Hi , 

I need to design a data structure to transfer data between nodes by boost.MPI. 

Some elements of the the structure has dynamic size. 

For example, 

typedef struct{

double data1;

vector<double> dataVec; 

} myDataType;

The size of the dataVec depends on some intermidiate computing results.

If I only declear it as the above myDataType, I think, only a pointer is transfered. 

When the data receiver try to access the elements of vector<double> dataVec, it got 

segmentation fault error.

But, I also need to use the myDataType to declear other data structures. 

such as vector<myDataType> newDataVec;