Function scatterv

boost::mpi::scatterv — Similar to boost::mpi::scatter with the difference that the number of values stored at the root process does not need to be a multiple of the communicator's size.

Synopsis

// In header: <boost/mpi/collectives.hpp>


template<typename T> 
  void scatterv(const communicator & comm, const std::vector< T > & in_values, 
                const std::vector< int > & sizes, 
                const std::vector< int > & displs, T * out_values, 
                int out_size, int root);
template<typename T> 
  void scatterv(const communicator & comm, const T * in_values, 
                const std::vector< int > & sizes, 
                const std::vector< int > & displs, T * out_values, 
                int out_size, int root);
template<typename T> 
  void scatterv(const communicator & comm, T * out_values, int out_size, 
                int root);
template<typename T> 
  void scatterv(const communicator & comm, const T * in_values, 
                const std::vector< int > & sizes, T * out_values, int root);
template<typename T> 
  void scatterv(const communicator & comm, const std::vector< T > & in_values, 
                const std::vector< int > & sizes, T * out_values, int root);

Description

Parameters:

`comm`	The communicator over which the scatter will occur.
`displs`	A vector such that the i-th entry specifies the displacement (relative to `in_values`) from which to take the outgoing data to process i. Overloaded versions for which `displs` is omitted assume that the data is contiguous at the `root` process.
`in_values`	A vector or pointer to storage that will contain the values to send to each process, indexed by the process rank. For non-root processes, this parameter may be omitted. If it is still provided, however, it will be unchanged.
`out_size`	For each non-root process this will contain the size of `out_values`.
`out_values`	The array of values received by each process.
`root`	The process ID number that will scatter the values. This value must be the same on all processes.
`sizes`	A vector containing the number of elements each non-root process will receive.