Nothing
### For general methods.
convert.data <- function(X, method.own.X = .PMC.CT$method.own.X,
rank.own.X = .pbd_env$SPMD.CT$rank.source, comm = .pbd_env$SPMD.CT$comm){
COMM.SIZE <- spmd.comm.size(comm)
COMM.RANK <- spmd.comm.rank(comm)
# Assign X to .pmclustEnv
# for a spmd matrix.
if(is.null(X)){
X <- matrix(0, nrow = 0, ncol = 0)
}
if(method.own.X[1] %in% c("gbdr", "spmdr")){
# For spmd row-major
p <- ncol(X)
p.all <- spmd.allgather.integer(p, integer(COMM.SIZE), comm = comm)
if(any(p.all != p)){
comm.stop("X should have the same # of columns.")
}
.pmclustEnv$X.spmd <- X
} else if(method.own.X[1] == "common"){
# X is common in all ranks.
N <- nrow(X)
N.all <- spmd.allgather.integer(N, integer(COMM.SIZE), comm = comm)
if(any(N.all != N)){
comm.stop("X should have the same # of rows.")
}
p <- ncol(X)
p.all <- spmd.allgather.integer(p, integer(COMM.SIZE), comm = comm)
if(any(p.all != p)){
comm.stop("X should have the same # of columns.")
}
jid <- get.jid(nrow(X))
.pmclustEnv$X.spmd <- X[jid,]
} else if(method.own.X[1] == "single"){
# X only exist in a single rank, 0 by default.
p <- -1
if(COMM.RANK == rank.own.X){
if(is.matrix(X)){
p <- ncol(X)
}
}
p <- spmd.bcast.integer(as.integer(p), rank.source = rank.own.X,
comm = comm)
if(p == -1){
comm.stop("X should be a matrix in rank.own.X.")
} else{
if(COMM.RANK != rank.own.X){
X <- matrix(0, nrow = 0, ncol = p)
}
}
.pmclustEnv$X.spmd <- load.balance(X)
} else{
comm.stop("method.own.X is not found.")
}
invisible()
} # End of convert.data().
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