Nothing
### SHELL> mpiexec -np 4 Rscript --vanilla [...].r
### Setup environment.
suppressPackageStartupMessages(library(pbdDEMO, quietly = TRUE))
if(comm.size() != 4){
comm.stop("This example requries 4 processors.")
}
rank <- comm.rank()
# demo
comm.cat("\ntest value:\n", quiet=T)
test <- (rank > 0)
comm.print(test, all.rank=T, quiet=T)
comm.cat("\ncomm.all:\n", quiet=T)
test.all <- comm.all(test)
comm.print(test.all, all.rank=T, quiet=T)
comm.cat("\ncomm.any:\n", quiet=T)
test.any <- comm.any(test)
comm.print(test.any, all.rank=T, quiet=T)
comm.cat("\n\n\n", quiet=T)
### This is handy for managing, for example, whether all MPI processes
# should halt based on the prejudices of just 1 process.
need2stop <- FALSE
if (rank==0){
need2stop <- TRUE
}
need2stop <- comm.any(need2stop)
if (need2stop)
comm.stop("NOT AN ERROR, stopping here is the correct behavior of this demo. See source for details.")
finalize()
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.