On 1 March 2008 at 09:19, Guy Perry wrote: | Sorry: resending this; didn't have a title on it. | | Trying to set up multiple spawns of R | ------------------------------------------- | | Hi. I'm new to the list but I have a small problem with R. I'm trying to | set up multiple spawns of R active at the same time on an AMD with a dual | core in Vista so that I can cut down my permutation processing time. | | I've installed R in multiple places, which I thought was the correct way to | do it but whether I use installs at "C:\Program Files\R1" and "C\...\R2", or | even separately on the C: and D: drive, whenever I try to load my package | (qtl), it gives me the error message: | | Error in library(qtl) : there is no package called 'qtl' | | The thing is, I've installed the packagen in both places (C\...\R1 and | C\...\R2, or both the C: and D: drives) and it still gives me the message. | Does anyone know how to set up a simultaneous R spawn? Clearly I'm wrong | about how to get it started.
Afraid so. What made you think you needed to _install R multiple times_ in order to _run R multiple times_ ? In short, you don't. R's core engine is single-threaded, so there is no obvious shortcut. That said, yopu can of course use parallel coding toolkits like Rmpi to spawn multiple R session -- which may be beneficial even if you don't have multiple cores. These things have been discussed a few times, so some focused Google queries (or RSiteSearch() queries) may help. Hth, Dirk -- Three out of two people have difficulties with fractions. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
