Arcane::ParallelMngUtils Namespace Reference

Utility functions associated with IParallelMng. More...

Functions
Ref< IGetVariablesValuesParallelOperation >	createGetVariablesValuesOperationRef (IParallelMng *pm)
	Returns an operation to retrieve the values of a variable on the entities of another subdomain.
Ref< ITransferValuesParallelOperation >	createTransferValuesOperationRef (IParallelMng *pm)
	Returns an operation to transfer values between ranks.
Ref< IParallelExchanger >	createExchangerRef (IParallelMng *pm)
	Returns an interface to transfer messages between ranks.
Ref< IVariableSynchronizer >	createSynchronizerRef (IParallelMng *pm, IItemFamily *family)
	Returns an interface to synchronize variables on the group of the family family.
Ref< IVariableSynchronizer >	createSynchronizerRef (IParallelMng *pm, const ItemGroup &group)
	Returns an interface to synchronize variables on the group group.
Ref< IParallelTopology >	createTopologyRef (IParallelMng *pm)
	Creates an instance containing information about the rank topology of this manager.
Ref< IParallelMng >	createSubParallelMngRef (IParallelMng *pm, Int32 color, Int32 key)
	Creates a new parallelism manager for a subset of ranks.
bool	isMachineShMemWinAvailable (IParallelMng *pm)
	Function to determine if shared memory window mode is supported and if its use is possible.
Ref< ISerializeMessage >	createSendSerializeMessageRef (IParallelMng *pm, Int32 rank)
	Creates a non-blocking serialization message for sending to rank rank.
Ref< ISerializeMessage >	createReceiveSerializeMessageRef (IParallelMng *pm, Int32 rank)
	Creates a non-blocking serialization message for receiving from rank rank.

Detailed Description

Utility functions associated with IParallelMng.

Function Documentation

createExchangerRef()

Ref< IParallelExchanger > Arcane::ParallelMngUtils::createExchangerRef

(

IParallelMng *

pm

)

Returns an interface to transfer messages between ranks.

Definition at line 136 of file ParallelMngUtils.cc.

Referenced by Arcane::Parallel::VariableParallelOperationBase::applyOperation().

createGetVariablesValuesOperationRef()

Ref< IGetVariablesValuesParallelOperation > Arcane::ParallelMngUtils::createGetVariablesValuesOperationRef

(

IParallelMng *

pm

)

Returns an operation to retrieve the values of a variable on the entities of another subdomain.

Definition at line 124 of file ParallelMngUtils.cc.

createReceiveSerializeMessageRef()

Ref< ISerializeMessage > Arcane::ParallelMngUtils::createReceiveSerializeMessageRef	(	IParallelMng *	pm,
		Int32	rank )

Creates a non-blocking serialization message for receiving from rank rank.

The message is processed only when IParallelMng::processMessages() is called.

createSendSerializeMessageRef()

Ref< ISerializeMessage > Arcane::ParallelMngUtils::createSendSerializeMessageRef	(	IParallelMng *	pm,
		Int32	rank )

Creates a non-blocking serialization message for sending to rank rank.

The message is processed only when IParallelMng::processMessages() is called.

createSubParallelMngRef()

Ref< IParallelMng > Arcane::ParallelMngUtils::createSubParallelMngRef	(	IParallelMng *	pm,
		Int32	color,
		Int32	key )

Creates a new parallelism manager for a subset of ranks.

This operation is collective and is equivalent to MPI_Comm_split.

Ranks whose color has the same value will be in the same communicator. key allows ordering the ranks in the created sub-communicator. If it equals pm->commRank(), then the ranks in the sub-communicator will have the same order as in pm.

• If color is negative, then the current rank will not be associated with any communicator and the returned value will be null.

Definition at line 160 of file ParallelMngUtils.cc.

createSynchronizerRef() [1/2]

Ref< IVariableSynchronizer > Arcane::ParallelMngUtils::createSynchronizerRef	(	IParallelMng *	pm,
		const ItemGroup &	group )

Returns an interface to synchronize variables on the group group.

Definition at line 148 of file ParallelMngUtils.cc.

createSynchronizerRef() [2/2]

Ref< IVariableSynchronizer > Arcane::ParallelMngUtils::createSynchronizerRef	(	IParallelMng *	pm,
		IItemFamily *	family )

Returns an interface to synchronize variables on the group of the family family.

Definition at line 142 of file ParallelMngUtils.cc.

Referenced by Arcane::ItemGroupImpl::synchronizer().

createTopologyRef()

Ref< IParallelTopology > Arcane::ParallelMngUtils::createTopologyRef

(

IParallelMng *

pm

)

Creates an instance containing information about the rank topology of this manager.

This operation is collective.

Definition at line 154 of file ParallelMngUtils.cc.

createTransferValuesOperationRef()

Ref< ITransferValuesParallelOperation > Arcane::ParallelMngUtils::createTransferValuesOperationRef

(

IParallelMng *

pm

)

Returns an operation to transfer values between ranks.

Definition at line 130 of file ParallelMngUtils.cc.

isMachineShMemWinAvailable()

bool Arcane::ParallelMngUtils::isMachineShMemWinAvailable

(

IParallelMng *

pm

)

Function to determine if shared memory window mode is supported and if its use is possible.

Collective call.

This function can be useful for using the classes:

• MachineShMemWin(Base)
• ContigMachineShMemWin(Base)
• MachineShMemWinVariable...

Returns

true if the classes above can be used.

Definition at line 165 of file ParallelMngUtils.cc.

References Arcane::IParallelMng::_internalApi(), and ARCANE_CHECK_POINTER.