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<TITLE>HPL_numroc HPL 2.0 Library Functions September 10, 2008</TITLE>
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<H1>Name</H1>
<B>HPL_numroc</B> Compute the local number of row/columns.
<H1>Synopsis</H1>
<CODE>#include "hpl.h"</CODE><BR><BR>
<CODE>int</CODE>
<CODE>HPL_numroc(</CODE>
<CODE>const int</CODE>
<CODE>N</CODE>,
<CODE>const int</CODE>
<CODE>INB</CODE>,
<CODE>const int</CODE>
<CODE>NB</CODE>,
<CODE>const int</CODE>
<CODE>PROC</CODE>,
<CODE>const int</CODE>
<CODE>SRCPROC</CODE>,
<CODE>const int</CODE>
<CODE>NPROCS</CODE>
<CODE>);</CODE>
<H1>Description</H1>
<B>HPL_numroc</B>
returns the local number of matrix rows/columns process
PROC will get if we give out N rows/columns starting from global
index 0.
<H1>Arguments</H1>
<PRE>
N (input) const int
On entry, N specifies the number of rows/columns being dealt
out. N must be at least zero.
</PRE>
<PRE>
INB (input) const int
On entry, INB specifies the size of the first block of the
global matrix. INB must be at least one.
</PRE>
<PRE>
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.
</PRE>
<PRE>
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.
</PRE>
<PRE>
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.
</PRE>
<PRE>
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.
</PRE>
<H1>See Also</H1>
<A HREF="HPL_indxg2l.html">HPL_indxg2l</A>,
<A HREF="HPL_indxg2lp.html">HPL_indxg2lp</A>,
<A HREF="HPL_indxg2p.html">HPL_indxg2p</A>,
<A HREF="HPL_indxl2g.html">HPL_indxl2g</A>,
<A HREF="HPL_numrocI.html">HPL_numrocI</A>.
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