Field Detail

• baseType

  public int baseType

Constructor Detail

• Datatype

  public Datatype()

Method Detail

• getType

  public int getType()

• getByteSize

  public int getByteSize()

• Extent

  public int Extent()
             throws MPIException

  Returns the extent of a datatype - the difference between upper and lower bound.

  returns:

  datatype extent

  Java binding of the MPI operation MPI_TYPE_EXTENT.

  Throws:

  MPIException

• Size

  public int Size()
           throws MPIException

  Returns the total size of a datatype - the number of buffer elements it represents.

  returns:

  datatype size

  Java binding of the MPI operation MPI_TYPE_SIZE.

  Throws:

  MPIException

• Lb

  public int Lb()
         throws MPIException

  Find the lower bound of a datatype - the least value in its displacement sequence.

  returns:

  displacement of lower bound from origin

  Java binding of the MPI operation MPI_TYPE_LB.

  Throws:

  MPIException

• Ub

  public int Ub()
         throws MPIException

  Find the upper bound of a datatype - the greatest value in its displacement sequence.

  returns:

  displacement of upper bound from origin

  Java binding of the MPI operation MPI_TYPE_UB.

  Throws:

  MPIException

• Commit

  public void Commit()
              throws MPIException

  Commit a derived datatype. Java binding of the MPI operation MPI_TYPE_COMMIT.

  Throws:

  MPIException

• finalize

  public void finalize()
                throws MPIException

  Overrides:

  finalize in class java.lang.Object

  Throws:

  MPIException

• Contiguous

  public static Datatype Contiguous(int count,
                    Datatype oldtype)
                             throws MPIException

  Construct new datatype representing replication of old datatype into contiguous locations.

  count	replication count
  oldtype	old datatype
  returns:	new datatype

  Java binding of the MPI operation MPI_TYPE_CONTIGUOUS.

  The base type of the new datatype is the same as the base type of oldtype.

  Throws:

  MPIException

• Vector

  public static Datatype Vector(int count,
                int blocklength,
                int stride,
                Datatype oldtype)
                         throws MPIException

  Construct new datatype representing replication of old datatype into locations that consist of equally spaced blocks.

  count	number of blocks
  blocklength	number of elements in each block
  stride	number of elements between start of each block
  oldtype	old datatype
  returns:	new datatype

  Java binding of the MPI operation MPI_TYPE_VECTOR.

  The base type of the new datatype is the same as the base type of oldtype.

  Throws:

  MPIException

• Hvector

  public static Datatype Hvector(int count,
                 int blocklength,
                 int stride,
                 Datatype oldtype)
                          throws MPIException

  Identical to vector except that the stride is expressed directly in terms of the buffer index, rather than the units of the old type.

  count	number of blocks
  blocklength	number of elements in each block
  stride	number of elements between start of each block
  oldtype	old datatype
  returns:	new datatype

  Java binding of the MPI operation MPI_TYPE_HVECTOR.

  Unlike other language bindings, the value of stride is not measured in bytes.

  Throws:

  MPIException

• Indexed

  public static Datatype Indexed(int[] array_of_blocklengths,
                 int[] array_of_displacements,
                 Datatype oldtype)
                          throws MPIException

  Construct new datatype representing replication of old datatype into a sequence of blocks where each block can contain a different number of copies and have a different displacement.

  array_of_blocklengths	number of elements per block
  array_of_displacements	displacement of each block in units of old type
  oldtype	old datatype
  returns:	new datatype

  Java binding of the MPI operation MPI_TYPE_INDEXED.

  The number of blocks is taken to be size of the array_of_blocklengths argument. The second argument, array_of_displacements, should be the same size. The base type of the new datatype is the same as the base type of oldtype.

  Throws:

  MPIException

• Hindexed

  public static Datatype Hindexed(int[] array_of_blocklengths,
                  int[] array_of_displacements,
                  Datatype oldtype)
                           throws MPIException

  Identical to indexed except that the displacements are expressed directly in terms of the buffer index, rather than the units of the old type.

  array_of_blocklengths	number of elements per block
  array_of_displacements	displacement in buffer for each block
  oldtype	old datatype
  returns:	new datatype

  Java binding of the MPI operation MPI_TYPE_HINDEXED.

  Unlike other language bindings, the values in array_of_displacements are not measured in bytes.

  Throws:

  MPIException

• Struct

  public static Datatype Struct(int[] array_of_blocklengths,
                int[] array_of_displacements,
                Datatype[] array_of_types)
                         throws MPIException

  The most general type constructor.

  array_of_blocklengths	number of elements per block
  array_of_displacements	displacement in buffer for each block
  array_of_types	type of elements in each block
  returns:	new datatype

  Java binding of the MPI operation MPI_TYPE_STRUCT.

  The number of blocks is taken to be size of the array_of_blocklengths argument. The second and third arguments, array_of_displacements, and array_of_types, should be the same size. Unlike other language bindings, the values in array_of_displacements are not measured in bytes. All elements of array_of_types with definite base types must have the same base type: this will be the base type of new datatype.

  Throws:

  MPIException

• free

  public void free()