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HPL_numrocI(3)               HPL Library Functions              HPL_numrocI(3)


NAME

       HPL_numrocI - Compute the local number of row/columns.


SYNOPSIS

       #include "hpl.h"

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


DESCRIPTION

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


ARGUMENTS

       N       (input)                 const int
               On entry, N  specifies the number of rows/columns being dealt
               out. N must be at least zero.

       I       (input)                 const int
               On entry, I  specifies the global index of the matrix  entry I
               must be at least zero.

       INB     (input)                 const int
               On entry,  INB  specifies  the size of the first block of th
               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 whos
               local portion is determined.  PROC must be at least zero  an
               strictly less than NPROCS.

       SRCPROC (input)                 const int
               On entry,  SRCPROC  specifies  the coordinate of the  proces
               that possesses the first row or column of the matrix. SRCPRO
               must be at least zero and strictly less than NPROCS.

       NPROCS  (input)                 const int
               On entry,  NPROCS  specifies the total number of process row or
               columns over which the matrix is distributed.  NPROCS mus be at
               least one.


SEE ALSO

       HPL_indxg2l (3), HPL_indxg2lp (3), HPL_indxg2p (3), HPL_indxl2g (3),
       HPL_numroc (3).

HPL 2.1                        October 26, 2012                 HPL_numrocI(3)

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