[R] seg fault: some more comments

Prof Brian D Ripley ripley at stats.ox.ac.uk
Sun Mar 7 15:18:31 CET 1999

On Sun, 7 Mar 1999, Lorenz Gygax wrote:

> Thanks for the recent comments on my segmentation fault problem when using
> loess.
> I realized that I should have mentioned two things. Firstly, I am already
> working with R --vsize 100 and still get a crash at n= 4000. Secondly I am
> using R 0.63.1 with a SuSE Linux 5.2

Ah, I think that is the point: you were using 0.63.1 and we were using
0.63.2 or 0.63.3.  You may find that loess uses less memory in 0.63.3
as I have fixed a bug that unnecessarily allocated quite a large array.
(But this is additional memory, not R-managed memory.)

> Obviously one thing to do is to upgrade (neither in Martin Maechlers nor
> in Brian Ripleys attempts there is an actual seg fault but only an error).

Try it again with 0.63.3 (and with something as recent as loess in R, you
do want to keep up to date).

Brian D. Ripley,                  ripley at stats.ox.ac.uk
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 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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