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| 2 | 1 | equemene | <HEAD>
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| 3 | 1 | equemene | <TITLE>HPL_sdrv HPL 2.0 Library Functions September 10, 2008</TITLE> |
| 4 | 1 | equemene | </HEAD>
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| 5 | 1 | equemene | |
| 6 | 1 | equemene | <BODY BGCOLOR="WHITE" TEXT = "#000000" LINK = "#0000ff" VLINK = "#000099" |
| 7 | 1 | equemene | ALINK = "#ffff00"> |
| 8 | 1 | equemene | |
| 9 | 1 | equemene | <H1>Name</H1> |
| 10 | 1 | equemene | <B>HPL_sdrv</B> Send and receive a message. |
| 11 | 1 | equemene | |
| 12 | 1 | equemene | <H1>Synopsis</H1> |
| 13 | 1 | equemene | <CODE>#include "hpl.h"</CODE><BR><BR> |
| 14 | 1 | equemene | <CODE>int</CODE> |
| 15 | 1 | equemene | <CODE>HPL_sdrv(</CODE> |
| 16 | 1 | equemene | <CODE>double *</CODE> |
| 17 | 1 | equemene | <CODE>SBUF</CODE>, |
| 18 | 1 | equemene | <CODE>int</CODE> |
| 19 | 1 | equemene | <CODE>SCOUNT</CODE>, |
| 20 | 1 | equemene | <CODE>int</CODE> |
| 21 | 1 | equemene | <CODE>STAG</CODE>, |
| 22 | 1 | equemene | <CODE>double *</CODE> |
| 23 | 1 | equemene | <CODE>RBUF</CODE>, |
| 24 | 1 | equemene | <CODE>int</CODE> |
| 25 | 1 | equemene | <CODE>RCOUNT</CODE>, |
| 26 | 1 | equemene | <CODE>int</CODE> |
| 27 | 1 | equemene | <CODE>RTAG</CODE>, |
| 28 | 1 | equemene | <CODE>int</CODE> |
| 29 | 1 | equemene | <CODE>PARTNER</CODE>, |
| 30 | 1 | equemene | <CODE>MPI_Comm</CODE> |
| 31 | 1 | equemene | <CODE>COMM</CODE> |
| 32 | 1 | equemene | <CODE>);</CODE> |
| 33 | 1 | equemene | |
| 34 | 1 | equemene | <H1>Description</H1> |
| 35 | 1 | equemene | <B>HPL_sdrv</B> |
| 36 | 1 | equemene | is a simple wrapper around MPI_Sendrecv. Its main purpose is |
| 37 | 1 | equemene | to allow for some experimentation and tuning of this simple function. |
| 38 | 1 | equemene | Messages of length less than or equal to zero are not sent nor |
| 39 | 1 | equemene | received. Successful completion is indicated by the returned error |
| 40 | 1 | equemene | code HPL_SUCCESS. |
| 41 | 1 | equemene | |
| 42 | 1 | equemene | <H1>Arguments</H1> |
| 43 | 1 | equemene | <PRE>
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| 44 | 1 | equemene | SBUF (local input) double * |
| 45 | 1 | equemene | On entry, SBUF specifies the starting address of buffer to be |
| 46 | 1 | equemene | sent. |
| 47 | 1 | equemene | </PRE>
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| 48 | 1 | equemene | <PRE>
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| 49 | 1 | equemene | SCOUNT (local input) int |
| 50 | 1 | equemene | On entry, SCOUNT specifies the number of double precision |
| 51 | 1 | equemene | entries in SBUF. SCOUNT must be at least zero. |
| 52 | 1 | equemene | </PRE>
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| 53 | 1 | equemene | <PRE>
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| 54 | 1 | equemene | STAG (local input) int |
| 55 | 1 | equemene | On entry, STAG specifies the message tag to be used for the |
| 56 | 1 | equemene | sending communication operation. |
| 57 | 1 | equemene | </PRE>
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| 58 | 1 | equemene | <PRE>
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| 59 | 1 | equemene | RBUF (local output) double * |
| 60 | 1 | equemene | On entry, RBUF specifies the starting address of buffer to be |
| 61 | 1 | equemene | received. |
| 62 | 1 | equemene | </PRE>
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| 63 | 1 | equemene | <PRE>
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| 64 | 1 | equemene | RCOUNT (local input) int |
| 65 | 1 | equemene | On entry, RCOUNT specifies the number of double precision |
| 66 | 1 | equemene | entries in RBUF. RCOUNT must be at least zero. |
| 67 | 1 | equemene | </PRE>
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| 68 | 1 | equemene | <PRE>
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| 69 | 1 | equemene | RTAG (local input) int |
| 70 | 1 | equemene | On entry, RTAG specifies the message tag to be used for the |
| 71 | 1 | equemene | receiving communication operation. |
| 72 | 1 | equemene | </PRE>
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| 73 | 1 | equemene | <PRE>
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| 74 | 1 | equemene | PARTNER (local input) int |
| 75 | 1 | equemene | On entry, PARTNER specifies the rank of the collaborative |
| 76 | 1 | equemene | process in the communication space defined by COMM. |
| 77 | 1 | equemene | </PRE>
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| 78 | 1 | equemene | <PRE>
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| 79 | 1 | equemene | COMM (local input) MPI_Comm |
| 80 | 1 | equemene | The MPI communicator identifying the communication space. |
| 81 | 1 | equemene | </PRE>
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| 82 | 1 | equemene | |
| 83 | 1 | equemene | <H1>See Also</H1> |
| 84 | 1 | equemene | <A HREF="HPL_send.html">HPL_send</A>, |
| 85 | 1 | equemene | <A HREF="HPL_recv.html">HPL_recv</A>. |
| 86 | 1 | equemene | |
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