Hi Jack, On Wed, Aug 4, 2010 at 6:25 AM, Jack Bryan <dtustud...@hotmail.com> wrote: > I need to transfer some data, which is C++ class with some vector<float> > member data. > I want to use MPI_Bcast(buffer, count, datatype, root, comm); > May I use MPI_Datatype to define customized data structure that contain C++ > class ?
No, unless you have access to the implementation details of the std::vector class (which would render your code dependent on one particular implementation of the STL, and thus non-portable). Boost.MPI provides support for std C++ datatypes; if you want to keep to "plain MPI" calls, then your only choice is to use C-style arrays. Regards, Riccardo
