R and multicore architectures?
N?zhet Dalfes wrote:
Hi, We are gradually moving most of climate data and model output analyses to R. We have a 2 x Core 2 Duo Mac with 9GB memory and 3TB disk space, i.e. ideal for such work... Question: Does the standard (binary distribution) of R use all of the cores and access all of the available memory? Or does one have to recompile R to take advantages of more powerful hardware available around?
R will use the available memory, but keep in mind that MacOS is still a 32-bit operating system, so 9 Gb of RAM won't be used, I don't think. R will use only one processor unless you write code specifically using mechanisms like Rmpi OR if you simply run multiple R processes simultaneously. Recompiling will not change that. Sean