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HPL_numroc(3)                HPL Library Functions               HPL_numroc(3)

NAME
       HPL_numroc - Compute the local number of row/columns.

SYNOPSIS
       #include "hpl.h"

       int HPL_numroc( const int N, const int INB, const int NB, const int
       PROC, const int SRCPROC, const int NPROCS );

DESCRIPTION
       HPL_numroc returns  the  local number of matrix rows/columns process
       PROC  will  get  if  we give out  N rows/columns starting from global
       index 0.

ARGUMENTS
       N       (input)                 const int
               On entry, N  specifies the number of rows/columns being dealt
               out. N 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.

       PROC    (input)                 const int
               On entry, PROC specifies  the coordinate of the process whose
               local portion is determined.  PROC must be at least zero  and
               strictly less than NPROCS.

       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.

SEE ALSO
       HPL_indxg2l (3), HPL_indxg2lp (3), HPL_indxg2p (3), HPL_indxl2g (3),
       HPL_numrocI (3).

HPL 2.1                        October 26, 2012                  HPL_numroc(3)