1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
static char rcsid[] =
"$Id: master1.c,v 1.5 2009/01/23 01:12:52 pvmsrc Exp $";
/*
* PVM version 3.4: Parallel Virtual Machine System
* University of Tennessee, Knoxville TN.
* Oak Ridge National Laboratory, Oak Ridge TN.
* Emory University, Atlanta GA.
* Authors: J. J. Dongarra, G. E. Fagg, M. Fischer
* G. A. Geist, J. A. Kohl, R. J. Manchek, P. Mucci,
* P. M. Papadopoulos, S. L. Scott, and V. S. Sunderam
* (C) 1997 All Rights Reserved
*
* NOTICE
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted
* provided that the above copyright notice appear in all copies and
* that both the copyright notice and this permission notice appear in
* supporting documentation.
*
* Neither the Institutions (Emory University, Oak Ridge National
* Laboratory, and University of Tennessee) nor the Authors make any
* representations about the suitability of this software for any
* purpose. This software is provided ``as is'' without express or
* implied warranty.
*
* PVM version 3 was funded in part by the U.S. Department of Energy,
* the National Science Foundation and the State of Tennessee.
*/
#include <stdio.h>
#ifdef HASSTDLIB
#include <stdlib.h>
#endif
#include "pvm3.h"
#define SLAVENAME "slave1"
main()
{
int mytid; /* my task id */
int tids[32]; /* slave task ids */
int n, nproc, numt, i, who, msgtype, nhost, narch;
float data[100], result[32];
struct pvmhostinfo *hostp;
/* enroll in pvm */
mytid = pvm_mytid();
/* Set number of slaves to start */
pvm_config( &nhost, &narch, &hostp );
nproc = nhost * 3;
if( nproc > 32 ) nproc = 32 ;
printf("Spawning %d worker tasks ... " , nproc);
/* start up slave tasks */
numt=pvm_spawn(SLAVENAME, (char**)0, 0, "", nproc, tids);
if( numt < nproc ){
printf("\n Trouble spawning slaves. Aborting. Error codes are:\n");
for( i=numt ; i<nproc ; i++ ) {
printf("TID %d %d\n",i,tids[i]);
}
for( i=0 ; i<numt ; i++ ){
pvm_kill( tids[i] );
}
pvm_exit();
exit(1);
}
printf("SUCCESSFUL\n");
/* Begin User Program */
n = 100;
/* initialize_data( data, n ); */
for( i=0 ; i<n ; i++ ){
data[i] = 1.0;
}
/* Broadcast initial data to slave tasks */
pvm_initsend(PvmDataDefault);
pvm_pkint(&nproc, 1, 1);
pvm_pkint(tids, nproc, 1);
pvm_pkint(&n, 1, 1);
pvm_pkfloat(data, n, 1);
pvm_mcast(tids, nproc, 0);
/* Wait for results from slaves */
msgtype = 5;
for( i=0 ; i<nproc ; i++ ){
pvm_recv( -1, msgtype );
pvm_upkint( &who, 1, 1 );
pvm_upkfloat( &result[who], 1, 1 );
printf("I got %f from %d; ",result[who],who);
if (who == 0)
printf( "(expecting %f)\n", (nproc - 1) * 100.0);
else
printf( "(expecting %f)\n", (2 * who - 1) * 100.0);
}
/* Program Finished exit PVM before stopping */
pvm_exit();
}
|
