Increasing (or decreasing) the memory available to R processes

Question

I would like to increase (or decrease) the amount of memory available to R. What are the methods for achieving this?

Answer 1

In a 32-bit Windows R, you can only use up to 3Gb of available RAM.

In the 64-bit version, you can use to the maximum size of your RAM.

To check the current size of memory available to R, run the following:

memory.limit()

#OR

round(memory.limit(),2)

To increase the memory in a 64-bit Windows R version, run the following:

memory.limit(size=25000)

You can use any size greater than the current size, if there is more RAM available otherwise, you can always buy more RAM.