hmlp::tci::Comm Class Reference

#include <tci.hpp>

Public Member Functions
	Comm ()
	Comm (Context *context)
	Comm (Comm *parent, Context *context, int assigned_size, int assigned_rank)
Comm	Split (int num_groups)
bool	Master ()
void	Barrier ()
void	Send (void **sent_object)
void	Recv (void **recv_object)
template<typename Arg >
void	Bcast (Arg &buffer, int root)
template<int ALIGN_SIZE, typename T >
T *	AllocateSharedMemory (size_t count)
template<typename T >
void	FreeSharedMemory (T *ptr)
void	Create1DLocks (int n)
void	Destroy1DLocks ()
void	Create2DLocks (int m, int n)
void	Destroy2DLocks ()
void	Acquire1DLocks (int i)
void	Release1DLocks (int i)
void	Acquire2DLocks (int i, int j)
void	Release2DLocks (int i, int j)
int	GetCommSize ()
int	GetCommRank ()
int	GetGangSize ()
int	GetGangRank ()
int	BalanceOver1DGangs (int n, int default_size, int nb)
Range	DistributeOver1DThreads (int beg, int end, int nb)
Range	DistributeOver1DGangs (int beg, int end, int nb)
void	Print (int prefix)

Public Attributes
Comm *	parent = NULL

Detailed Description

end class Context

Constructor & Destructor Documentation

hmlp::tci::Comm::Comm

(

)

end Context::Barrier() (Default) within OpenMP parallel construct (all threads).

Assign all threads to the communicator.

Assign my rank (tid) in the communicator.

hmlp::tci::Comm::Comm

(

Context *

context

)

end Comm::Comm()

Assign the shared context.

hmlp::tci::Comm::Comm	(	Comm *	parent,
		Context *	context,
		int	assigned_size,
		int	assigned_rank
	)

end Comm::Comm()

Use the assigned size as my size.

Use the assigned rank as my rank.

Assign the shared context.

Assign the parent communicator pointer.

Member Function Documentation

Range hmlp::tci::Comm::DistributeOver1DGangs	(	int	beg,
		int	end,
		int	nb
	)

end Comm::DistributeOver1DThreads()

Select the proper partitioning policy.

Return the tuple accordingly.

Default is Round Robin.

Range hmlp::tci::Comm::DistributeOver1DThreads	(	int	beg,
		int	end,
		int	nb
	)

Select the proper partitioning policy.

Return the tuple accordingly.

Default is Round Robin.

bool hmlp::tci::Comm::Master

(

)

end Comm::Split()

Comm hmlp::tci::Comm::Split

(

int

num_splits

)

end Comm::Comm()

Early return if possible.

Prepare to create gang_size subcommunicators.

By default, we split threads evenly using "close" affinity. Threads with the same color will be in the same subcomm.

example: (num_splits=2)

rank 0 1 2 3 4 5 6 7 color 0 0 0 0 1 1 1 1 (gang_rank) first 0 0 0 0 4 4 4 4 last 4 4 4 4 8 8 8 8 child_rank 0 1 2 3 0 1 2 3 4 4 4 4 4 4 4 4 (child_size)

Use color to be the gang_rank.

Create new contexts.

Master bcast its buffer.

The master of each gang will allocate the new context.

Create and return the subcommunicator.

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The documentation for this class was generated from the following files:

• /home/chenhany/Projects/hmlp/frame/base/tci.hpp
• /home/chenhany/Projects/hmlp/frame/base/tci.cpp