[R] receiving "Error: cannot allocate vector of size 1.5 Gb"

[Rory.WINSTON at rbs.com]

See

http://cran.r-project.org/bin/windows/base/rw-FAQ.html#There-seems-to-be-a-limit-on-the-memory-it-uses_0021


Rory Winston
RBS Global Banking & Markets
Office: +44 20 7085 4476

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Hayes, Daniel
Sent: 02 September 2008 14:48
To: r-help at r-project.org
Subject: [R] receiving "Error: cannot allocate vector of size 1.5 Gb"

Dear all,



In my attempt to run the below modelling command in R 2.7.0 under windows XP (4GB RAM with /3GB switch set) I receive the following error:

Error: cannot allocate vector of size 1.5 Gb



I have searched a bit and have tried adding: --max-mem-size=3071M  to the command line (when set to 3G I get the error that 3072M is too much)

I also run:

> memory.size()

[1] 11.26125

> memory.size(max=T)

[1] 13.4375



Modelling script:

model.females <- quote(gamlss(WAZ11~cs(sqrtage,df=12)+country, sigma.formula=~cs(sqrtage,df=3)+country,

              nu.formula=~cs(sqrtage,df=1), tau.formula=~cs(sqrtage,df=1),

            data=females, family=BCPE, control=con))

fit.females <- eval(model.females)



the females  (1,654KB) that is being modelled by the GAMLSS package contains 158,533 observations

I have further installed various memory optimization programs under XP but to no avail.

I believe that I perhaps need to set the Vcells and Ncells but am not sure which nor to what limits.

Any other help in maximizing my RAM usage in R would be great



I am quite a novice so please excuse any obvious mistakes or omissions.

Thank you in advance for your help



Dr. Daniel Hayes


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