pbdMPI (version 0.5-2)

info: Info Functions

Description

The functions call MPI info functions.

Usage

info.create(info = .pbd_env$SPMD.CT$info)
info.set(info = .pbd_env$SPMD.CT$info, key, value)
info.free(info = .pbd_env$SPMD.CT$info)
info.c2f(info = .pbd_env$SPMD.CT$info)

Value

An invisible state of MPI call is returned.

Arguments

info

a info number.

key

a character string to be set.

value

a character string to be set associate with key.

Author

Wei-Chen Chen , George Ostrouchov, Drew Schmidt, Pragneshkumar Patel, and Hao Yu.

Details

These functions are for internal functions. Potentially, they set information for initialization of manager and workers.

References

Programming with Big Data in R Website: https://pbdr.org/

Examples

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))
.comm.size <- comm.size()
.comm.rank <- comm.rank()

### Examples.
info.create(0L)
info.set(0L, \"file\", \"appschema\")
info.free(0L)

### Finish.
finalize()
"
# execmpi(spmd.code, nranks = 2L)
}