HPL_indxg2p HPL 2.2 Library Functions February 24, 2016
Map a global index into a process coordinate.
computes the process coordinate which posseses the entry
of a matrix specified by a global index IG.
IG (input) const int
On entry, IG specifies the global index of the matrix entry.
IG must be at least zero.
INB (input) const int
On entry, INB specifies the size of the first block of the
global matrix. INB must be at least one.
NB (input) const int
On entry, NB specifies the blocking factor used to partition
and distribute the matrix A. NB must be larger than one.
SRCPROC (input) const int
On entry, SRCPROC specifies the coordinate of the process
that possesses the first row or column of the matrix. SRCPROC
must be at least zero and strictly less than NPROCS.
NPROCS (input) const int
On entry, NPROCS specifies the total number of process rows
or columns over which the matrix is distributed. NPROCS must
be at least one.