Dear HPC people,

I'm trying to leasrn how to run multiple independent models in parrallel. I have succesfully run parallel computations on different sets of data (using 12 of my 24 cores). But there's something (probably trivial) about the nature of formulae that is escaping me. Here is what I tried.

I store my formulae:

formulaList <- vector('list', length = 4)
formulaList[[1]] <- 'resp ~ BAratio +dispDiff + (BAratio + dispDiff | subject)'
formulaList[[2]] <- 'resp ~ BAratio * dispDiff + (BAratio * dispDiff | subject)'
formulaList[[3]] <- 'resp ~ BA3Dratio + dispDiff + (BA3Dratio + dispDiff | subject)'
formulaList[[4]] <- 'resp ~ BA3Dratio * dispDiff + (BA3Dratio * dispDiff | subject)'

I get workers:

require(foreach)
require(doMC)
registerDoMC()
getDoParWorkers()

I try to run:

outputList <- foreach(i = 1:4) %dopar% glmer(formulaList, family = binomial, data = selected)

I get: Error: task 1 failed - "invalid formula"

FYI

> sessionInfo()
R version 3.0.1 Patched (2013-09-02 r63805)
Platform: x86_64-apple-darwin10.8.0 (64-bit)

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] splines   datasets  utils     stats     graphics  grDevices methods   base     

other attached packages:
 [1] lme4_0.999999-2   Matrix_1.0-12     lattice_0.20-23   xtable_1.7-1      gamlss_4.2-6      nlme_3.1-111     
 [7] gamlss.data_4.2-6 gamlss.dist_4.2-0 plyr_1.8          foreach_1.4.1     sos_1.3-7         brew_1.0-6       
[13] ggplot2_0.9.3.1   car_2.0-18        nnet_7.3-7        MASS_7.3-29      

loaded via a namespace (and not attached):
 [1] codetools_0.2-8    colorspace_1.2-2   compiler_3.0.1     dichromat_2.0-0    digest_0.6.3       grid_3.0.1        
 [7] gtable_0.1.2       iterators_1.0.6    labeling_0.2       munsell_0.4.2      proto_0.3-10       RColorBrewer_1.0-5
[13] reshape2_1.2.2     scales_0.2.3       stats4_3.0.1       stringr_0.6.2      survival_2.37-4    tools_3.0.1       

______________________________________________
Professor Michael Kubovy
University of Virginia
Department of Psychology
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Office:    B011	+1-434-982-4729
Lab:        B019	+1-434-982-4751
WWW:    http://www.people.virginia.edu/~mk9y/


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