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	int MPI_Ibsend(void * buf, int count, MPI_Datatype datatype, int dest, int tga, MPI_Comm comm, MPI_Request * request) 　　非阻塞缓冲区发送 int MPI_Init(int * argc, char *** argv) 　　MPI执行环境初始化 Int MPI_Initialized(int * flag) 　　查询MPI_Init是否已经调用 int MPI_Intercomm_create(MPI_Comm local_comm, int local_leader, MPI_Comm peer_comm, int remote_leader, int tag, MPI_Comm * newintercomm) 　　根据两个组内通信域创建一个组间通信域 int MPI_Intercomm_merge(MPI_Comm intercomm, i nt high, MPI_Comm * newintracomm) 　　根据组间通信域创建一个组内通信域 int MPI_Iprobe(int source, int tag, MPI_Comm comm, int * flag, MPI_Status * status) 　　非阻塞消息到达与否的测试 int MPI_Irecv(void * buf, int count, MPI_Datatype datatype, int source, int tag, MPI_Comm comm, MPI_Request * request) 　　非阻塞接收 int MPI_Irsend(viud * buf, int count, MPI_Datatype datatype, int dest, int tag, MPI_Comm comm, MPI_Request * request) 　　非阻塞就绪发送 int MPI_Isend(void * buf, int count, MPI_Datatype datatype, int dest, int tag, MPI_Comm comm, MPI_Request * request) 　　非阻塞发送 int MPI_Issend(void * buf, int count, MPI_Datatype datatype, int dest, int tag, MPI_Comm comm, MPI_Request * request) 　　非阻塞同步发送