mpi4py.MPI.Op

class mpi4py.MPI.Op

Bases: object

Reduction operation.

static __new__(cls, op=None)

Parameters:

op (Op | None)

Return type:

Self

Methods Summary

Create(function[, commute])	Create a user-defined reduction operation.
Free()	Free a user-defined reduction operation.
Is_commutative()	Query reduction operations for their commutativity.
Reduce_local(inbuf, inoutbuf)	Apply a reduction operation to local data.
f2py(arg)
free()	Call Free if not null or predefined.
fromhandle(handle)	Create object from MPI handle.
fromint(arg, /)	Translate integer handle to object.
py2f()
toint()	Translate object to integer handle.

Attributes Summary

handle	MPI handle.
is_commutative	Is a commutative operation.
is_predefined	Is a predefined operation.

Methods Documentation

classmethod Create(function, commute=False)

Create a user-defined reduction operation.

Parameters:

• function (Callable[[Buffer, Buffer, Datatype], None])

• commute (bool)

Return type:

Self

Free()

Free a user-defined reduction operation.

Return type:

None

Is_commutative()

Query reduction operations for their commutativity.

Return type:

bool

Reduce_local(inbuf, inoutbuf)

Apply a reduction operation to local data.

Parameters:

• inbuf (BufSpec)

• inoutbuf (BufSpec)

Return type:

None

classmethod f2py(arg)

Parameters:

arg (int)

Return type:

Op

free()

Call Free if not null or predefined.

Return type:

None

classmethod fromhandle(handle)

Create object from MPI handle.

Parameters:

handle (int)

Return type:

Op

classmethod fromint(arg, /)

Translate integer handle to object.

Parameters:

arg (int)

Return type:

Op

py2f()

Return type:

int

toint()

Translate object to integer handle.

Return type:

int

Attributes Documentation

handle

MPI handle.

is_commutative

Is a commutative operation.

is_predefined

Is a predefined operation.