// // Copyright (c) 2004-2006 The Trustees of Indiana University and Indiana // University Research and Technology // Corporation. All rights reserved. // Copyright (c) 2006 Cisco Systems, Inc. All rights reserved. // // Sample MPI "hello world" application in C++ // // MPI's C++ bindings unfortunately redefined some POSIX constants // (SEEK_SET and friends). Fortunately, most versions of // and are sane enough that if you include "mpi.h" first, // they won't redefine the problematic values. Note, however, that // this means that you should not make calls to fseek(3) (and friends) // in a C++ source file that includes ! #include "mpi.h" #include int main(int argc, char **argv) { int rank, size; MPI::Init(); rank = MPI::COMM_WORLD.Get_rank(); size = MPI::COMM_WORLD.Get_size(); std::cout << "Hello, world! I am " << rank << " of " << size << std::endl; MPI::Finalize(); return 0; }