first commit

example/cubeICN.cpp

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+
+
+#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;
+
+void allPrint(int data){
+    int array[64];
+    int rank, size;
+    
+    MPI_Comm_rank(MCW, &rank); 
+    MPI_Comm_size(MCW, &size); 
+
+    MPI_Gather(&data,1,MPI_INT,array,1,MPI_INT,0,MCW);
+    if(!rank){
+        for(int i=0;i<size;++i)cout<<i<<" ";
+        cout<<endl;
+        for(int i=0;i<size;++i)cout<<array[i]<<" ";
+        cout<<endl;
+    }
+    return;
+}
+
+void cube(int f, int *data){
+    int rank, size;
+    int dest;
+    int mask=1;
+    mask <<= f;
+
+    MPI_Comm_rank(MCW, &rank); 
+    MPI_Comm_size(MCW, &size); 
+
+    dest = rank ^ mask;
+
+    MPI_Send(data,1,MPI_INT,dest,0,MCW);
+    MPI_Recv(data,1,MPI_INT,MPI_ANY_SOURCE,0,MCW,MPI_STATUS_IGNORE);
+
+    return;
+}
+
+
+
+int main(int argc, char **argv){
+
+    int rank, size;
+    int data;
+    MPI_Init(&argc, &argv);
+    MPI_Comm_rank(MCW, &rank); 
+    MPI_Comm_size(MCW, &size); 
+
+    data = rank;
+
+    allPrint(data);
+    cube(2,&data);
+    cout<<endl;
+    allPrint(data);
+
+
+
+    MPI_Finalize();
+
+    return 0;
+}
+