pbdDMAT (version 0.4-2)

ddmatrix-lu: LU Factorization

Description

LU factorization for distributed matrices with R-like syntax, with calculations performed by the PBLAS and ScaLAPACK libraries.

Usage

# S4 method for ddmatrix
lu(x)

Arguments

x

numeric distributed matrices.

Value

lu() performs LU factorization.

Details

Extensions of R linear algebra functions.

Examples

# NOT RUN {
# Save code in a file "demo.r" and run with 2 processors by
# > mpiexec -np 2 Rscript demo.r

library(pbdDMAT, quiet = TRUE)
init.grid()

# don't do this in production code
x <- matrix(1:9, 3)
x <- as.ddmatrix(x)

y <- solve(t(A) %*% A)
print(y)

finalize()
# }
# NOT RUN {
# }