I am trying to use the following to catch failed processes, void* iAttrPtr; MPI::COMM_WORLD.Get_attr(MPICH_ATTR_FAILED_PROCESSES, iAttrPtr); On Linux, the code compiled but produced a Segmentation fault, ===================================================================================== = BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES = EXIT CODE: 11 = CLEANING UP REMAINING PROCESSES = YOU CAN IGNORE THE BELOW CLEANUP MESSAGES ===================================================================================== APPLICATION TERMINATED WITH THE EXIT STRING: Segmentation fault (signal 11) In Visual Studio 2010, the code produces linking error, error LNK2001: unresolved external symbol MPICH_ATTR_FAILED_PROCESSES I am using MPICH2 1.4.1. Your help on this issue will be greatly appreciated. Zhaoming