base.ownany {pbdBASE} | R Documentation |
For advanced users only.
base.ownany(dim, bldim, ICTXT = 0)
dim |
global dimension |
bldim |
blocking dimension |
ICTXT |
BLACS context |
A simple wrapper of numroc. The return is the answer to
the question 'do I own any of the global matrix?'. Passing a distributed
matrix is allowed, but often it is convenient to determine that information
without even having a distributed matrix on hand. In this case, explicitly
passing the appropriate information to the arguments dim=
,
bldim=
(and CTXT=
as necessary, since it defaults to 0) while
leaving x
missing will produce the desired result. See the examples
below for more clarity.
The return for each function is local.
spmd.code = " suppressMessages(library(pbdBASE)) init.grid() iown <- ownany(dim=c(4, 4), bldim=c(2, 2), CTXT=0) comm.print(iown, all.rank=T) finalize() " pbdMPI::execmpi(spmd.code = spmd.code, nranks = 2L)