[R] R --nsize 2M runs havoc (under linux)

Joerg Kindermann Joerg.Kindermann at gmd.de
Wed Oct 6 14:29:46 CEST 1999


Dear All,

I am running R version 0.65.0 under

a) Suse-Linux 6.1, and Suse-Linux 6.2, compiler gcc-2.95, CPUs pentium pro
200, 128MB, and pentium II 450, 128MB
b) Solaris 5.7, compiler gcc-2.95, cpu SUN sparc, 4000MB

When I set --nsize to more than 1M, R's internal storage management runs
havoc. gc() indicates the requested sizes, but the overall process size is
much too big: Running R with --vsize 10M --nsize 3M will for example result
in a process size of 63.276 MB! Using such an R process will lead to a
segmentation fault sooner or later, usually inside the storage allocation
routine of R. I cannot reproduce the strange behavior under Solaris,
however.

I would be glad to hear from anyone who has encountered and fixed(!) this
problem.

--  Dr. Joerg Kindermann             GMD - AiS
            German National Research Center for Information Technology
                Schloss Birlinghoven, D-53754 St. Augustin, Germany
                   phone: +49 02241 142437 fax: +49 02241 142342
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