has been recommended to me to help with some of the memory problems, but I am told that ff has not yet been ported to a 64-bit Windows environment. I have access, of course, to the native code, but I am not the world’s best compiler operator. Do you have any plans to port ff to a 64-bit Windows and R environment? Is there anything that I can do to encourage this? I would be happy to make a contribution to the “ff project” if such a thing exists. Let me know your plans. [L. G. Hunsicker, M.D.] Professor, Internal Medicine U. Iowa College of Medicine Phone: (319) 356-4763 Fax: (319) 356-7488 lawrence-hunsic...@uiowa.edu ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
