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
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: r-help-request at
stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Joerg Kindermann <Joerg.Kindermann at gmd.de> writes:> 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.Er, I get 63 thousand and something too, but that is in *Kilo*bytes... Are you sure you didn't misread the output of 'top'?? -- O__ ---- Peter Dalgaard Blegdamsvej 3 c/ /'_ --- Dept. of Biostatistics 2200 Cph. N (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Each cons cell is 16 bytes, so asking for a 10MB vector heap and 3 million cons cells will give you close to 60MB of memory. Add a little extra for the R program itself and your figure looks reasonable (in kB not MB, as Peter pointed out). This is a lot of memory on a machine with 128MB RAM. Even if R doesn't crash it will be very slow due to the use of the swap partition (you do have one and it is enabled I hope). I suspect the reason you can't reproduce the bug on Solaris is that your Sun has 4GB of memory, so probably won't be swapping at all. Do you really need that many cons cells? The default is 250,000. Martyn On 06-Oct-99 Joerg Kindermann wrote:> 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.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._