Look at the nws package, it has tools for passing data among multiple instances of R (and waiting for data to be ready).
There are other packages that provide some of the same, but from what I remember, nws was fairly simple to set up on a single computer. Hope this helps, -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of Feng Li > Sent: Wednesday, February 04, 2009 7:08 AM > To: r-help@r-project.org > Subject: [R] Passing data among multiple instances > > Dear R, > > I have two R instances running at the same time, say instance A and > instance > B. Is there a simpler way to pass the data in A to B? > > More precise, I have a stupid example: > > In instance A, I am running a function "test1" > > test1 <- function (x1) > { > x2 <- sin(x1) > return(x2) > } > > In instance B, another function "test2" > > test2 <- function (x2) > { > x3 <- cos(x2) > return(x3) > } > > where " test2" receives the input from "test1"'s rueslt. "test1" and > "test2" could be much more complex. They may take one minute each. > > Now the whole procedure is instance A is running, while instance B is > waiting for the result of instance A. Once instance A is done (instance > A > goes to run with new data), instance B should detect A is done, and > instance > B receives the parameter from instance A. B begins to work. While B is > done, > waiting for A's new results. > > I want to repeat the loop many times and get x3 in the end. > > > Is it possible to do this job? Thanks ! > > > Feng > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. ______________________________________________ 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.