MPI_Finalize() seems not work while running the example dataset.

[tianyma]

I try to run the example dataset

mpirun -n 72 pfsm -file ./Datasets/lg/patent_citations.lg -freq 28000 -threads 4

but in the end, the output stops at

Graph loading [master] took 68 sec and 701 ms
Mining took 101 sec and 155 ms

I looked at the code, the next it should exec the following code

		cout<<"Graph loading [master] took "<<(Settings::graphLoadingTime/1000)<<" sec and "<<(Settings::graphLoadingTime%1000)<<" ms"<<endl;

		cout<<"Mining took "<<(elapsed/1000)<<" sec and "<<(elapsed%1000)<<" ms"<<endl;

		cout<<"Finished!";

		// MPI::Finalize();
		MPI_Finalize();
		delete miner;
		delete exactMiner;

I am confused as to why it stops at print Finished!.