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Using Bcase and Reduce
hello_new_comm : In addition to hello, the data communicate with local communicator
Using MPI_Comm_group, MPI_Comm_create, MPI_Group_free
mat_mat : matrix to matrix
Using MPE_Log_event, MPE_Describe_state
mat_vec_step01 : matrix to vector multipication
monte_pi : calculate PI by monte caro method
Using MPI_Comm_group, MPI_comm_create, MPI_Group_free
comandrun_step01 : send variable and run on the remote node machine.
Simply multiply the vairalbe and return
comandrun_step02 : non-blocking version
Using MPI_Isend
comandrun_step03 : Open remote file, read multify factor and return resul