int main(int argc, char* argv[])
{
PI_PROCESS* q;
PI_PROCESS* r;
PI_Configure(&argc, &argv);
q = PI_CreateProcess(proc_q, 0, NULL);
r = PI_CreateProcess(proc_r, 0, NULL);
main_q = PI_CreateChannel(PI_MAIN, q);
q_r = PI_CreateChannel(q, r);
r_main = PI_CreateChannel(r, PI_MAIN);
PI_StartAll();
PI_Write(main_q, "%d", 0);
PI_StopMain(0);
return 0;
}
/*
Creates the workers. Setups up channels from the workers to PI_MAIN.
Setups up channels to the workers from PI_Main. Bundles the channels
from the workers to PI_Main.
*/
void SetupWorkers(int workerCount){
int i;
// If there are no workers, we have nothing to setup, so just leave.
if(workerCount == 0){return;}
Worker = malloc( workerCount * sizeof(PI_PROCESS*) );
toWorker = malloc( workerCount * sizeof(PI_CHANNEL*) );
result = malloc( workerCount * sizeof(PI_CHANNEL*) );
for ( i=0; i<workerCount; i++ ) {
Worker[i] = PI_CreateProcess( workerFunc, i, NULL );
toWorker[i] = PI_CreateChannel( PI_MAIN, Worker[i] );
result[i] = PI_CreateChannel( Worker[i], PI_MAIN );
}
fromWorkerBundle = PI_CreateBundle(PI_SELECT, result, workerCount);
}
int main( int argc, char *argv[] ) {
int i, sum;
int send[5];
int recv[5 * NUM_CHANS];
float avg;
for ( i = 0; i < 5; i++ ) {
send[i] = i + 1;
}
PI_Configure( &argc, &argv );
for ( i = 0; i < NUM_PROCS; i++ ) {
procs[i] = PI_CreateProcess( WorkFunc, i, NULL );
chans[i] = PI_CreateChannel( PI_MAIN, procs[i] );
chans_out[i] = PI_CreateChannel( procs[i], PI_MAIN );
}
broadcast_bundle = PI_CreateBundle( PI_BROADCAST, chans, NUM_CHANS );
gather_bundle = PI_CreateBundle( PI_GATHER, chans_out, NUM_CHANS );
PI_StartAll();
PI_Broadcast( broadcast_bundle, "%5d", send );
PI_Gather( gather_bundle, "%5d", recv );
sum = 0;
for ( i = 0; i < 5 * NUM_CHANS; i++ ) {
sum += recv[i];
}
avg = sum / ( 5.0f * NUM_CHANS );
printf( "\nThe average was: %f\n", avg );
PI_StopMain( 0 );
return 0;
}