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Subject: [OMPI users] Open MPI dynamic data structure error
From: Jack Bryan (dtustudy68_at_[hidden])
Date: 2010-10-19 16:40:50


Hi,
I need to design a data structure to transfer data between nodes on Open MPI system.
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;
I cannot declear myDataType in a function , sucjh as main(), I got errors:
 main.cpp:200: error: main(int, char**)::myDataType; uses local type main(int, char**)::myDataType;

Any help is really appreciated.
thanks
Jack
Oct. 19 2010