Operations¶

Located in file: MEL.hpp

template <typename T>

T MEL::Functor::MAX(T &a, T &b)¶

Binary Max Functor.

Return

Returns the max of the two inputs

Parameters

• a -

  The left argument

• b -

  The right argument

template <typename T>

T MEL::Functor::MIN(T &a, T &b)¶

Binary Min Functor.

Return

Returns the min of the two inputs

Parameters

• a -

  The left argument

• b -

  The right argument

template <typename T>

T MEL::Functor::SUM(T &a, T &b)¶

Binary Sum Functor.

Return

Returns the sum of the two inputs

Parameters

• a -

  The left argument

• b -

  The right argument

template <typename T>

T MEL::Functor::PROD(T &a, T &b)¶

Binary Product Functor.

Return

Returns the product of the two inputs

Parameters

• a -

  The left argument

• b -

  The right argument

template <typename T>

T MEL::Functor::LAND(T &a, T &b)¶

Binary Logical And Functor.

Return

Returns the logical and of the two inputs

Parameters

• a -

  The left argument

• b -

  The right argument

template <typename T>

T MEL::Functor::BAND(T &a, T &b)¶

Binary bitwise and Functor.

Return

Returns the bitwise and of the two inputs

Parameters

• a -

  The left argument

• b -

  The right argument

template <typename T>

T MEL::Functor::LOR(T &a, T &b)¶

Binary logical or Functor.

Return

Returns the logical or of the two inputs

Parameters

• a -

  The left argument

• b -

  The right argument

template <typename T>

T MEL::Functor::BOR(T &a, T &b)¶

Binary bitwise or Functor.

Return

Returns the bitwise or of the two inputs

Parameters

• a -

  The left argument

• b -

  The right argument

template <typename T>

T MEL::Functor::LXOR(T &a, T &b)¶

Binary logical exclusive or Functor.

Return

Returns the logical exclusive or of the two inputs

Parameters

• a -

  The left argument

• b -

  The right argument

template <typename T>

T MEL::Functor::BXOR(T &a, T &b)¶

Binary bitwise exclusive or Functor.

Return

Returns the bitwise exclusive or of the two inputs

Parameters

• a -

  The left argument

• b -

  The right argument

template <typename T, T(*)(T &, T &) F>

void MEL::Functor::ARRAY_OP_FUNC(T *in, T *inout, int *len, MPI_Datatype *dptr)¶

Maps the given binary functor to the local array of a reduction / accumulate operation.

Parameters

• in -

  The left hand array for the reduction

• inout -

  The right hand array for the reduction. This array is modified to reflect the result of the functor on each element

• len -

  Pointer to a single int representing the number of elements to be processed

• dptr -

  Pointer to a single derived datatype representing the data to be processed

template <typename T, T(*)(T &, T &) F>

Op MEL::OpCreate(bool commute = true)¶

Create a derived operation for reduction type functions.

See

MPI_Op_create

Return

Returns a handle to a new Op

Parameters

• commute -

  Is the operation commutative?

void MEL::OpFree(Op &op)¶

Free a derived operation.

See

MPI_Op_free

Parameters

• op -

  The op to free

void MEL::OpFree(std::vector<Op> &ops)¶

Free a std::vector of derived operations.

Parameters

• ops -

  A std::vector of ops to be freed

template <typename T0, typename T1, typename... Args>

void MEL::OpFree(T0 &d0, T1 &d1, Args&&... args)¶

Free a varadic set of derived operations.

Parameters

• d0 -

  The first op to free

• d1 -

  The second op to free

• args -

  The remaining ops to free