On Jan 3, 2006, at 9:36 AM, Brian D Ripley wrote: > I use save.image() or save(), which seem exactly what you are > asking for.
I have the (perhaps unsupported) impression that Ross wanted to save the progress during the optim run. Since it spends most of its time in the .Internal(optim(***)) call, save/save.image would not work. /Kasper > On Mon, 2 Jan 2006, Ross Boylan wrote: > >> I would like to checkpoint some of my calculations in R, specifically >> those using optim. As far as I can tell, R doesn't have this >> facility, >> and there seems to have been little discussion of it. >> >> checkpointing is saving enough of the current state so that work can >> resume where things were left off if, to take my own example, the >> system >> crashes after 8 days of calculation. >> >> My thought is that this could be added as an option to optim as >> one of >> the control parameters. >> >> I thought I'd check here to see if anyone is aware of any work in >> this >> area or has any thoughts about how to proceed. In particular, is >> save a >> reasonable way to save a few variables to disk? I could also make >> the >> code available when/if I get it working. > > -- > 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-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
