MPI_Type_hindexed − Creates an indexed datatype with offsets in bytes -- use of this routine is deprecated.
#include
<mpi.h>
int MPI_Type_hindexed(int count, int
*array_of_blocklengths,
MPI_Aint *array_of_displacements, MPI_Datatype oldtype, | ||
MPI_Datatype *newtype) |
INCLUDE
’mpif.h’
MPI_TYPE_HINDEXED(COUNT, ARRAY_OF_BLOCKLENGTHS,
ARRAY_OF_DISPLACEMENTS, OLDTYPE, NEWTYPE, IERROR) |
||||
INTEGER |
COUNT, ARRAY_OF_BLOCKLENGTHS(*) | |||
INTEGER |
ARRAY_OF_DISPLACEMENTS(*), OLDTYPE, NEWTYPE | |||
INTEGER |
IERROR |
count |
Number of blocks -- also number of entries in array_of_displacements and array_of_blocklengths (integer). |
array_of_blocklengths
Number of elements in each block (array of nonnegative integers).
array_of_displacements
Byte displacement of each block (C: array of MPI_Aint, Fortran: array of integer).
oldtype |
Old datatype (handle). |
newtype |
New datatype (handle). |
|||
IERROR |
Fortran only: Error status (integer). |
Note that use of this routine is deprecated as of MPI-2. Use MPI_Type_create_hindexed instead.
This deprecated routine is not available in C++.
The function is identical to MPI_Type_indexed, except that block displacements in array_of_displacements are specified in bytes, rather than in multiples of the oldtype extent.
Assume that oldtype has type map
{(type(0), disp(0)), ..., (type(n-1), disp(n-1))},
with extent ex.
Let B be the array_of_blocklength argument and D be the
array_of_displacements argument. The newly created datatype
has
n x Sˆcount-1
(i=0) B[i] entries:
{(type(0),
disp(0) + D[0]),...,(type(n-1), disp(n-1) + D[0]),...,
(type(0), disp(0) + (D[0] + B[0]-1)* ex),...,
type(n-1), disp(n-1) + (D[0]+ B[0]-1)* ex),...,
(type(0), disp(0) + D[count-1]),...,(type(n-1), disp(n-1) +
D[count-1]),...,
(type(0), disp(0) + D[count-1] + (B[count-1] -1)* ex),...,
(type(n-1), disp(n-1) + D[count-1] + (B[count-1] -1)*
ex)}
Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ functions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism will be used to throw an MPI::Exception object.
Before the error value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job, except for I/O function errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.
MPI_Type_create_hindexed
MPI_Type_indexed