java.lang.Object
- mpi.MPI

public final class MPI
extends java.lang.Object

MPI environment.

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`ANY_SOURCE`
`static int`	`ANY_TAG`
`static int`	`APPNUM`
`static Op`	`BAND`
`static Datatype`	`BOOLEAN`
`static Op`	`BOR`
`static int`	`BSEND_OVERHEAD`
`static Op`	`BXOR`
`static Datatype`	`BYTE`
`static int`	`CART`
`static Datatype`	`CHAR`
`static Intracomm`	`COMM_SELF`
`static Intracomm`	`COMM_WORLD`
`static int`	`CONGRUENT`
`static Datatype`	`DATATYPE_NULL`
`static int`	`DISPLACEMENT_CURRENT`
`static int`	`DIST_GRAPH`
`static int`	`DISTRIBUTE_BLOCK`
`static int`	`DISTRIBUTE_CYCLIC`
`static int`	`DISTRIBUTE_DFLT_DARG`
`static int`	`DISTRIBUTE_NONE`
`static Datatype`	`DOUBLE`
`static Datatype`	`DOUBLE_COMPLEX`
`static Datatype`	`DOUBLE_INT`	Struct which must be used with `doubleInt`.
`static DoubleInt`	`doubleInt`	Struct object for `DOUBLE_INT` datatype.
`static int`	`ERR_ACCESS`
`static int`	`ERR_AMODE`
`static int`	`ERR_ARG`
`static int`	`ERR_ASSERT`
`static int`	`ERR_BAD_FILE`
`static int`	`ERR_BASE`
`static int`	`ERR_BUFFER`
`static int`	`ERR_COMM`
`static int`	`ERR_CONVERSION`
`static int`	`ERR_COUNT`
`static int`	`ERR_DIMS`
`static int`	`ERR_DISP`
`static int`	`ERR_DUP_DATAREP`
`static int`	`ERR_FILE`
`static int`	`ERR_FILE_EXISTS`
`static int`	`ERR_FILE_IN_USE`
`static int`	`ERR_GROUP`
`static int`	`ERR_IN_STATUS`
`static int`	`ERR_INFO`
`static int`	`ERR_INFO_KEY`
`static int`	`ERR_INFO_NOKEY`
`static int`	`ERR_INFO_VALUE`
`static int`	`ERR_INTERN`
`static int`	`ERR_IO`
`static int`	`ERR_KEYVAL`
`static int`	`ERR_LASTCODE`
`static int`	`ERR_LOCKTYPE`
`static int`	`ERR_NAME`
`static int`	`ERR_NO_MEM`
`static int`	`ERR_NO_SPACE`
`static int`	`ERR_NO_SUCH_FILE`
`static int`	`ERR_NOT_SAME`
`static int`	`ERR_OP`
`static int`	`ERR_OTHER`
`static int`	`ERR_PENDING`
`static int`	`ERR_PORT`
`static int`	`ERR_QUOTA`
`static int`	`ERR_RANK`
`static int`	`ERR_READ_ONLY`
`static int`	`ERR_REQUEST`
`static int`	`ERR_RMA_CONFLICT`
`static int`	`ERR_RMA_SYNC`
`static int`	`ERR_ROOT`
`static int`	`ERR_SERVICE`
`static int`	`ERR_SIZE`
`static int`	`ERR_SPAWN`
`static int`	`ERR_SYSRESOURCE`
`static int`	`ERR_TAG`
`static int`	`ERR_TOPOLOGY`
`static int`	`ERR_TRUNCATE`
`static int`	`ERR_TYPE`
`static int`	`ERR_UNKNOWN`
`static int`	`ERR_UNSUPPORTED_DATAREP`
`static int`	`ERR_UNSUPPORTED_OPERATION`
`static int`	`ERR_WIN`
`static Errhandler`	`ERRORS_ARE_FATAL`
`static Errhandler`	`ERRORS_RETURN`
`static Datatype`	`FLOAT`
`static Datatype`	`FLOAT_COMPLEX`
`static Datatype`	`FLOAT_INT`	Struct which must be used with `floatInt`.
`static FloatInt`	`floatInt`	Struct object for `FLOAT_INT` datatype.
`static int`	`GRAPH`
`static Group`	`GROUP_EMPTY`
`static int`	`HOST`
`static int`	`IDENT`
`static Info`	`INFO_ENV`
`static Info`	`INFO_NULL`
`static Datatype`	`INT`
`static Int2`	`int2`	Struct object for `INT2` datatype.
`static Datatype`	`INT2`	Struct which must be used with `int2`.
`static int`	`IO`
`static int`	`KEYVAL_INVALID`
`static Op`	`LAND`
`static int`	`LASTUSEDCODE`
`static int`	`LOCK_EXCLUSIVE`
`static int`	`LOCK_SHARED`
`static Datatype`	`LONG`
`static Datatype`	`LONG_INT`	Struct which must be used with `longInt`.
`static LongInt`	`longInt`	Struct object for `LONG_INT` datatype.
`static Op`	`LOR`
`static Op`	`LXOR`
`static Op`	`MAX`
`static int`	`MAX_DATAREP_STRING`
`static int`	`MAX_INFO_KEY`
`static int`	`MAX_INFO_VAL`
`static int`	`MAX_OBJECT_NAME`
`static int`	`MAX_PORT_NAME`
`static Op`	`MAXLOC`	Global maximum operator.
`static Op`	`MIN`
`static Op`	`MINLOC`	Global minimum operator.
`static int`	`MODE_APPEND`
`static int`	`MODE_CREATE`
`static int`	`MODE_DELETE_ON_CLOSE`
`static int`	`MODE_EXCL`
`static int`	`MODE_NOCHECK`
`static int`	`MODE_NOPRECEDE`
`static int`	`MODE_NOPUT`
`static int`	`MODE_NOSTORE`
`static int`	`MODE_NOSUCCEED`
`static int`	`MODE_RDONLY`
`static int`	`MODE_RDWR`
`static int`	`MODE_SEQUENTIAL`
`static int`	`MODE_UNIQUE_OPEN`
`static int`	`MODE_WRONLY`
`static Op`	`NO_OP`
`static int`	`ORDER_C`
`static int`	`ORDER_FORTRAN`
`static Datatype`	`PACKED`
`static int`	`PROC_NULL`
`static Op`	`PROD`
`static Op`	`REPLACE`
`static Request`	`REQUEST_NULL`
`static int`	`ROOT`
`static int`	`SEEK_CUR`
`static int`	`SEEK_END`
`static int`	`SEEK_SET`
`static Datatype`	`SHORT`
`static Datatype`	`SHORT_INT`	Struct which must be used with `shortInt`.
`static ShortInt`	`shortInt`	Struct object for `SHORT_INT` datatype.
`static int`	`SIMILAR`
`static int`	`SUBVERSION`
`static int`	`SUCCESS`
`static Op`	`SUM`
`static int`	`TAG_UB`
`static int`	`THREAD_FUNNELED`
`static int`	`THREAD_MULTIPLE`
`static int`	`THREAD_SERIALIZED`
`static int`	`THREAD_SINGLE`
`static int`	`UNDEFINED`
`static int`	`UNEQUAL`
`static int`	`UNIVERSE_SIZE`
`static int`	`VERSION`
`static int`	`WIN_BASE`
`static int`	`WIN_DISP_UNIT`
`static int`	`WIN_SIZE`
`static int`	`WTIME_IS_GLOBAL`

Constructor Summary

Constructors
Constructor Description

MPI()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`protected static void`	`assertDirectBuffer(java.nio.Buffer buf)`	Asserts that a buffer is direct.
`protected static void`	`assertDirectBuffer(java.nio.Buffer sendbuf, java.nio.Buffer recvbuf)`	Asserts that buffers are direct.
`static void`	`attachBuffer(byte[] buffer)`	Attaches a user-provided buffer for sending.
`protected static java.lang.Object`	`attrGet(byte[] value)`
`protected static byte[]`	`attrSet(java.lang.Object value)`
`protected static void`	`check()`	Check if MPI has been initialized and hasn't been finalized.
`static byte[]`	`detachBuffer()`	Removes an existing buffer (for use in sending).
`static void`	`Finalize()`	Finalize MPI.
`static java.lang.String`	`getLibVersion()`	Returns the version of the MPI Library
`static java.lang.String`	`getProcessorName()`	Returns the name of the processor on which it is called.
`static Version`	`getVersion()`	Returns a version object representing the version of MPI being used.
`static java.lang.String[]`	`Init(java.lang.String[] args)`	Initialize MPI.
`static int`	`InitThread(java.lang.String[] args, int required)`	Initialize MPI with threads.
`protected static boolean`	`isDirectBuffer(java.lang.Object obj)`	Checks if an object is a direct buffer.
`static boolean`	`isFinalized()`	Test if MPI has been finalized.
`protected static boolean`	`isHeapBuffer(java.lang.Object obj)`	Checks if an object is a heap buffer.
`static boolean`	`isInitialized()`	Test if MPI has been initialized.
`static boolean`	`isThreadMain()`	Java binding of the MPI operation `MPI_IS_THREAD_MAIN`.
`static java.nio.ByteBuffer`	`newByteBuffer(int capacity)`	Allocates a new direct byte buffer.
`static java.nio.CharBuffer`	`newCharBuffer(int capacity)`	Allocates a new direct char buffer.
`static java.nio.DoubleBuffer`	`newDoubleBuffer(int capacity)`	Allocates a new direct double buffer.
`static java.nio.FloatBuffer`	`newFloatBuffer(int capacity)`	Allocates a new direct float buffer.
`static java.nio.IntBuffer`	`newIntBuffer(int capacity)`	Allocates a new direct int buffer.
`static java.nio.LongBuffer`	`newLongBuffer(int capacity)`	Allocates a new direct long buffer.
`static java.nio.ShortBuffer`	`newShortBuffer(int capacity)`	Allocates a new direct short buffer.
`static int`	`queryThread()`	Java binding of the MPI operation `MPI_QUERY_THREAD`.
`static java.nio.ByteBuffer`	`slice(byte[] buf, int offset)`	Creates a new buffer whose content is a shared subsequence of a buffer.
`static java.nio.CharBuffer`	`slice(char[] buf, int offset)`	Creates a new buffer whose content is a shared subsequence of a buffer.
`static java.nio.DoubleBuffer`	`slice(double[] buf, int offset)`	Creates a new buffer whose content is a shared subsequence of a buffer.
`static java.nio.FloatBuffer`	`slice(float[] buf, int offset)`	Creates a new buffer whose content is a shared subsequence of a buffer.
`static java.nio.IntBuffer`	`slice(int[] buf, int offset)`	Creates a new buffer whose content is a shared subsequence of a buffer.
`static java.nio.LongBuffer`	`slice(long[] buf, int offset)`	Creates a new buffer whose content is a shared subsequence of a buffer.
`static java.nio.ShortBuffer`	`slice(short[] buf, int offset)`	Creates a new buffer whose content is a shared subsequence of a buffer.
`static java.nio.ByteBuffer`	`slice(java.nio.ByteBuffer buf, int offset)`	Creates a new buffer whose content is a shared subsequence of a buffer.
`static java.nio.CharBuffer`	`slice(java.nio.CharBuffer buf, int offset)`	Creates a new buffer whose content is a shared subsequence of a buffer.
`static java.nio.DoubleBuffer`	`slice(java.nio.DoubleBuffer buf, int offset)`	Creates a new buffer whose content is a shared subsequence of a buffer.
`static java.nio.FloatBuffer`	`slice(java.nio.FloatBuffer buf, int offset)`	Creates a new buffer whose content is a shared subsequence of a buffer.
`static java.nio.IntBuffer`	`slice(java.nio.IntBuffer buf, int offset)`	Creates a new buffer whose content is a shared subsequence of a buffer.
`static java.nio.LongBuffer`	`slice(java.nio.LongBuffer buf, int offset)`	Creates a new buffer whose content is a shared subsequence of a buffer.
`static java.nio.ShortBuffer`	`slice(java.nio.ShortBuffer buf, int offset)`	Creates a new buffer whose content is a shared subsequence of a buffer.
`static double`	`wtick()`	Returns resolution of timer.
`static double`	`wtime()`	Returns an elapsed time on the calling processor.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

COMM_WORLD

public static final Intracomm COMM_WORLD

COMM_SELF

public static final Intracomm COMM_SELF

THREAD_SINGLE
```
public static final int THREAD_SINGLE
```

THREAD_FUNNELED

public static final int THREAD_FUNNELED

THREAD_SERIALIZED

public static final int THREAD_SERIALIZED

THREAD_MULTIPLE

public static final int THREAD_MULTIPLE

GRAPH
```
public static final int GRAPH
```

DIST_GRAPH
```
public static final int DIST_GRAPH
```

CART
```
public static final int CART
```

ANY_SOURCE
```
public static final int ANY_SOURCE
```

ANY_TAG
```
public static final int ANY_TAG
```

MAX
```
public static final Op MAX
```

MIN
```
public static final Op MIN
```

SUM
```
public static final Op SUM
```

PROD
```
public static final Op PROD
```

LAND
```
public static final Op LAND
```

BAND
```
public static final Op BAND
```

LOR
```
public static final Op LOR
```

BOR
```
public static final Op BOR
```

LXOR
```
public static final Op LXOR
```

BXOR
```
public static final Op BXOR
```

REPLACE
```
public static final Op REPLACE
```

NO_OP
```
public static final Op NO_OP
```

MINLOC
```
public static final Op MINLOC
```
Global minimum operator.
MINLOC and MAXLOC can be used with each of the following datatypes: INT2, SHORT_INT, LONG_INT, FLOAT_INT and DOUBLE_INT.

MAXLOC
```
public static final Op MAXLOC
```
Global maximum operator. See MINLOC.

DATATYPE_NULL

public static final Datatype DATATYPE_NULL

BYTE
```
public static final Datatype BYTE
```

CHAR
```
public static final Datatype CHAR
```

SHORT
```
public static final Datatype SHORT
```

BOOLEAN
```
public static final Datatype BOOLEAN
```

INT
```
public static final Datatype INT
```

LONG
```
public static final Datatype LONG
```

FLOAT
```
public static final Datatype FLOAT
```

DOUBLE
```
public static final Datatype DOUBLE
```

PACKED
```
public static final Datatype PACKED
```

FLOAT_COMPLEX

public static final Datatype FLOAT_COMPLEX

DOUBLE_COMPLEX

public static final Datatype DOUBLE_COMPLEX

INT2
```
public static final Datatype INT2
```
Struct which must be used with int2.

SHORT_INT
```
public static final Datatype SHORT_INT
```
Struct which must be used with shortInt.

LONG_INT
```
public static final Datatype LONG_INT
```
Struct which must be used with longInt.

FLOAT_INT
```
public static final Datatype FLOAT_INT
```
Struct which must be used with floatInt.

DOUBLE_INT
```
public static final Datatype DOUBLE_INT
```
Struct which must be used with doubleInt.

int2
```
public static final Int2 int2
```
Struct object for INT2 datatype.

shortInt
```
public static final ShortInt shortInt
```
Struct object for SHORT_INT datatype.

longInt
```
public static final LongInt longInt
```
Struct object for LONG_INT datatype.

floatInt
```
public static final FloatInt floatInt
```
Struct object for FLOAT_INT datatype.

doubleInt
```
public static final DoubleInt doubleInt
```
Struct object for DOUBLE_INT datatype.

REQUEST_NULL

public static final Request REQUEST_NULL

GROUP_EMPTY
```
public static final Group GROUP_EMPTY
```

INFO_ENV
```
public static final Info INFO_ENV
```

INFO_NULL
```
public static final Info INFO_NULL
```

PROC_NULL
```
public static final int PROC_NULL
```

UNDEFINED
```
public static final int UNDEFINED
```

IDENT
```
public static final int IDENT
```

CONGRUENT
```
public static final int CONGRUENT
```

SIMILAR
```
public static final int SIMILAR
```

UNEQUAL
```
public static final int UNEQUAL
```

TAG_UB
```
public static final int TAG_UB
```

HOST
```
public static final int HOST
```

IO
```
public static final int IO
```

WTIME_IS_GLOBAL

public static final int WTIME_IS_GLOBAL

APPNUM
```
public static final int APPNUM
```

LASTUSEDCODE
```
public static final int LASTUSEDCODE
```

UNIVERSE_SIZE
```
public static final int UNIVERSE_SIZE
```

WIN_BASE
```
public static final int WIN_BASE
```

WIN_SIZE
```
public static final int WIN_SIZE
```

WIN_DISP_UNIT
```
public static final int WIN_DISP_UNIT
```

VERSION
```
public static final int VERSION
```

SUBVERSION
```
public static final int SUBVERSION
```

ROOT
```
public static final int ROOT
```

KEYVAL_INVALID
```
public static final int KEYVAL_INVALID
```

BSEND_OVERHEAD
```
public static final int BSEND_OVERHEAD
```

MAX_OBJECT_NAME

public static final int MAX_OBJECT_NAME

MAX_PORT_NAME
```
public static final int MAX_PORT_NAME
```

MAX_DATAREP_STRING

public static final int MAX_DATAREP_STRING

MAX_INFO_KEY
```
public static final int MAX_INFO_KEY
```

MAX_INFO_VAL
```
public static final int MAX_INFO_VAL
```

ORDER_C
```
public static final int ORDER_C
```

ORDER_FORTRAN
```
public static final int ORDER_FORTRAN
```

DISTRIBUTE_BLOCK

public static final int DISTRIBUTE_BLOCK

DISTRIBUTE_CYCLIC

public static final int DISTRIBUTE_CYCLIC

DISTRIBUTE_NONE

public static final int DISTRIBUTE_NONE

DISTRIBUTE_DFLT_DARG

public static final int DISTRIBUTE_DFLT_DARG

MODE_CREATE
```
public static final int MODE_CREATE
```

MODE_RDONLY
```
public static final int MODE_RDONLY
```

MODE_WRONLY
```
public static final int MODE_WRONLY
```

MODE_RDWR
```
public static final int MODE_RDWR
```

MODE_DELETE_ON_CLOSE

public static final int MODE_DELETE_ON_CLOSE

MODE_UNIQUE_OPEN

public static final int MODE_UNIQUE_OPEN

MODE_EXCL
```
public static final int MODE_EXCL
```

MODE_APPEND
```
public static final int MODE_APPEND
```

MODE_SEQUENTIAL

public static final int MODE_SEQUENTIAL

DISPLACEMENT_CURRENT

public static final int DISPLACEMENT_CURRENT

SEEK_SET
```
public static final int SEEK_SET
```

SEEK_CUR
```
public static final int SEEK_CUR
```

SEEK_END
```
public static final int SEEK_END
```

MODE_NOCHECK
```
public static final int MODE_NOCHECK
```

MODE_NOPRECEDE
```
public static final int MODE_NOPRECEDE
```

MODE_NOPUT
```
public static final int MODE_NOPUT
```

MODE_NOSTORE
```
public static final int MODE_NOSTORE
```

MODE_NOSUCCEED
```
public static final int MODE_NOSUCCEED
```

LOCK_EXCLUSIVE
```
public static final int LOCK_EXCLUSIVE
```

LOCK_SHARED
```
public static final int LOCK_SHARED
```

ERRORS_ARE_FATAL

public static final Errhandler ERRORS_ARE_FATAL

ERRORS_RETURN

public static final Errhandler ERRORS_RETURN

SUCCESS
```
public static final int SUCCESS
```

ERR_BUFFER
```
public static final int ERR_BUFFER
```

ERR_COUNT
```
public static final int ERR_COUNT
```

ERR_TYPE
```
public static final int ERR_TYPE
```

ERR_TAG
```
public static final int ERR_TAG
```

ERR_COMM
```
public static final int ERR_COMM
```

ERR_RANK
```
public static final int ERR_RANK
```

ERR_REQUEST
```
public static final int ERR_REQUEST
```

ERR_ROOT
```
public static final int ERR_ROOT
```

ERR_GROUP
```
public static final int ERR_GROUP
```

ERR_OP
```
public static final int ERR_OP
```

ERR_TOPOLOGY
```
public static final int ERR_TOPOLOGY
```

ERR_DIMS
```
public static final int ERR_DIMS
```

ERR_ARG
```
public static final int ERR_ARG
```

ERR_UNKNOWN
```
public static final int ERR_UNKNOWN
```

ERR_TRUNCATE
```
public static final int ERR_TRUNCATE
```

ERR_OTHER
```
public static final int ERR_OTHER
```

ERR_INTERN
```
public static final int ERR_INTERN
```

ERR_IN_STATUS
```
public static final int ERR_IN_STATUS
```

ERR_PENDING
```
public static final int ERR_PENDING
```

ERR_ACCESS
```
public static final int ERR_ACCESS
```

ERR_AMODE
```
public static final int ERR_AMODE
```

ERR_ASSERT
```
public static final int ERR_ASSERT
```

ERR_BAD_FILE
```
public static final int ERR_BAD_FILE
```

ERR_BASE
```
public static final int ERR_BASE
```

ERR_CONVERSION
```
public static final int ERR_CONVERSION
```

ERR_DISP
```
public static final int ERR_DISP
```

ERR_DUP_DATAREP

public static final int ERR_DUP_DATAREP

ERR_FILE_EXISTS

public static final int ERR_FILE_EXISTS

ERR_FILE_IN_USE

public static final int ERR_FILE_IN_USE

ERR_FILE
```
public static final int ERR_FILE
```

ERR_INFO_KEY
```
public static final int ERR_INFO_KEY
```

ERR_INFO_NOKEY
```
public static final int ERR_INFO_NOKEY
```

ERR_INFO_VALUE
```
public static final int ERR_INFO_VALUE
```

ERR_INFO
```
public static final int ERR_INFO
```

ERR_IO
```
public static final int ERR_IO
```

ERR_KEYVAL
```
public static final int ERR_KEYVAL
```

ERR_LOCKTYPE
```
public static final int ERR_LOCKTYPE
```

ERR_NAME
```
public static final int ERR_NAME
```

ERR_NO_MEM
```
public static final int ERR_NO_MEM
```

ERR_NOT_SAME
```
public static final int ERR_NOT_SAME
```

ERR_NO_SPACE
```
public static final int ERR_NO_SPACE
```

ERR_NO_SUCH_FILE

public static final int ERR_NO_SUCH_FILE

ERR_PORT
```
public static final int ERR_PORT
```

ERR_QUOTA
```
public static final int ERR_QUOTA
```

ERR_READ_ONLY
```
public static final int ERR_READ_ONLY
```

ERR_RMA_CONFLICT

public static final int ERR_RMA_CONFLICT

ERR_RMA_SYNC
```
public static final int ERR_RMA_SYNC
```

ERR_SERVICE
```
public static final int ERR_SERVICE
```

ERR_SIZE
```
public static final int ERR_SIZE
```

ERR_SPAWN
```
public static final int ERR_SPAWN
```

ERR_UNSUPPORTED_DATAREP

public static final int ERR_UNSUPPORTED_DATAREP

ERR_UNSUPPORTED_OPERATION

public static final int ERR_UNSUPPORTED_OPERATION

ERR_WIN
```
public static final int ERR_WIN
```

ERR_LASTCODE
```
public static final int ERR_LASTCODE
```

ERR_SYSRESOURCE

public static final int ERR_SYSRESOURCE

Constructor Detail
- MPI
```
public MPI()
```

Method Detail
- Init
```
public static java.lang.String[] Init(java.lang.String[] args)
                               throws MPIException
```
  Initialize MPI.
  Java binding of the MPI operation MPI_INIT.
  
  Parameters:
  
  args - arguments to the main method.
  
  Returns:
  
  arguments
  
  Throws:
  
  MPIException - Signals that an MPI exception of some sort has occurred.
- InitThread
```
public static int InitThread(java.lang.String[] args,
                             int required)
                      throws MPIException
```
  Initialize MPI with threads.
  Java binding of the MPI operation MPI_INIT_THREAD.
  
  Parameters:
  
  args - arguments to the main method.
  
  required - desired level of thread support
  
  Returns:
  
  provided level of thread support
  
  Throws:
  
  MPIException - Signals that an MPI exception of some sort has occurred.
- queryThread
```
public static int queryThread()
                       throws MPIException
```
  Java binding of the MPI operation MPI_QUERY_THREAD.
  
  Returns:
  
  provided level of thread support
  
  Throws:
  
  MPIException - Signals that an MPI exception of some sort has occurred.
- isThreadMain
```
public static boolean isThreadMain()
                            throws MPIException
```
  Java binding of the MPI operation MPI_IS_THREAD_MAIN.
  
  Returns:
  
  true if it is the main thread
  
  Throws:
  
  MPIException - Signals that an MPI exception of some sort has occurred.
- Finalize
```
public static void Finalize()
                     throws MPIException
```
  Finalize MPI.
  Java binding of the MPI operation MPI_FINALIZE.
  
  Throws:
  
  MPIException - Signals that an MPI exception of some sort has occurred.
- wtime
```
public static double wtime()
                    throws MPIException
```
  Returns an elapsed time on the calling processor.
  Java binding of the MPI operation MPI_WTIME.
  
  Returns:
  
  time in seconds since an arbitrary time in the past.
  
  Throws:
  
  MPIException - Signals that an MPI exception of some sort has occurred.
- wtick
```
public static double wtick()
                    throws MPIException
```
  Returns resolution of timer.
  Java binding of the MPI operation MPI_WTICK.
  
  Returns:
  
  resolution of wtime in seconds.
  
  Throws:
  
  MPIException - Signals that an MPI exception of some sort has occurred.
- getVersion
```
public static Version getVersion()
```
  Returns a version object representing the version of MPI being used.
  Java binding of the MPI operation MPI_GET_VERSION.
  
  Returns:
  
  A version object representing the version and subversion of MPI being used.
- getLibVersion
```
public static java.lang.String getLibVersion()
```
  Returns the version of the MPI Library
  Java binding of the MPI operation MPI_GET_LIBRARY_VERSION.
  
  Returns:
  
  A string representation of the MPI Library
- getProcessorName
```
public static java.lang.String getProcessorName()
                                         throws MPIException
```
  Returns the name of the processor on which it is called.
  Java binding of the MPI operation MPI_GET_PROCESSOR_NAME.
  
  Returns:
  
  A unique specifier for the actual node.
  
  Throws:
  
  MPIException - Signals that an MPI exception of some sort has occurred.
- isInitialized
```
public static boolean isInitialized()
                             throws MPIException
```
  Test if MPI has been initialized.
  Java binding of the MPI operation MPI_INITIALIZED.
  
  Returns:
  
  true if Init has been called, false otherwise.
  
  Throws:
  
  MPIException - Signals that an MPI exception of some sort has occurred.
- isFinalized
```
public static boolean isFinalized()
                           throws MPIException
```
  Test if MPI has been finalized.
  Java binding of the MPI operation MPI_FINALIZED.
  
  Returns:
  
  true if Finalize has been called, false otherwise.
  
  Throws:
  
  MPIException - Signals that an MPI exception of some sort has occurred.
- attachBuffer
```
public static void attachBuffer(byte[] buffer)
                         throws MPIException
```
  Attaches a user-provided buffer for sending.
  Java binding of the MPI operation MPI_BUFFER_ATTACH.
  
  Parameters:
  
  buffer - initial buffer
  
  Throws:
  
  MPIException - Signals that an MPI exception of some sort has occurred.
- detachBuffer
```
public static byte[] detachBuffer()
                           throws MPIException
```
  Removes an existing buffer (for use in sending).
  Java binding of the MPI operation MPI_BUFFER_DETACH.
  
  Returns:
  
  initial buffer
  
  Throws:
  
  MPIException - Signals that an MPI exception of some sort has occurred.
- check
```
protected static void check()
                     throws MPIException
```
  Check if MPI has been initialized and hasn't been finalized.
  
  Throws:
  
  MPIException - Signals that an MPI exception of some sort has occurred.
- attrSet
```
protected static byte[] attrSet(java.lang.Object value)
                         throws MPIException
```
  Throws:
  
  MPIException
- attrGet
```
protected static java.lang.Object attrGet(byte[] value)
                                   throws MPIException
```
  Throws:
  
  MPIException
- newByteBuffer
```
public static java.nio.ByteBuffer newByteBuffer(int capacity)
```
  Allocates a new direct byte buffer.
  
  Parameters:
  
  capacity - The new buffer's capacity, in bytes
  
  Returns:
  
  The new byte buffer
- newCharBuffer
```
public static java.nio.CharBuffer newCharBuffer(int capacity)
```
  Allocates a new direct char buffer.
  
  Parameters:
  
  capacity - The new buffer's capacity, in chars
  
  Returns:
  
  The new char buffer
- newShortBuffer
```
public static java.nio.ShortBuffer newShortBuffer(int capacity)
```
  Allocates a new direct short buffer.
  
  Parameters:
  
  capacity - The new buffer's capacity, in shorts
  
  Returns:
  
  The new short buffer
- newIntBuffer
```
public static java.nio.IntBuffer newIntBuffer(int capacity)
```
  Allocates a new direct int buffer.
  
  Parameters:
  
  capacity - The new buffer's capacity, in ints
  
  Returns:
  
  The new int buffer
- newLongBuffer
```
public static java.nio.LongBuffer newLongBuffer(int capacity)
```
  Allocates a new direct long buffer.
  
  Parameters:
  
  capacity - The new buffer's capacity, in longs
  
  Returns:
  
  The new long buffer
- newFloatBuffer
```
public static java.nio.FloatBuffer newFloatBuffer(int capacity)
```
  Allocates a new direct float buffer.
  
  Parameters:
  
  capacity - The new buffer's capacity, in floats
  
  Returns:
  
  The new float buffer
- newDoubleBuffer
```
public static java.nio.DoubleBuffer newDoubleBuffer(int capacity)
```
  Allocates a new direct double buffer.
  
  Parameters:
  
  capacity - The new buffer's capacity, in doubles
  
  Returns:
  
  The new double buffer
- assertDirectBuffer
```
protected static void assertDirectBuffer(java.nio.Buffer buf)
```
  Asserts that a buffer is direct.
  
  Parameters:
  
  buf - buffer
- assertDirectBuffer
```
protected static void assertDirectBuffer(java.nio.Buffer sendbuf,
                                         java.nio.Buffer recvbuf)
```
  Asserts that buffers are direct.
  
  Parameters:
  
  sendbuf - The send buffer
  
  recvbuf - The receive buffer
- isDirectBuffer
```
protected static boolean isDirectBuffer(java.lang.Object obj)
```
  Checks if an object is a direct buffer.
  
  Parameters:
  
  obj - object
  
  Returns:
  
  true if the object is a direct buffer
- isHeapBuffer
```
protected static boolean isHeapBuffer(java.lang.Object obj)
```
  Checks if an object is a heap buffer.
  
  Parameters:
  
  obj - object
  
  Returns:
  
  true if the object is a heap buffer
- slice
```
public static java.nio.ByteBuffer slice(java.nio.ByteBuffer buf,
                                        int offset)
```
  Creates a new buffer whose content is a shared subsequence of a buffer.
  The content of the new buffer will start at the specified offset.
  
  Parameters:
  
  buf - buffer
  
  offset - offset
  
  Returns:
  
  the new buffer.
- slice
```
public static java.nio.CharBuffer slice(java.nio.CharBuffer buf,
                                        int offset)
```
  Creates a new buffer whose content is a shared subsequence of a buffer.
  The content of the new buffer will start at the specified offset.
  
  Parameters:
  
  buf - buffer
  
  offset - offset
  
  Returns:
  
  the new buffer.
- slice
```
public static java.nio.ShortBuffer slice(java.nio.ShortBuffer buf,
                                         int offset)
```
  Creates a new buffer whose content is a shared subsequence of a buffer.
  The content of the new buffer will start at the specified offset.
  
  Parameters:
  
  buf - buffer
  
  offset - offset
  
  Returns:
  
  the new buffer.
- slice
```
public static java.nio.IntBuffer slice(java.nio.IntBuffer buf,
                                       int offset)
```
  Creates a new buffer whose content is a shared subsequence of a buffer.
  The content of the new buffer will start at the specified offset.
  
  Parameters:
  
  buf - buffer
  
  offset - offset
  
  Returns:
  
  the new buffer.
- slice
```
public static java.nio.LongBuffer slice(java.nio.LongBuffer buf,
                                        int offset)
```
  Creates a new buffer whose content is a shared subsequence of a buffer.
  The content of the new buffer will start at the specified offset.
  
  Parameters:
  
  buf - buffer
  
  offset - offset
  
  Returns:
  
  the new buffer.
- slice
```
public static java.nio.FloatBuffer slice(java.nio.FloatBuffer buf,
                                         int offset)
```
  Creates a new buffer whose content is a shared subsequence of a buffer.
  The content of the new buffer will start at the specified offset.
  
  Parameters:
  
  buf - buffer
  
  offset - offset
  
  Returns:
  
  the new buffer.
- slice
```
public static java.nio.DoubleBuffer slice(java.nio.DoubleBuffer buf,
                                          int offset)
```
  Creates a new buffer whose content is a shared subsequence of a buffer.
  The content of the new buffer will start at the specified offset.
  
  Parameters:
  
  buf - buffer
  
  offset - offset
  
  Returns:
  
  the new buffer.
- slice
```
public static java.nio.ByteBuffer slice(byte[] buf,
                                        int offset)
```
  Creates a new buffer whose content is a shared subsequence of a buffer.
  The content of the new buffer will start at the specified offset.
  
  Parameters:
  
  buf - buffer
  
  offset - offset
  
  Returns:
  
  the new buffer.
- slice
```
public static java.nio.CharBuffer slice(char[] buf,
                                        int offset)
```
  Creates a new buffer whose content is a shared subsequence of a buffer.
  The content of the new buffer will start at the specified offset.
  
  Parameters:
  
  buf - buffer
  
  offset - offset
  
  Returns:
  
  the new buffer.
- slice
```
public static java.nio.ShortBuffer slice(short[] buf,
                                         int offset)
```
  Creates a new buffer whose content is a shared subsequence of a buffer.
  The content of the new buffer will start at the specified offset.
  
  Parameters:
  
  buf - buffer
  
  offset - offset
  
  Returns:
  
  the new buffer.
- slice
```
public static java.nio.IntBuffer slice(int[] buf,
                                       int offset)
```
  Creates a new buffer whose content is a shared subsequence of a buffer.
  The content of the new buffer will start at the specified offset.
  
  Parameters:
  
  buf - buffer
  
  offset - offset
  
  Returns:
  
  the new buffer.
- slice
```
public static java.nio.LongBuffer slice(long[] buf,
                                        int offset)
```
  Creates a new buffer whose content is a shared subsequence of a buffer.
  The content of the new buffer will start at the specified offset.
  
  Parameters:
  
  buf - buffer
  
  offset - offset
  
  Returns:
  
  the new buffer.
- slice
```
public static java.nio.FloatBuffer slice(float[] buf,
                                         int offset)
```
  Creates a new buffer whose content is a shared subsequence of a buffer.
  The content of the new buffer will start at the specified offset.
  
  Parameters:
  
  buf - buffer
  
  offset - offset
  
  Returns:
  
  the new buffer.
- slice
```
public static java.nio.DoubleBuffer slice(double[] buf,
                                          int offset)
```
  Creates a new buffer whose content is a shared subsequence of a buffer.
  The content of the new buffer will start at the specified offset.
  
  Parameters:
  
  buf - buffer
  
  offset - offset
  
  Returns:
  
  the new buffer.

Class MPI

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

COMM_WORLD

COMM_SELF

THREAD_SINGLE

THREAD_FUNNELED

THREAD_SERIALIZED

THREAD_MULTIPLE

GRAPH

DIST_GRAPH

CART

ANY_SOURCE

ANY_TAG

MAX

MIN

SUM

PROD

LAND

BAND

LOR

BOR

LXOR

BXOR

REPLACE

NO_OP

MINLOC

MAXLOC

DATATYPE_NULL

BYTE

CHAR

SHORT

BOOLEAN

INT

LONG

FLOAT

DOUBLE

PACKED

FLOAT_COMPLEX

DOUBLE_COMPLEX

INT2

SHORT_INT

LONG_INT

FLOAT_INT

DOUBLE_INT

int2

shortInt

longInt

floatInt

doubleInt

REQUEST_NULL

GROUP_EMPTY

INFO_ENV

INFO_NULL

PROC_NULL

UNDEFINED

IDENT

CONGRUENT

SIMILAR

UNEQUAL

TAG_UB

HOST

IO

WTIME_IS_GLOBAL

APPNUM

LASTUSEDCODE

UNIVERSE_SIZE

WIN_BASE

WIN_SIZE

WIN_DISP_UNIT

VERSION

SUBVERSION

ROOT

KEYVAL_INVALID

BSEND_OVERHEAD

MAX_OBJECT_NAME

MAX_PORT_NAME