MPI_Send()和MPI_Recv()中可传送的数据类型模式如下：
MPI_CHARsigned char
MPI_SHORTsigned short int
MPI_INTsigned int
MPI_LONGsigned long int
MPI_UNSIGNED_CHARunsigned char
MPI_UNSIGNED_SHORTunsigned short int
MPI_UNSIGNEDunsigned int
MPI_UNSIGNED_LONGunsigned long int
MPI_FLOATfloat
MPI_DOUBLEdouble
MPI_LONG_DOUBLElong double
MPI_BYTE8 bits
MPI_PACKEDpacked sequence of bytes
