[This is preliminary documentation and is subject to change.]
The Operation class provides reduction operations for use with the
reduction collectives.
Namespace:
MPIAssembly: MPI (in MPI.dll)
Version: 0.9.0.0 (0.9.0.0)
Syntax
| C# |
|---|
public class Operation<T> : IDisposable |
| Visual Basic (Declaration) |
|---|
Public Class Operation(Of T) _ Implements IDisposable |
| Visual C++ |
|---|
generic<typename T> public ref class Operation : IDisposable |
Type Parameters
- T
- The type of data used in these operations.
Remarks
The Operation class is used with the reduction collective communication operations, such as
Allreduce<(Of <(T>)>)(T, ReductionOperation<(Of <(T>)>)). For example,
the Add property is a delegate that adds two values of type
T, while Min returns the minimum of the
two values. The reduction operations provided by this class should be
preferred to hand-written reduction operations (particularly for built-in types)
because it enables additional optimizations in the MPI library.
The Operation class also has a second role for users that require access to the low-level MPI interface. Creating an instance of the Operation class will find or create an appropriate MPI_Op for that reduction operation. This MPI_Op, accessible through the Op property, can be used with low-level MPI reduction operations directly.
