memory over load?
On Thu, 2 Aug 2007, FZ wrote:
Hi Thomas, My experience in memory management in R is very limited so I am sure you are right, but how do you then explain the following behavior starting with a fresh session? memory.size()# 12,000Kb x=integer(100000000) memory.size() #approx 412,000kb rm(x) memory.size()#still approx 412,000kb gc() memory.size()#down to approx 20,000Kb
Yes, running gc() does affect the results of memory.size(), and running it more than once may have an effect, because there are three levels of garbage collection.
However, a highest-level garbage collection is always done before R gives up on allocating memory. If you run out of memory in R, adding gc() calls to your code will not help. The original question was about running out of memory.
-thomas
Thomas Lumley Assoc. Professor, Biostatistics
tlumley at u.washington.edu University of Washington, Seattle