[Rd] Hard memory limit of 16GB under Windows?

[Marc Schwartz]

Hi Samuel,

You may already be aware, but if not, RStudio has their own support mechanisms here:

  https://support.rstudio.com/hc/en-us

If this does turn out to be RStudio specific, you may wish to check there for additional insights.

Regards,

Marc Schwartz


> On Apr 7, 2020, at 10:24 AM, Tomas Kalibera <tomas.kalibera using gmail.com> wrote:
> 
> Hi Samuel,
> 
> please also have a look at ?memory.limit. You can set this limit at R startup. It is in megabytes. Maybe R Studio sets it at runtime.
> 
> Best
> Tomas
> 
> On 4/7/20 3:57 PM, Samuel Granjeaud IR/Inserm wrote:
>> Hi Tomas,
>> 
>> Many thanks for your answer.
>> 
>> Here is a copy of a fresh session under RStudio, and after a copy under Rgui.
>> Strangely enough the result of memory.limit() is not the same. Without your question I would not have looked to RGui, being used to work with RStudio.
>> 
>> The value under RGui sounds to correspond to the total RAM of the computer. It makes me noticing that the value is in MB.
>> 
>> The value under Rstudio was so huge (1.759219e+13) that I just interpreted it as GB. But I was totally wrong. So in fact I don't know what it refers to. The documentation says "For a 64-bit versions of R under 64-bit Windows the limit is currently 8Tb.", but it looks like being 16TB, which my computer don't have of course.
>> 
>> I still have to understand why my colleague has a problem of memory allocation (cannot allocate vector of size 12.6 Gb).
>> 
>> Sorry for the wrong interpretation, but thanks for the help,
>> Samuel
>> 
>> --- RStudio
>> 
>> R version 3.6.3 (2020-02-29) -- "Holding the Windsock"
>> Copyright (C) 2020 The R Foundation for Statistical Computing
>> Platform: x86_64-w64-mingw32/x64 (64-bit)
>> 
>> R is free software and comes with ABSOLUTELY NO WARRANTY.
>> You are welcome to redistribute it under certain conditions.
>> Type 'license()' or 'licence()' for distribution details.
>> 
>> R is a collaborative project with many contributors.
>> Type 'contributors()' for more information and
>> 'citation()' on how to cite R or R packages in publications.
>> 
>> Type 'demo()' for some demos, 'help()' for on-line help, or
>> 'help.start()' for an HTML browser interface to help.
>> Type 'q()' to quit R.
>> 
>> > memory.limit()
>> [1] 1.759219e+13
>> > sessionInfo()
>> R version 3.6.3 (2020-02-29)
>> Platform: x86_64-w64-mingw32/x64 (64-bit)
>> Running under: Windows 10 x64 (build 18363)
>> 
>> Matrix products: default
>> 
>> locale:
>> [1] LC_COLLATE=French_France.1252  LC_CTYPE=French_France.1252 LC_MONETARY=French_France.1252 LC_NUMERIC=C
>> [5] LC_TIME=French_France.1252
>> 
>> attached base packages:
>> [1] stats     graphics  grDevices utils     datasets  methods base
>> 
>> loaded via a namespace (and not attached):
>> [1] compiler_3.6.3 tools_3.6.3
>> >
>> 
>> --- RGui
>> 
>> R version 3.6.3 (2020-02-29) -- "Holding the Windsock"
>> Copyright (C) 2020 The R Foundation for Statistical Computing
>> Platform: x86_64-w64-mingw32/x64 (64-bit)
>> 
>> R is free software and comes with ABSOLUTELY NO WARRANTY.
>> You are welcome to redistribute it under certain conditions.
>> Type 'license()' or 'licence()' for distribution details.
>> 
>> R is a collaborative project with many contributors.
>> Type 'contributors()' for more information and
>> 'citation()' on how to cite R or R packages in publications.
>> 
>> Type 'demo()' for some demos, 'help()' for on-line help, or
>> 'help.start()' for an HTML browser interface to help.
>> Type 'q()' to quit R.
>> 
>> > ls()
>> character(0)
>> > memory.limit()
>> [1] 32627
>> > sessionInfo()
>> R version 3.6.3 (2020-02-29)
>> Platform: x86_64-w64-mingw32/x64 (64-bit)
>> Running under: Windows 10 x64 (build 18363)
>> 
>> Matrix products: default
>> 
>> locale:
>> [1] LC_COLLATE=French_France.1252  LC_CTYPE=French_France.1252 LC_MONETARY=French_France.1252
>> [4] LC_NUMERIC=C                   LC_TIME=French_France.1252
>> 
>> attached base packages:
>> [1] stats     graphics  grDevices utils     datasets  methods base
>> 
>> loaded via a namespace (and not attached):
>> [1] compiler_3.6.3
>> >
>> 
> 
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