if (not TRACE_smpi_view_internals())
TRACE_smpi_send(rank, rank, dst_traced, 0, size*MPI_CURRENT_TYPE->size());
MPI_Request request = Request::isend(nullptr, size, MPI_CURRENT_TYPE, to, 0, MPI_COMM_WORLD);
if (not TRACE_smpi_view_internals())
TRACE_smpi_send(rank, rank, dst_traced, 0, size*MPI_CURRENT_TYPE->size());
MPI_Request request = Request::isend(nullptr, size, MPI_CURRENT_TYPE, to, 0, MPI_COMM_WORLD);