Nothing
### SHELL> mpiexec -np 4 Rscript --vanilla [...].r
suppressMessages(library(pbdMPI, quietly = TRUE))
.comm.size <- comm.size()
.comm.rank <- comm.rank()
N <- 5
x <- (1:N) + N * .comm.rank
if(.comm.rank == 0){
send(list(x))
} else if(.comm.rank == 1){
y <- recv()
}
comm.print(y, rank.print = 1)
if(.comm.rank == 0){
send(as.integer(x), rank.dest = 2)
} else if(.comm.rank == 2){
y <- recv()
}
comm.print(y, rank.print = 2)
if(.comm.rank == 0){
send(as.double(x), rank.dest = 3)
} else if(.comm.rank == 3){
y <- recv()
}
comm.print(y, rank.print = 3)
xx <- as.raw(x)
comm.print(xx, rank.print = 0)
if(.comm.rank == 0){
send(xx, rank.dest = 2)
} else if(.comm.rank == 2){
y <- recv()
}
comm.print(y, rank.print = 2)
if(.comm.rank == 0){
send(xx, rank.dest = 3)
} else if(.comm.rank == 3){
y <- recv(xx)
}
comm.print(y, rank.print = 3)
xx <- serialize(list(x), NULL)
comm.print(xx, rank.print = 0)
if(.comm.rank == 0){
send(xx, rank.dest = 1)
} else if(.comm.rank == 1){
y <- recv()
}
comm.print(unserialize(y), rank.print = 1)
finalize()
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