id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
4348,[Boost.MPI] wait_any and wait_some don't wait at all,Didier Devaurs <ddevaurs@…>,anonymous,"Hello,
The functions wait_any and wait_some don't work properly. If they were really waiting for a request to be completed (like wait_all is doing) the program below would hang indefinitely.
Currently, the function wait_any tests the requests, and since none is completed, returns -1. So it simply implements a test_all function.


int main()
{
  boost::mpi::environment environment;

  boost::mpi::communicator world;

  int processNumber = world.size();

  if (world.rank() == 0) {
    boost::mpi::request requests[processNumber];

    for (int source = 1; source < processNumber; ++source)
      requests[source] = world.irecv(source, 0);
    std::cout << boost::mpi::wait_any(requests, requests + processNumber).first.source();
  }
  return 0;
}


Didier Devaurs",Bugs,closed,Boost 1.43.0,mpi,Boost 1.43.0,Problem,invalid,,