Synergy User Manual and Tutorial. - THE CORE MEMORY

Synergy User Manual and Tutorial
// Transfer the message to PVM storage
pvm_pkstr(buf);
// Send the message signal to all workers
for(i=0; i< NUM_WKRS; i++)
pvm_send(tid[i], msgtag);
// Print messages sent to workers
printf(“Master: Messages sent to %d workers\n”)
// Get replies from workers
for(i=0; i< NUM_WKRS; i++){
}
// Execute a blocking receive to wait for reply from any (-1) worker
pvm_recv(-1, msgtag);
// Put the received message in the buffer
pvm_upkstr(buf);
// Print the message
printf("Master: From %x: %s\n", tid, buf);
// Print end message
printf(“Master: Application is finished\n”);
}
}
// Else the spawn was not successful
else
printf("Cannot start worker program\n");
// Exit application
pvm_exit();
The master program spawns a number of workers, sends the “Hello worker…” message
and waits for a reply. After the reply is received, it is printed to screen and the master
terminates. The worker program is:
// worker.c: “Hello Master” program
#include
main(){
int ptid; // Parents task ID
int msgtag; // Message tag to ID a message
char buf[100]; // Message string buffer
char host[128]; // Host machine name
FILE* fd; // File in which to write master’s message
// Open file to store message
fd = fopen(“msg.txt”, "a");
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