How to increase the memory allocation after R version 4.2

[Takamasa]

Hi Rstudio Community,

I am asking a question regarding the removal of a function "memory.limit()" in base-r.

After R version 4.2.0, this function is no longer supported.
(See this link for more info:[Rd] R 4.2.0 is released (ethz.ch))

Does this mean we cannot increase the memory allocation anymore? Or does this mean after this version, R can increase the memory allocation automatically so that we need not worry about this? Since this version is relatively new, I could not find the solution for this issue.
Also, I would like to know if there is a package that does the same job as memory.limit().

I am looking forward to your reponse.

[nirgrahamuk]

@Takamasa

R can increase the memory allocation automatically so that we need not worry about this?

You don't need to worry, R will access all available memory and not limit itself.

[Takamasa]

Thank you for your response. Does the same thing apply to Version 4.1.1? Or is this totally new that before 4.2.0 we have to allocate memory manually before 4.2.0?

[nirgrahamuk]

as of R version 3:

It is now possible for 64-bit builds to allocate amounts of
memory limited only by the OS. It may be wise to use OS
facilities (e.g., ulimit in a bash shell, limit in csh), to set
limits on overall memory consumption of an R process,
particularly in a multi-user environment. A number of packages
need a limit of at least 4GB of virtual memory to load.
64-bit Windows builds of R are by default limited in memory usage
to the amount of RAM installed: this limit can be changed by
command-line option --max-mem-size or setting environment
variable R_MAX_MEM_SIZE.

[Takamasa]

Thank you for your response.

By your response, it seems as that R_MAX_MEM_SIZE will solve this problem. Daily News: R-devel says R_MAX_MEM_SIZE is defunct in r-devel for Version 4.1.1.. I assume that we should use R_MAX_MEM_SIZE for R Version 4.1.1. I think this problem is solved. Thanks!