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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).| December 2, 2018 | HPL 2.3 |
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