#include <rabit/rabit.h>
using namespace rabit;
const int N = 3;
int main(int argc, char *argv[]) {
rabit::Init(argc, argv);
std::string s;
if (rabit::GetRank() == 0) s = "hello world";
printf("@node[%d] before-broadcast: s=\"%s\"\n",
rabit::GetRank(), s.c_str());
// broadcast s from node 0 to all other nodes
rabit::Broadcast(&s, 0);
printf("@node[%d] after-broadcast: s=\"%s\"\n",
rabit::GetRank(), s.c_str());
rabit::Finalize();
return 0;
}