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<TITLE>HPL_indxg2lp HPL 2.0 Library Functions September 10, 2008</TITLE> |
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<H1>Name</H1> |
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<B>HPL_indxg2lp</B> Map a local index into a global one. |
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<H1>Synopsis</H1> |
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<CODE>#include "hpl.h"</CODE><BR><BR> |
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<CODE>void</CODE> |
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<CODE>HPL_indxg2lp(</CODE> |
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<CODE>int *</CODE> |
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<CODE>IL</CODE>, |
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<CODE>int *</CODE> |
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<CODE>PROC</CODE>, |
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<CODE>const int</CODE> |
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<CODE>IG</CODE>, |
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<CODE>const int</CODE> |
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<CODE>INB</CODE>, |
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<CODE>const int</CODE> |
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<CODE>NB</CODE>, |
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<CODE>const int</CODE> |
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<CODE>SRCPROC</CODE>, |
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<CODE>const int</CODE> |
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<CODE>NPROCS</CODE> |
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<CODE>);</CODE> |
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<H1>Description</H1> |
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<B>HPL_indxg2lp</B> |
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computes the local index of a matrix entry pointed to by |
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the global index IG as well as the process coordinate which posseses |
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this entry. The local returned index is the same in all processes. |
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<H1>Arguments</H1> |
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<PRE>
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IL (output) int * |
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On exit, IL specifies the local index corresponding to IG. IL |
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is at least zero. |
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<PRE>
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PROC (output) int * |
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On exit, PROC is the coordinate of the process owning the |
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entry specified by the global index IG. PROC is at least zero |
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and less than NPROCS. |
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</PRE>
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<PRE>
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IG (input) const int |
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On entry, IG specifies the global index of the matrix entry. |
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IG must be at least zero. |
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</PRE>
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<PRE>
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INB (input) const int |
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On entry, INB specifies the size of the first block of the |
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global matrix. INB must be at least one. |
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</PRE>
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<PRE>
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NB (input) const int |
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On entry, NB specifies the blocking factor used to partition |
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and distribute the matrix A. NB must be larger than one. |
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</PRE>
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<PRE>
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SRCPROC (input) const int |
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On entry, if SRCPROC = -1, the data is not distributed but |
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replicated, in which case this routine returns IG in all |
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processes. Otherwise, the value of SRCPROC is ignored. |
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</PRE>
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<PRE>
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NPROCS (input) const int |
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On entry, NPROCS specifies the total number of process rows |
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or columns over which the matrix is distributed. NPROCS must |
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be at least one. |
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</PRE>
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<H1>See Also</H1> |
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<A HREF="HPL_indxg2l.html">HPL_indxg2l</A>, |
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<A HREF="HPL_indxg2p.html">HPL_indxg2p</A>, |
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<A HREF="HPL_indxl2g.html">HPL_indxl2g</A>, |
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<A HREF="HPL_numroc.html">HPL_numroc</A>, |
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<A HREF="HPL_numrocI.html">HPL_numrocI</A>. |
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