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R package Rmpi is a layer between OpenMPI and R. Rmpi can spawn a cluster of worker nodes, send work to them, collect it up

There are several other parallel packages sit on top of Rmpi, such as

  • SNOW (Ex60-HelloWorldSnow), SNOWFT (Ex61-HelloWorldSnowFT)
  • doMPI, foreach, (and many other packages)
  • R’s own “parallel” sits “on top” of SNOW and other cluster-level packages.

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