Alan, The multicore package is easy to use and, if you problem is indeed embarrassingly parallel (there's no communication between different models? how about between chains?) should be straightforward to add. Note that you'll need to run any multicore-using script from the Terminal command line, and not from the Mac GUI, though. Ben
On Tue, Mar 8, 2011 at 3:14 AM, Alan Kelly <ake...@tcd.ie> wrote: > Dear all, I'm running a number of Bayesian binomial regression models using > jags (interfacing with R via R2jags) on a Mac server with quad core processor > running at 2.66 Ghz with 6 GB memory under Snow Leopard (session info below). > As the models contain around 30 predictors and between 5 to 15 thousand > observations, the time required to run a single model with 3 chains with an > adequate number of iterations to ensure convergence is around 2 hours. While > I can live with this for the occasional run, it will be a problem when I need > to run several dozen different models. > Perhaps some of you have relevant experience and can advise if this run time > could be significantly reduced using, for example, one of the parallel > computing packages? And if so, which one? I should add that I'm not clear > if jags can directly avail of multicore processing even if available - it > might be necessary to program a Gibbs or Metropolis sampler directly in R..... > Any thoughts/suggestions? > Best wishes, > Alan Kelly > > sessionInfo() > R version 2.12.1 (2010-12-16) > Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit) > > locale: > [1] en_IE.UTF-8/en_IE.UTF-8/C/C/en_IE.UTF-8/en_IE.UTF-8 > > attached base packages: > [1] splines stats graphics grDevices utils datasets methods base > > other attached packages: > [1] car_2.0-9 survival_2.36-2 nnet_7.3-1 MASS_7.3-9 > foreign_0.8-41 > > loaded via a namespace (and not attached): > [1] tools_2.12.1 > > > _______________________________________________ > R-SIG-Mac mailing list > R-SIG-Mac@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-mac > _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac
