Tpetra::Details::DistributorPlan Class Reference

#include <Tpetra_Details_DistributorPlan.hpp>

Inherits Teuchos::ParameterListAcceptorDefaultBase.

Public Member Functions
int	getTag (const int pathTag) const

Detailed Description

Instances of Distributor take the following parameters that control communication and debug output:

• "Barrier between receives and sends" (bool): Whether to execute a barrier between receives and sends in do[Reverse]Posts(). A barrier is required for correctness when the "Send type" parameter is "Rsend". Otherwise, a barrier is correct and may be useful for debugging, but not recommended, since it introduces useless synchronization.
• "Send type" (std::string): When using MPI, the variant of MPI_Send to use in do[Reverse]Posts(). Valid values include "Isend", "Rsend", "Send", and "Ssend". The default is "Send". (The receive type is always MPI_Irecv, a nonblocking receive. Since we post receives first before sends, this prevents deadlock, even if MPI_Send blocks and does not buffer.)

Definition at line 109 of file Tpetra_Details_DistributorPlan.hpp.

Member Function Documentation

getTag()

int Tpetra::Details::DistributorPlan::getTag

(

const int

pathTag

)

const

Get the tag to use for receives and sends.

See useDistinctTags_. This is called in doPosts() (both variants) and computeReceives().

Definition at line 126 of file Tpetra_Details_DistributorPlan.cpp.

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

• Tpetra_Details_DistributorPlan.hpp
• Tpetra_Details_DistributorPlan.cpp