Dimitri Liakhovitski
2010-Oct-29 20:45 UTC
[R] R version 2-12.0 - running as 32 or as 64 bit?
Question: I installed R verison 2-12.0 on my Windows 7 (64 bit) PC. When I was installing it, it did not ask me anything about 32 vs. 64 bit. So, if I run R now - is it running as a 32-bit or a 64-bit? thank you! -- Dimitri Liakhovitski Ninah Consulting www.ninah.com
G'day Dimitri, On Fri, 29 Oct 2010 16:45:00 -0400 Dimitri Liakhovitski <dimitri.liakhovitski at gmail.com> wrote:> Question: I installed R verison 2-12.0 on my Windows 7 (64 bit) PC. > When I was installing it, it did not ask me anything about 32 vs. 64 > bit. So, if I run R now - is it running as a 32-bit or a 64-bit?Well, when I did the same, I got two shortcuts installed on my desktop, one named R 2.12.0 and the other named R x64 2.12.0. If I had any doubts which version of R these shortcuts would start, then the fourth line of the start-up message would put them to rest. Missing that message, you can always issue the command> .Machine$sizeof.pointerif the answer is 4, you are running 32bit, if the answer is 8, then you are running 64 bit. HTH. Cheers, Berwin ========================== Full address ===========================Berwin A Turlach Tel.: +61 (8) 6488 3338 (secr) School of Maths and Stats (M019) +61 (8) 6488 3383 (self) The University of Western Australia FAX : +61 (8) 6488 1028 35 Stirling Highway Crawley WA 6009 e-mail: berwin at maths.uwa.edu.au Australia http://www.maths.uwa.edu.au/~berwin
On 29/10/2010 4:45 PM, Dimitri Liakhovitski wrote:> Question: I installed R verison 2-12.0 on my Windows 7 (64 bit) PC. > When I was installing it, it did not ask me anything about 32 vs. 64 bit. > So, if I run R now - is it running as a 32-bit or a 64-bit?If it didn't ask you about it, then it probably thinks your machine can't run 64 bits. Any ideas why it might think that? Can you give details about what Windows says about itself in Help | About Windows (accessible from Explorer)? Duncan Murdoch