pbdMPI (version 0.3-0)

bcast-method: A Rank Broadcast an Object to Every Rank

Description

This method lets a rank broadcast an object to every rank in the same communicator. The default return is the object.

Usage

bcast(x, rank.source = .pbd_env$SPMD.CT$rank.source,
      comm = .pbd_env$SPMD.CT$comm)

Arguments

x

an object to be broadcast from all ranks.

rank.source

a rank of source where x broadcast from.

comm

a communicator number.

Value

• Every rank has x returned.

Details

The same copy of x is sent to all ranks.

References

Programming with Big Data in R Website: http://r-pbd.org/

See Also

scatter().

Examples

### Save code in a file "demo.r" and run with 2 processors by
### SHELL> mpiexec -np 2 Rscript demo.r

### Initial.
suppressMessages(library(pbdMPI, quietly = TRUE))
init()

### Examples.
x <- matrix(1:5, nrow = 1)
y <- bcast(x)
comm.print(y)

### Finish.
finalize()