first commit

HW2/pachinko.cpp

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+#include <time.h>
+#include <iostream>
+#include <mpi.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+//#include "/usr/local/include/mpi.h"
+#define MCW MPI_COMM_WORLD
+
+using namespace std;
+
+int main(int argc, char **argv){
+
+    int rank, size;
+    int data;
+    int dest;
+    MPI_Init(&argc, &argv);
+    MPI_Comm_rank(MCW, &rank); 
+    MPI_Comm_size(MCW, &size); 
+    srand(time(NULL));
+
+
+    if(rank==0){
+        for(int i=0;i<size;++i)cout<<" "<<i<<" ";
+        cout<<endl;
+        
+        data=rand() % 20;
+        MPI_Send(&data,1,MPI_INT,0,0,MCW);
+    }
+    
+    while(1){
+        MPI_Recv(&data,1,MPI_INT,MPI_ANY_SOURCE,0,MCW,MPI_STATUS_IGNORE);
+        if(data<0)break;
+        sleep(1);
+        for(int i=0;i<rank;++i)cout<<"   ";
+        cout<< data <<endl;
+
+        if(data != 0){
+            data --;
+        }else{
+            cout << rank << " Is the Loser" << endl;
+            cout << endl << endl; 
+            for(int i = 0; i < size; i++){
+                data=-1;
+                for(int i=0;i<size;++i) MPI_Send(&data,1,MPI_INT,i,0,MCW);
+            }
+            break;
+        }
+
+        dest = rand() % size;
+        if(dest == rank){
+            dest = dest -1;
+        }
+
+        MPI_Send(&data,1,MPI_INT,dest,0,MCW);
+    }
+    cout<<"rank "<<rank<<" is done.\n";
+
+    MPI_Finalize();
+
+    return 0;
+}
+