DragonFly On-Line Manual Pages

Search: Section:  

HPL_indxg2l(3)               HPL Library Functions              HPL_indxg2l(3)


NAME

       HPL_indxg2l - Map a global index into a local one.


SYNOPSIS

       #include "hpl.h"

       int HPL_indxg2l( const int IG, const int INB, const int NB, const int
       SRCPROC, const int NPROCS );


DESCRIPTION

       HPL_indxg2l computes  the local index of a matrix entry pointed to by
       the  global index IG.  This  local  returned index is the same in all
       processes.


ARGUMENTS

       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. NB must be larger than one.

       SRCPROC (input)                 const int
               On entry, if SRCPROC = -1, the data  is not  distributed  but
               replicated,  in  which  case  this  routine returns IG in all
               processes. Otherwise, the value of SRCPROC is ignored.

       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.


SEE ALSO

       HPL_indxg2lp (3), HPL_indxg2p (3), HPL_indxl2g (3), HPL_numroc (3),
       HPL_numrocI (3).

HPL 2.1                        October 26, 2012                 HPL_indxg2l(3)

Search: Section: