title: R: writing to disk using parallel
body: <p>It is possible to use the package <code>R.cache</code> with the package <code>parallel</code>.
  I'm doing some computation that are very time comsuming and I would like to use a cache along with going parallel.</p>
  
  <p>The the parrallel jobs are independent for each other. Yet I cannot load the R.cache package on the clusters.</p>
  
  <pre><code>library(parallel)
  library(R.cache)
  
  cl &lt;- makeCluster(getOption("cl.cores", 2))
  clusterExport(cl,varlist = ls())
  clusterEvalQ(cl, library(R.cache))
  
  ## Error in checkForRemoteErrors(lapply(cl, recvResult)) : 
  ##   2 nodes produced errors; first error: there is no package called ‘R.cache’
  </code></pre>