if (FALSE) {
### Save code in a file "demo.r" and run with 2 processors by
### SHELL> mpiexec -np 2 Rscript demo.r
spmd.code <- "
### Initialize
suppressMessages(library(pbdMPI, quietly = TRUE))
if(comm.size() != 2){
comm.cat(\"2 processors are requried.\n\", quiet = TRUE)
finalize()
}
### Examples.
comm.warning(\"test warning.\n\")
comm.warnings()
comm.stop(\"test stop.\n\")
comm.stopifnot(1 == 2)
### Finish.
finalize()
"
# execmpi(spmd.code, nranks = 2L)
}
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