pbdMPI (version 0.5-2)

Set global pbd options: Set Global pbdR Options

Description

This is an advanced function to set pbdR options.

Usage

pbd_opt(..., bytext = "", envir = .GlobalEnv)

Value

No value is returned.

Arguments

...

in argument format option = value to set .pbd_env$option <- value inside the envir.

bytext

in text format "option = value" to set .pbd_env$option <- value inside the envir.

envir

by default the global environment is used.

Author

Wei-Chen Chen and Drew Schmidt.

Details

... allows multiple options in envir$.pbd_env, but only in a simple way.

bytext allows to assign options by text in envir$.pbd_env, but can assign advanced objects. For example, "option$suboption <- value" will set envir$.pbd_env$option$suboption <- value.

References

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

See Also

.pbd_env, SPMD.CT(), SPMD.OP(), SPMD.IO(), SPMD.TP(), and .mpiopt_init().

Examples

if (FALSE) {
### Save code in a file "demo.r" and run with 4 processors by
### SHELL> mpiexec -np 4 Rscript demo.r

### Initialize
suppressMessages(library(pbdMPI, quietly = TRUE))

### Examples.
ls(.pbd_env)
pbd_opt(ICTXT = c(2, 2))
pbd_opt(bytext = "grid.new <- list(); grid.new$ICTXT <- c(4, 4)")
pbd_opt(BLDIM = c(16, 16), bytext = "grid.new$BLDIM = c(8, 8)")
ls(.pbd_env)
.pbd_env$ICTXT
.pbd_env$BLDIM
.pbd_env$grid.new

### Finish.
finalize()
}