LIP_IOBUFMAP_GET_DATATYPE

LIP_IOBUFMAP_GET_DATATYPE(bufmap, datatype, memtype, filetype,flags)

IN	bufmap data buffer map (handle)
IN	datatype type of stored data
OUT	memtype new MPI data type (handle)
	that describes indices of data in memory
	(used in MPI_File_write_* and MPI_File_read_* functions)
OUT	filetype MPI_Datatype that describes indices of data on disc
	(used in MPI_File_set_view)
IN	flags flags describing MPI data type (integer)

C syntax:

int LIP_IOBufmap_get_datatype(LIP_IOBufmap bmap, MPI_Datatype datatype, MPI_Datatype *memtype, MPI_Datatype *filetype, int flags)

Java syntax:
Class IOBufmap:

public IndicesDatatypes get_datatype(mpi.Datatype datatype, int flags)

LIP_IOBUFMAP_GET_DATATYPE creates a new MPI data type which may be used in MPI-IO routines for reading or writing data.

The flags argument can combine the following constants:

• LIP_DATA_OLD - then the returned MPI data type will refer to the old data elements (which should be written out to disk),
• LIP_DATA_NEW - then the returned MPI data type will refer to the new data elements (which should be read in from disk).
• LIP_DATA_ALL-then the returned MPI data type will refer to all data elements in the memory buffer - useful when the user wants to write all the data after performing the last calculation.