Re: [Boost-users] [MPI] lifetime of data sent through communicator::isend()

Hi Riccardo, On Nov 20, 2010, at 11:50 AM, Riccardo Murri wrote:

I'm using mpi::communicator::isend where the payload data comes from a pointer (e.g., "req = comm_.isend(dest, tag. *data)"). When am I free to "delete" the pointer? Immediately after isend() returns? Or should I wait until the request is completed?

According to the documentation, isend is non-blocking and returns immediately. I think you'll need to query the returned request object to determine when you can safely delete the pointer (after the message has been delivered).

Does setting BOOST_MPI_HOMOGENEOUS have any influence on this?

I'm not sure about this. -- Noel