32 vs 64 bit
When we first moved to 64 bit I found that certain things were slower. I believe it is because of the increased overhead for memory management. -roger
Paul Gilbert wrote:
I ran R on an AMD Athlon 64 with a 32 bit Linux (by accident, I moved the hard disk from another machine). Now, after install 64 bit Linux and 64 bit R, I am finding some of my R tests are quite a bit slower, I think because memory demands cause a lot of swap. Does anyone know if extra memory usage would be mainly because of R itself, or is there a lot of extra memory demand because of the OS, windowing system, and other apps? Paul Gilbert
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