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### Copyright (C) 2002 Hao Yu
mpi.barrier <- function(comm=1){
.Call("mpi_barrier", as.integer(comm),PACKAGE = "Rmpi")
}
mpi.comm.set.errhandler <- function(comm=1){
.Call("mpi_comm_set_errhandler", as.integer(comm),
PACKAGE = "Rmpi")
}
mpi.comm.test.inter <- function(comm=2){
if(mpi.comm.is.null(comm))
stop("NULL communicator")
.Call("mpi_comm_test_inter",as.integer(comm),PACKAGE = "Rmpi")
}
mpi.comm.rank <- function(comm=1){
.Call("mpi_comm_rank", as.integer(comm),PACKAGE = "Rmpi")
}
mpi.comm.size <- function(comm=1){
if (.Call("mpi_comm_is_null", as.integer(comm),
PACKAGE = "Rmpi")==1)
0
else
.Call("mpi_comm_size",as.integer(comm),PACKAGE = "Rmpi")
}
mpi.comm.dup <- function(comm, newcomm){
.Call("mpi_comm_dup", as.integer(comm), as.integer(newcomm),
PACKAGE = "Rmpi")
}
mpi.comm.remote.size <- function(comm=2){
.Call("mpi_comm_remote_size", as.integer(comm),PACKAGE = "Rmpi")
}
mpi.comm.free <- function(comm=1){
if (mpi.comm.size(comm)==0){
tmp<-paste("It seems no members(slaves) associated with comm", comm)
stop(tmp)
}
.Call("mpi_comm_free",as.integer(comm),PACKAGE = "Rmpi")
}
mpi.abort <- function(comm=1){
if (mpi.comm.size(comm)==0){
tmp<-paste("It seems no members(slaves) associated with comm", comm)
stop(tmp)
}
.Call("mpi_abort",as.integer(comm),PACKAGE = "Rmpi")
}
mpi.comm.disconnect <- function(comm=1){
if (mpi.comm.size(comm)==0){
tmp<-paste("It seems no members(slaves) associated with comm", comm)
stop(tmp)
}
if (!is.loaded("mpi_comm_disconnect"))
stop("MPI_Comm_disconnect is not supported.")
.Call("mpi_comm_disconnect",as.integer(comm),PACKAGE = "Rmpi")
}
mpi.comm.spawn <- function(slave,
slavearg=character(0),
nslaves=mpi.universe.size(),
info=0,
root=0,
intercomm=2,
quiet=FALSE){
if (!is.loaded("mpi_comm_spawn"))
stop("MPI_Comm_spawn is not supported.")
if (!is.character(slave))
stop("character argument (slave) expected")
#if (nslaves > mpi.universe.size()){
# tmp <- paste("Number of R slaves is over",
# mpi.universe.size(),": maximum CPUs.")
# warning(tmp)
# }
else if (nslaves <= 0)
stop("Choose a positive number of slaves.")
.Call("mpi_comm_spawn",
as.character(slave),
as.character(slavearg),
as.integer(nslaves),
as.integer(info),
as.integer(root),
as.integer(intercomm),
as.integer(quiet),
PACKAGE = "Rmpi")
}
mpi.comm.get.parent <- function(comm=2){
if (!is.loaded("mpi_comm_get_parent"))
stop("MPI_Comm_get_parent is not supported.")
.Call("mpi_comm_get_parent", as.integer(comm),PACKAGE = "Rmpi")
}
mpi.comm.is.null <- function(comm){
as.logical(.Call("mpi_comm_is_null", as.integer(comm),
PACKAGE = "Rmpi"))
}
mpi.intercomm.merge <- function(intercomm=2,high=0,comm=1){
.Call("mpi_intercomm_merge", as.integer(intercomm),
as.integer(high),
as.integer(comm),PACKAGE = "Rmpi")
}
mpi.comm.c2f <- function(comm=1){
.Call("mpi_comm_c2f", as.integer(comm),PACKAGE = "Rmpi")
}
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