pbdDMAT (version 0.4-2)

ddmatrix-chol: Cholesky Factorization

Description

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

Usage

# S4 method for ddmatrix
chol(x)

Arguments

x

numeric distributed matrices.

...

Ignored.

Value

chol() performs Cholesky 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()

x <- ddmatrix(1:9, 3, bldim=2)

y <- solve(crossprod(x))
y

finalize()
# }
# NOT RUN {
# }