[R-sig-hpc] Difference between PSOCK and MPI?

Marius Hofert marius.hofert at math.ethz.ch
Tue Apr 9 23:24:18 CEST 2013

Dear expeRts,

What are the main differences (advantages/drawbacks) between parallel's makeCluster(,
type="PSOCK") and makeCluster(, type="MPI")? According to
http://cran.r-project.org/web/views/HighPerformanceComputing.html, MPI has
become the 'standard', although the default type of makeCluster() is "PSOCK". Is
"PSOCK" more compatible in that it does not need an installation such as (open)MPI? slower/faster/no difference? 



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