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Teuchos::MpiComm< Ordinal > Class Template Reference

Implementation of Comm that uses MPI for communication. More...

#include <Teuchos_DefaultMpiComm.hpp>

Inheritance diagram for Teuchos::MpiComm< Ordinal >:
Inheritance graph
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List of all members.

Public Member Functions

int getTag () const
 The current tag.

Static Public Attributes

static int const minTag_ = 26000
static int const maxTag_ = 26099

Private Member Functions

void setupMembersFromComm ()
 Set internal data members once the rawMpiComm_ data member is valid.
void assertRank (const int rank, const std::string &rankName) const
 MpiComm ()

Private Attributes

RCP< const OpaqueWrapper
< MPI_Comm > > 
rawMpiComm_
 The "raw" MPI_Comm (communicator).
int rank_
 The rank of the calling process.
int size_
 The number of processes in the communicator.
int tag_
 The current tag, to use for all MPI functions that need it.
RCP< const OpaqueWrapper
< MPI_Errhandler > > 
customErrorHandler_
 MPI error handler. If null, MPI uses the default error handler.

Static Private Attributes

static int tagCounter_ = MpiComm<Ordinal>::minTag_

Related Functions

(Note that these are not member functions.)

template<typename Ordinal >
RCP< MpiComm< Ordinal > > createMpiComm (const RCP< const OpaqueWrapper< MPI_Comm > > &rawMpiComm)
 Helper function that creates a dynamically allocated MpiComm object or returns Teuchos::null to correctly represent a null communicator.

Constructors

 MpiComm (MPI_Comm rawMpiComm)
 Construct an MpiComm with an MPI_Comm.
 MpiComm (const RCP< const OpaqueWrapper< MPI_Comm > > &rawMpiComm)
 Construct an MpiComm with the given wrapped MPI_Comm.
 MpiComm (const MpiComm< Ordinal > &other)
 Construct a communicator with a new context with the same properties as the original.
RCP< const OpaqueWrapper
< MPI_Comm > > 
getRawMpiComm () const
 Return the embedded wrapped opaque MPI_Comm object.
void setErrorHandler (const RCP< const OpaqueWrapper< MPI_Errhandler > > &errHandler)
 Set the MPI error handler for this communicator.
 MpiComm (const RCP< const OpaqueWrapper< MPI_Comm > > &rawMpiComm, const int defaultTag)
 Construct an MpiComm with a wrapped MPI_Comm and a default tag.

Implementation of Comm interface

virtual int getRank () const
 
virtual int getSize () const
 
virtual void barrier () const
 
virtual void broadcast (const int rootRank, const Ordinal bytes, char buffer[]) const
 
virtual void gather (const Ordinal sendBytes, const char sendBuffer[], const Ordinal recvBytes, char recvBuffer[], const int root) const
 Gather values from all processes to the root process.
virtual void gatherAll (const Ordinal sendBytes, const char sendBuffer[], const Ordinal recvBytes, char recvBuffer[]) const
 
virtual void reduceAll (const ValueTypeReductionOp< Ordinal, char > &reductOp, const Ordinal bytes, const char sendBuffer[], char globalReducts[]) const
 
virtual void reduceAllAndScatter (const ValueTypeReductionOp< Ordinal, char > &reductOp, const Ordinal sendBytes, const char sendBuffer[], const Ordinal recvCounts[], char myGlobalReducts[]) const
 
virtual void scan (const ValueTypeReductionOp< Ordinal, char > &reductOp, const Ordinal bytes, const char sendBuffer[], char scanReducts[]) const
 
virtual void send (const Ordinal bytes, const char sendBuffer[], const int destRank) const
 
virtual void send (const Ordinal bytes, const char sendBuffer[], const int destRank, const int tag) const
 
virtual void ssend (const Ordinal bytes, const char sendBuffer[], const int destRank) const
 
virtual void ssend (const Ordinal bytes, const char sendBuffer[], const int destRank, const int tag) const
 Variant of ssend() that takes a message tag.
virtual int receive (const int sourceRank, const Ordinal bytes, char recvBuffer[]) const
 
virtual void readySend (const ArrayView< const char > &sendBuffer, const int destRank) const
 
virtual void readySend (const Ordinal bytes, const char sendBuffer[], const int destRank, const int tag) const
 Variant of readySend() that accepts a message tag.
virtual RCP< CommRequest
< Ordinal > > 
isend (const ArrayView< const char > &sendBuffer, const int destRank) const
 
virtual RCP< CommRequest
< Ordinal > > 
isend (const ArrayView< const char > &sendBuffer, const int destRank, const int tag) const
 Variant of isend() that takes a tag.
virtual RCP< CommRequest
< Ordinal > > 
ireceive (const ArrayView< char > &Buffer, const int sourceRank) const
 
virtual RCP< CommRequest
< Ordinal > > 
ireceive (const ArrayView< char > &Buffer, const int sourceRank, const int tag) const
 
virtual void waitAll (const ArrayView< RCP< CommRequest< Ordinal > > > &requests) const
 
virtual void waitAll (const ArrayView< RCP< CommRequest< Ordinal > > > &requests, const ArrayView< RCP< CommStatus< Ordinal > > > &statuses) const
 
virtual RCP< CommStatus
< Ordinal > > 
wait (const Ptr< RCP< CommRequest< Ordinal > > > &request) const
 
virtual RCP< Comm< Ordinal > > duplicate () const
 
virtual RCP< Comm< Ordinal > > split (const int color, const int key) const
 
virtual RCP< Comm< Ordinal > > createSubcommunicator (const ArrayView< const int > &ranks) const
 

Implementation of Describable interface

std::string description () const
 

Detailed Description

template<typename Ordinal>
class Teuchos::MpiComm< Ordinal >

Implementation of Comm that uses MPI for communication.

Template Parameters:
OrdinalThe index type for communication; same as the template parameter of Comm.

This class uses MPI (the Message Passing Interface) to implement the Comm interface. It includes constructors that take an MPI_Comm from the application.

Assertions:

Definition at line 373 of file Teuchos_DefaultMpiComm.hpp.


Constructor & Destructor Documentation

template<typename Ordinal >
Teuchos::MpiComm< Ordinal >::MpiComm ( MPI_Comm  rawMpiComm) [explicit]

Construct an MpiComm with an MPI_Comm.

This constructs an MpiComm that uses the given "raw" MPI communicator underneath. The MPI_Comm must be valid for the lifetime of this MpiComm. You are responsible for freeing the MPI_Comm (using MPI_Comm_free) if necessary.

This constructor should be used only in one of two cases: 1. When the given MPI_Comm is one of the predefined communicators that need not and must not be freed after use, like MPI_COMM_WORLD or MPI_COMM_SELF. 2. When you know that the given MPI_Comm will not be freed until after the lifetime of this MpiComm.

If you cannot be sure of either of these two conditions, you should use the version of the constructor that takes an RCP<const OpaqueWrapper<MPI_Comm> >.

Precondition:

  • rawMpiComm != MPI_COMM_NULL

Definition at line 804 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
Teuchos::MpiComm< Ordinal >::MpiComm ( const RCP< const OpaqueWrapper< MPI_Comm > > &  rawMpiComm)

Construct an MpiComm with the given wrapped MPI_Comm.

This constructs an MpiComm that uses the given "raw" MPI communicator underneath. This version of the constructor accepts the MPI_Comm wrapped in an OpaqueWrapper, which along with the RCP has the option to free the MPI_Comm (via MPI_Comm_free) after use if necessary. You are responsible when creating the OpaqueWrapper for supplying a "free" function if needed. We recommend using details::safeCommFree for the "free" function, if one is needed.

Preconditions:

  • rawMpiComm.get() != NULL
  • *rawMpiComm != MPI_COMM_NULL

Definition at line 749 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
Teuchos::MpiComm< Ordinal >::MpiComm ( const RCP< const OpaqueWrapper< MPI_Comm > > &  rawMpiComm,
const int  defaultTag 
) [private]

Construct an MpiComm with a wrapped MPI_Comm and a default tag.

This constructor has the same meaning as the one-argument constructor that takes RCP<const OpaqueWrapper<MPI_Comm> >, except that it sets the default message tag on all processes to defaultTag. This avoids the MPI_Bcast that the other two constructors do.

This constructor is declared private for now, because it is an implementation detail of duplicate(). We may choose to expose it in the future.

Preconditions:

  • rawMpiComm.get() != NULL
  • *rawMpiComm != MPI_COMM_NULL
  • defaultTag is the same on all processes in the given communicator

Definition at line 778 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
Teuchos::MpiComm< Ordinal >::MpiComm ( const MpiComm< Ordinal > &  other)

Construct a communicator with a new context with the same properties as the original.

The newly constructed communicator will have a duplicate communication space that has the same properties (e.g. processes, attributes, topologies) as the input communicator.

Parameters:
otherThe communicator to copy from.

Preconditions:

Definition at line 831 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal>
Teuchos::MpiComm< Ordinal >::MpiComm ( ) [private]

Member Function Documentation

template<typename Ordinal>
RCP<const OpaqueWrapper<MPI_Comm> > Teuchos::MpiComm< Ordinal >::getRawMpiComm ( ) const [inline]

Return the embedded wrapped opaque MPI_Comm object.

Definition at line 461 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::setErrorHandler ( const RCP< const OpaqueWrapper< MPI_Errhandler > > &  errHandler)

Set the MPI error handler for this communicator.

Parameters:
errHandler[in] The error handler to set. If null, do nothing.

MPI lets you set an error handler function specific to each communicator. (See Section 8.3 of the MPI 3.0 Standard.) MpiComm wraps this functionality using this method. You must first either create an error handler using MPI_Comm_create_errhandler() (or MPI_Errhandler_create() if you are stuck with an MPI 1 implementation), or use one of the default error handlers that the MPI standard or your MPI implementation provides. You will need to wrap the MPI error handler in an OpaqueWrapper. (See the documentation of OpaqueWrapper for the rationale behind not using MPI's opaque objects directly.)

MpiComm will not attempt to call MPI_Errhandler_free() on the error handler you provide. You are responsible for arranging that this be done. Note that MPI_Comm_create_errhandler() (which creates an error handler, given a function pointer) does not attach the error handler to an MPI_Comm, so the lifetime of the error handler is not tied to the MPI_Comm to which it is assigned. An error handler can be assigned to more than one MPI_Comm, in fact. You just need to guarantee that if you create a custom error handler, then that handler gets freed at some point. "The call to MPI_FINALIZE does not free objects created by MPI calls; these objects are freed using MPI_xxx_FREE calls" (Section 8.7, MPI 3.0 Standard). Note that it is legitimate to call MPI_Errhandler_free() right after setting the MPI_Comm's error handler; see Section 8.3.4 of the MPI 3.0 Standard ("The error handler [given to MPI_Errhandler_free] will be deallocated after all the objects associated with it (communicator, window, or file) have been deallocated"). You might instead attach your error handler as a attribute to MPI_COMM_SELF, in such a way that MPI_Errhandler_free() will be called when MPI_COMM_SELF is freed (which MPI_Finalize() does automatically). We do not take responsibility for doing any of these things; you are responsible for freeing the error handler.

Here is an example showing how to change an MpiComm's error handler. The default error handler for any MPI_Comm is MPI_ERRORS_ARE_FATAL. This handler immediately aborts if MPI encounters an error, without returning an error code from the MPI function. Suppose that instead you would like MPI functions to return an error code if MPI should encounter an error. (In that case, Teuchos' MPI wrappers will detect the returned error code and throw an exception with an appropriate error message. If MPI aborts immediately on error, Teuchos won't have the chance to detect and report the error.) If so, you may set the error handler to MPI_ERRORS_RETURN, one of MPI's built-in error handlers. Here is how you may do this for an MpiComm:

 // Suppose that you've already created this MpiComm.
 RCP<const MpiComm<int> > comm = ...;

 // Wrap the error handler.
 RCP<const OpaqueWrapper<MPI_Errhandler> > errHandler =
   rcp (new OpaqueWrapper<MPI_Errhandler> (MPI_ERRORS_RETURN));
 // Set the MpiComm's error handler.
 comm->setErrorHandler (errHandler);

Definition at line 899 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
int Teuchos::MpiComm< Ordinal >::getRank ( ) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 917 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
int Teuchos::MpiComm< Ordinal >::getSize ( ) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 924 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::barrier ( ) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 931 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::broadcast ( const int  rootRank,
const Ordinal  bytes,
char  buffer[] 
) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 944 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::gather ( const Ordinal  sendBytes,
const char  sendBuffer[],
const Ordinal  recvBytes,
char  recvBuffer[],
const int  root 
) const [virtual]

Gather values from all processes to the root process.

Implements Teuchos::Comm< Ordinal >.

Definition at line 982 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::gatherAll ( const Ordinal  sendBytes,
const char  sendBuffer[],
const Ordinal  recvBytes,
char  recvBuffer[] 
) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 959 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::reduceAll ( const ValueTypeReductionOp< Ordinal, char > &  reductOp,
const Ordinal  bytes,
const char  sendBuffer[],
char  globalReducts[] 
) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1005 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::reduceAllAndScatter ( const ValueTypeReductionOp< Ordinal, char > &  reductOp,
const Ordinal  sendBytes,
const char  sendBuffer[],
const Ordinal  recvCounts[],
char  myGlobalReducts[] 
) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1034 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::scan ( const ValueTypeReductionOp< Ordinal, char > &  reductOp,
const Ordinal  bytes,
const char  sendBuffer[],
char  scanReducts[] 
) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1103 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::send ( const Ordinal  bytes,
const char  sendBuffer[],
const int  destRank 
) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1122 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::send ( const Ordinal  bytes,
const char  sendBuffer[],
const int  destRank,
const int  tag 
) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1147 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::ssend ( const Ordinal  bytes,
const char  sendBuffer[],
const int  destRank 
) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1163 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::ssend ( const Ordinal  bytes,
const char  sendBuffer[],
const int  destRank,
const int  tag 
) const [virtual]

Variant of ssend() that takes a message tag.

Implements Teuchos::Comm< Ordinal >.

Definition at line 1187 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
int Teuchos::MpiComm< Ordinal >::receive ( const int  sourceRank,
const Ordinal  bytes,
char  recvBuffer[] 
) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1246 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::readySend ( const ArrayView< const char > &  sendBuffer,
const int  destRank 
) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1202 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::readySend ( const Ordinal  bytes,
const char  sendBuffer[],
const int  destRank,
const int  tag 
) const [virtual]

Variant of readySend() that accepts a message tag.

Implements Teuchos::Comm< Ordinal >.

Definition at line 1229 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
RCP< CommRequest< Ordinal > > Teuchos::MpiComm< Ordinal >::isend ( const ArrayView< const char > &  sendBuffer,
const int  destRank 
) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1278 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
RCP< CommRequest< Ordinal > > Teuchos::MpiComm< Ordinal >::isend ( const ArrayView< const char > &  sendBuffer,
const int  destRank,
const int  tag 
) const [virtual]

Variant of isend() that takes a tag.

Implements Teuchos::Comm< Ordinal >.

Definition at line 1300 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
RCP< CommRequest< Ordinal > > Teuchos::MpiComm< Ordinal >::ireceive ( const ArrayView< char > &  Buffer,
const int  sourceRank 
) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1322 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
RCP< CommRequest< Ordinal > > Teuchos::MpiComm< Ordinal >::ireceive ( const ArrayView< char > &  Buffer,
const int  sourceRank,
const int  tag 
) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1345 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::waitAll ( const ArrayView< RCP< CommRequest< Ordinal > > > &  requests) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1587 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::waitAll ( const ArrayView< RCP< CommRequest< Ordinal > > > &  requests,
const ArrayView< RCP< CommStatus< Ordinal > > > &  statuses 
) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1599 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
RCP< CommStatus< Ordinal > > Teuchos::MpiComm< Ordinal >::wait ( const Ptr< RCP< CommRequest< Ordinal > > > &  request) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1623 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
RCP< Comm< Ordinal > > Teuchos::MpiComm< Ordinal >::duplicate ( ) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1641 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
RCP< Comm< Ordinal > > Teuchos::MpiComm< Ordinal >::split ( const int  color,
const int  key 
) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1666 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
RCP< Comm< Ordinal > > Teuchos::MpiComm< Ordinal >::createSubcommunicator ( const ArrayView< const int > &  ranks) const [virtual]

Implements Teuchos::Comm< Ordinal >.

Definition at line 1696 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
std::string Teuchos::MpiComm< Ordinal >::description ( ) const [virtual]

Reimplemented from Teuchos::Describable.

Definition at line 1768 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal>
int Teuchos::MpiComm< Ordinal >::getTag ( ) const [inline, virtual]

The current tag.

Warning:
This method is ONLY for use by Teuchos developers. Users should not depend on the interface of this method. It may change or disappear at any time without warning.

Implements Teuchos::Comm< Ordinal >.

Definition at line 663 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::setupMembersFromComm ( ) [private]

Set internal data members once the rawMpiComm_ data member is valid.

This method should only be called from MpiComm's constructor.

Definition at line 867 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal >
void Teuchos::MpiComm< Ordinal >::assertRank ( const int  rank,
const std::string &  rankName 
) const [private]

Definition at line 1792 of file Teuchos_DefaultMpiComm.hpp.


Friends And Related Function Documentation

template<typename Ordinal >
RCP< MpiComm< Ordinal > > createMpiComm ( const RCP< const OpaqueWrapper< MPI_Comm > > &  rawMpiComm) [related]

Helper function that creates a dynamically allocated MpiComm object or returns Teuchos::null to correctly represent a null communicator.

Postconditions: [rawMpiComm.get()!=NULL && *rawMpiComm!=MPI_COMM_NULL] return.get()!=NULL [rawMpiComm.get()==NULL || *rawMpiComm==MPI_COMM_NULL] return.get()==NULL


Member Data Documentation

template<typename Ordinal>
int const Teuchos::MpiComm< Ordinal >::minTag_ = 26000 [static]

Definition at line 655 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal>
int const Teuchos::MpiComm< Ordinal >::maxTag_ = 26099 [static]

Definition at line 656 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal>
int Teuchos::MpiComm< Ordinal >::tagCounter_ = MpiComm<Ordinal>::minTag_ [static, private]

Definition at line 671 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal>
RCP<const OpaqueWrapper<MPI_Comm> > Teuchos::MpiComm< Ordinal >::rawMpiComm_ [private]

The "raw" MPI_Comm (communicator).

We wrap the MPI_Comm so that it is freed automatically when its reference count goes to zero, if it does need to be freed after use by calling MPI_Comm_free. (Predefined MPI_Comm, which include but are not limited to MPI_COMM_WORLD and MPI_COMM_SELF, need not and must not be freed after use.)

Definition at line 680 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal>
int Teuchos::MpiComm< Ordinal >::rank_ [private]

The rank of the calling process.

Definition at line 683 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal>
int Teuchos::MpiComm< Ordinal >::size_ [private]

The number of processes in the communicator.

Definition at line 686 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal>
int Teuchos::MpiComm< Ordinal >::tag_ [private]

The current tag, to use for all MPI functions that need it.

Each MpiComm instance always uses the same tag. Different MpiComm instances use different tags. The tag is set in MpiComm's constructor. Please refer to Bug 5740 for further discussion.

Definition at line 695 of file Teuchos_DefaultMpiComm.hpp.

template<typename Ordinal>
RCP<const OpaqueWrapper<MPI_Errhandler> > Teuchos::MpiComm< Ordinal >::customErrorHandler_ [private]

MPI error handler. If null, MPI uses the default error handler.

Definition at line 698 of file Teuchos_DefaultMpiComm.hpp.


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