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| 3 | 1 | equemene | <TITLE>HPL_indxg2lp HPL 2.0 Library Functions September 10, 2008</TITLE> |
| 4 | 1 | equemene | </HEAD>
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| 8 | 1 | equemene | |
| 9 | 1 | equemene | <H1>Name</H1> |
| 10 | 1 | equemene | <B>HPL_indxg2lp</B> Map a local index into a global one. |
| 11 | 1 | equemene | |
| 12 | 1 | equemene | <H1>Synopsis</H1> |
| 13 | 1 | equemene | <CODE>#include "hpl.h"</CODE><BR><BR> |
| 14 | 1 | equemene | <CODE>void</CODE> |
| 15 | 1 | equemene | <CODE>HPL_indxg2lp(</CODE> |
| 16 | 1 | equemene | <CODE>int *</CODE> |
| 17 | 1 | equemene | <CODE>IL</CODE>, |
| 18 | 1 | equemene | <CODE>int *</CODE> |
| 19 | 1 | equemene | <CODE>PROC</CODE>, |
| 20 | 1 | equemene | <CODE>const int</CODE> |
| 21 | 1 | equemene | <CODE>IG</CODE>, |
| 22 | 1 | equemene | <CODE>const int</CODE> |
| 23 | 1 | equemene | <CODE>INB</CODE>, |
| 24 | 1 | equemene | <CODE>const int</CODE> |
| 25 | 1 | equemene | <CODE>NB</CODE>, |
| 26 | 1 | equemene | <CODE>const int</CODE> |
| 27 | 1 | equemene | <CODE>SRCPROC</CODE>, |
| 28 | 1 | equemene | <CODE>const int</CODE> |
| 29 | 1 | equemene | <CODE>NPROCS</CODE> |
| 30 | 1 | equemene | <CODE>);</CODE> |
| 31 | 1 | equemene | |
| 32 | 1 | equemene | <H1>Description</H1> |
| 33 | 1 | equemene | <B>HPL_indxg2lp</B> |
| 34 | 1 | equemene | computes the local index of a matrix entry pointed to by |
| 35 | 1 | equemene | the global index IG as well as the process coordinate which posseses |
| 36 | 1 | equemene | this entry. The local returned index is the same in all processes. |
| 37 | 1 | equemene | |
| 38 | 1 | equemene | <H1>Arguments</H1> |
| 39 | 1 | equemene | <PRE>
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| 40 | 1 | equemene | IL (output) int * |
| 41 | 1 | equemene | On exit, IL specifies the local index corresponding to IG. IL |
| 42 | 1 | equemene | is at least zero. |
| 43 | 1 | equemene | </PRE>
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| 44 | 1 | equemene | <PRE>
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| 45 | 1 | equemene | PROC (output) int * |
| 46 | 1 | equemene | On exit, PROC is the coordinate of the process owning the |
| 47 | 1 | equemene | entry specified by the global index IG. PROC is at least zero |
| 48 | 1 | equemene | and less than NPROCS. |
| 49 | 1 | equemene | </PRE>
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| 50 | 1 | equemene | <PRE>
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| 51 | 1 | equemene | IG (input) const int |
| 52 | 1 | equemene | On entry, IG specifies the global index of the matrix entry. |
| 53 | 1 | equemene | IG must be at least zero. |
| 54 | 1 | equemene | </PRE>
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| 55 | 1 | equemene | <PRE>
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| 56 | 1 | equemene | INB (input) const int |
| 57 | 1 | equemene | On entry, INB specifies the size of the first block of the |
| 58 | 1 | equemene | global matrix. INB must be at least one. |
| 59 | 1 | equemene | </PRE>
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| 60 | 1 | equemene | <PRE>
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| 61 | 1 | equemene | NB (input) const int |
| 62 | 1 | equemene | On entry, NB specifies the blocking factor used to partition |
| 63 | 1 | equemene | and distribute the matrix A. NB must be larger than one. |
| 64 | 1 | equemene | </PRE>
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| 65 | 1 | equemene | <PRE>
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| 66 | 1 | equemene | SRCPROC (input) const int |
| 67 | 1 | equemene | On entry, if SRCPROC = -1, the data is not distributed but |
| 68 | 1 | equemene | replicated, in which case this routine returns IG in all |
| 69 | 1 | equemene | processes. Otherwise, the value of SRCPROC is ignored. |
| 70 | 1 | equemene | </PRE>
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| 71 | 1 | equemene | <PRE>
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| 72 | 1 | equemene | NPROCS (input) const int |
| 73 | 1 | equemene | On entry, NPROCS specifies the total number of process rows |
| 74 | 1 | equemene | or columns over which the matrix is distributed. NPROCS must |
| 75 | 1 | equemene | be at least one. |
| 76 | 1 | equemene | </PRE>
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| 77 | 1 | equemene | |
| 78 | 1 | equemene | <H1>See Also</H1> |
| 79 | 1 | equemene | <A HREF="HPL_indxg2l.html">HPL_indxg2l</A>, |
| 80 | 1 | equemene | <A HREF="HPL_indxg2p.html">HPL_indxg2p</A>, |
| 81 | 1 | equemene | <A HREF="HPL_indxl2g.html">HPL_indxl2g</A>, |
| 82 | 1 | equemene | <A HREF="HPL_numroc.html">HPL_numroc</A>, |
| 83 | 1 | equemene | <A HREF="HPL_numrocI.html">HPL_numrocI</A>. |
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