R rasterEngine Parallel Processing, serialized and unserialized memory errors

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I am trying to perform some raster math and wanted to try parallel processing in R using rasterEngine.

I am able to run the script for a few minutes and watch my CPU usage increase substantially, but soon an error occurs and processing stops.

Here is my code

library(raster)library(spatial.tools)library(doParallel)cpus = 24 # The number of nodes/cores to use in the clustercl
 
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