Hello, I am a new user of MPI and I would like to have your opinion on the following issue. With 1 processor I keep the data in
std::vector<std::vector<double> > X Then I call a function that takes various arguments, among which X[ i ] and X[ j ], i.e. two sub-vectors of X. With MPI I would have the same function execute on different processors for different values of i and j in X[ i ] and X[ j ]. >From my understanding since std::vector is not an MPI type it cannot be passed neither as a message nor an element of an MPI structure. I thought of using double X[200][4000] which MPI would pass but I don't see how to isolate a single row, i.e. X[99] would not make sense in this context. Any suggestion for an efficient and possibly simple solution? Thank you for your help, Alessandro
