Rmpi (version 0.7-2.1)

mpi.cart.coords: MPI_Cart_coords

Description

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

Usage

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

Value

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

Arguments

comm

Communicator with Cartesian structure

rank

rank of a process within group

maxdims

length of vector coord in the calling program

Author

Alek Hunchak and Hao Yu

Details

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.

References

https://www.open-mpi.org/

See Also

mpi.cart.rank

Examples

# \donttest{
#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)
# }