mpi_print: MPI Printer

In RBigData/cop: Custom OPs

Description

Orderly printing of data across MPI ranks. Similar to pbdMPI::comm.print().

Usage

mpi_cat(x, quiet = FALSE, all.rank = FALSE, comm = 0L)

mpi_print(x, quiet = FALSE, all.rank = FALSE, comm = 0L)

Arguments

x	The input to be printed.
quiet	Should ranks print their rank number before printing the input?
all.rank	Should all ranks print or only rank 0?
comm	MPI communicator number.

Details

All printing is done on rank 0 to ensure printing occurs in rank order. This requires communication if all.rank=TRUE.

Value

Invisibly returns NULL.

Examples

## Not run: 
suppressMessages(library(cop))

x = matrix(1:4, 2) + 10*comm.rank()
mpi_print(x)

finalize()

## End(Not run)

RBigData/cop documentation built on March 10, 2021, 8:21 p.m.