mpi.cart.coords: MPI\_Cart\_coords
In snoweye/Rmpi_PROF: Interface (Wrapper) to MPI (Message-Passing Interface)

Description Usage Arguments Details Value Author(s) References See Also Examples

mpi.cart.coords translates a rank to its Cartesian topology coordinate.

1	mpi.cart.coords(comm=3, rank, maxdims)

`comm`	Communicator with Cartesian structure
`rank`	rank of a process within group
`maxdims`	length of vector coord in the calling program

This function is the rank-to-coordinates translator. It is the inverse map of mpi.cart.rank. maxdims is at least as big as ndims as returned by mpi.cartdim.get.

mpi.cart.coords returns an integer array containing the Cartesian coordinates of specified process.

Alek Hunchak and Hao Yu

http://www.lam-mpi.org/, http://www-unix.mcs.anl.gov/mpi/www/www3/

mpi.cart.rank

## Not run: 
#Need at least 9 slaves
mpi.bcast.cmd(mpi.cart.create(1,c(3,3),c(F,T)))
mpi.cart.create(1,c(3,3),c(F,T))
mpi.cart.coords(3,4,2)

## End(Not run)