[R] memory allocation problem

[David Winsemius]

Restart your computer. (Yeah, I know that what the help-desk always  
says.)
Start R before doing anything else.

Then run your code in a clean session. Check ls() oafter starte up to  
make sure you don't have a bunch f useless stuff in your .Rdata  
file.   Don't load anything that is not germane to this problem.  Use  
this function to see what sort of space issues you might have after  
loading objects:

  getsizes <- function() {z <- sapply(ls(envir=globalenv()),
                                 function(x) object.size(get(x)))
                (tmp <- as.matrix(rev(sort(z))[1:10]))}

Then run your code.

-- 
David.

On Nov 2, 2010, at 10:13 PM, Lorenzo Cattarino wrote:

> I would also like to include details on my R version
>
>
>
>> version              _
>
> platform       x86_64-pc-mingw32
> arch           x86_64
>
> os             mingw32
> system         x86_64, mingw32
> status
> major          2
> minor          11.1
> year           2010
> month          05
> day            31
> svn rev        52157
> language       R
> version.string R version 2.11.1 (2010-05-31)
>
> from FAQ 2.9
> (http://cran.r-project.org/bin/windows/base/rw-FAQ.html#There-seems-to-b
> e-a-limit-on-the-memory-it-uses_0021
> <http://cran.r-project.org/bin/windows/base/rw-FAQ.html#There-seems-to-b
> e-a-limit-on-the-memory-it-uses_0021> ) it says that:
> "For a 64-bit build, the default is the amount of RAM"
>
> So in my case the amount of RAM would be 4 GB. R should be able to
> allocate a vector of size 5 Mb without me typing any command (either  
> as
> memory.limit() or appended string in the target path), is that right?
>
>
>
> From: Lorenzo Cattarino
> Sent: Wednesday, 3 November 2010 10:55 AM
> To: 'r-help at r-project.org'
> Subject: memory allocation problem
>
>
>
> I forgot to mention that I am using windows 7 (64-bit) and the R  
> version
> 2.11.1 (64-bit)
>
>
>
> From: Lorenzo Cattarino
>
> I am trying to run a non linear parameter optimization using the
> function optim() and I have problems regarding memory allocation.
>
> My data are in a dataframe with 9 columns. There are 656100 rows.
>
>> head(org_results)
>
> comb.id   p H1 H2 Range Rep no.steps      dist         aver.hab.amount
>
> 1       1       0.1  0  0     1            100        0
> 0.2528321              0.1393901
>
> 2       1       0.1  0  0     1            100        0
> 0.4605934              0.1011841
>
> 3       1       0.1  0  0     1            100        4
> 3.4273670              0.1052789
>
> 4       1       0.1  0  0     1            100        4
> 2.8766364              0.1022138
>
> 5       1       0.1  0  0     1            100        0
> 0.3496872              0.1041056
>
> 6       1       0.1  0  0     1            100        0
> 0.1050840              0.3572036
>
>> est_coeff <- optim(coeff,SS, steps=org_results$no.steps,
> Range=org_results$Range, H1=org_results$H1, H2=org_results$H2,
> p=org_results$p)
>
> Error: cannot allocate vector of size 5.0 Mb
>
> In addition: Warning messages:
>
> 1: In optim(coeff, SS, steps = org_results$no.steps, Range =
> org_results$Range,  : Reached total allocation of 10000Mb: see
> help(memory.size)
>
> 2: In optim(coeff, SS, steps = org_results$no.steps, Range =
> org_results$Range,  : Reached total allocation of 10000Mb: see
> help(memory.size)
>
> 3: In optim(coeff, SS, steps = org_results$no.steps, Range =
> org_results$Range,  : Reached total allocation of 10000Mb: see
> help(memory.size)
>
> 4: In optim(coeff, SS, steps = org_results$no.steps, Range =
> org_results$Range,  : Reached total allocation of 10000Mb: see
> help(memory.size)
>
>> memory.size()
>
> [1] 9978.19
>
>> memory.limit()
>
> [1] 10000
>
>>
>
> I know that I am not sending reproducible codes but I was hoping that
> you could help me understand what is going on. I set a maximum limit  
> of
> 10000 mega byte (by writing this string --max-mem-size=10000M after  
> the
> target path, right click on R icon, shortcut tab). And R is telling me
> that it cannot allocate a vector of size 5 Mb???
>
>

David Winsemius, MD
West Hartford, CT