NAME

HPL_dlocmax - finds the maximum entry in matrix column.

SYNOPSIS

#include "hpl.h"

void HPL_dlocmax( HPL_T_panel * PANEL, const int N, const int II, const int JJ, double * WORK );

DESCRIPTION

HPL_dlocmax finds the maximum entry in the current column and packs the useful information in WORK[0:3]. On exit, WORK[0] contains the local maximum absolute value scalar, WORK[1] is the corresponding local row index, WORK[2] is the corresponding global row index, and WORK[3] is the coordinate of the process owning this max. When N is less than 1, the WORK[0:2] is initialized to zero, and WORK[3] is set to the total number of process rows.

ARGUMENTS

PANEL (local input/output) HPL_T_panel *: On entry, PANEL points to the data structure containing the panel information.
N (local input) const int: On entry, N specifies the local number of rows of the column of A on which we operate.
II (local input) const int: On entry, II specifies the row offset where the column to be operated on starts with respect to the panel.
JJ (local input) const int: On entry, JJ specifies the column offset where the column to be operated on starts with respect to the panel.
WORK (local workspace) double *: On entry, WORK is a workarray of size at least 4. On exit, WORK[0] contains the local maximum absolute value scalar, WORK[1] contains the corresponding local row index, WORK[2] contains the corresponding global row index, and WORK[3] is the coordinate of process owning this max.

NAME

SYNOPSIS

DESCRIPTION

ARGUMENTS

SEE ALSO