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<TITLE>HPL_grid_info HPL 2.0 Library Functions September 10, 2008</TITLE> |
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<BODY BGCOLOR="WHITE" TEXT = "#000000" LINK = "#0000ff" VLINK = "#000099" |
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ALINK = "#ffff00"> |
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<H1>Name</H1> |
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<B>HPL_grid_info</B> Retrieve grid information. |
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<H1>Synopsis</H1> |
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<CODE>#include "hpl.h"</CODE><BR><BR> |
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<CODE>int</CODE> |
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<CODE>HPL_grid_info(</CODE> |
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<CODE>const HPL_T_grid *</CODE> |
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<CODE>GRID</CODE>, |
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<CODE>int *</CODE> |
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<CODE>NPROW</CODE>, |
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<CODE>int *</CODE> |
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<CODE>NPCOL</CODE>, |
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<CODE>int *</CODE> |
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<CODE>MYROW</CODE>, |
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<CODE>int *</CODE> |
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<CODE>MYCOL</CODE> |
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<CODE>);</CODE> |
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<H1>Description</H1> |
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<B>HPL_grid_info</B> |
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returns the grid shape and the coordinates in the grid |
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of the calling process. Successful completion is indicated by the |
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returned error code MPI_SUCCESS. Other error codes depend on the MPI |
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implementation. |
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<H1>Arguments</H1> |
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<PRE>
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GRID (local input) const HPL_T_grid * |
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On entry, GRID points to the data structure containing the |
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process grid information. |
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NPROW (global output) int * |
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On exit, NPROW specifies the number of process rows in the |
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grid. NPROW is at least one. |
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<PRE>
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NPCOL (global output) int * |
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On exit, NPCOL specifies the number of process columns in |
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the grid. NPCOL is at least one. |
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MYROW (global output) int * |
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On exit, MYROW specifies my row process coordinate in the |
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grid. MYROW is greater than or equal to zero and less than |
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NPROW. |
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<PRE>
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MYCOL (global output) int * |
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On exit, MYCOL specifies my column process coordinate in the |
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grid. MYCOL is greater than or equal to zero and less than |
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NPCOL. |
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</PRE>
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<H1>See Also</H1> |
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<A HREF="HPL_pnum.html">HPL_pnum</A>, |
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<A HREF="HPL_grid_init.html">HPL_grid_init</A>, |
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<A HREF="HPL_grid_exit.html">HPL_grid_exit</A>. |
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