70 строки
2.5 KiB
Plaintext
70 строки
2.5 KiB
Plaintext
.\" Copyright 2010 Cisco Systems, Inc. All rights reserved.
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.\" Copyright 2006-2008 Sun Microsystems, Inc.
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.\" Copyright (c) 1996 Thinking Machines Corporation
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.TH MPI_Abort 3 "#OMPI_DATE#" "#PACKAGE_VERSION#" "#PACKAGE_NAME#"
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.SH NAME
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\fBMPI_Abort\fP \- Terminates MPI execution environment.
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.SH SYNTAX
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.ft R
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.SH C Syntax
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.nf
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#include <mpi.h>
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int MPI_Abort(MPI_Comm \fIcomm\fP, int\fI errorcode\fP)
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.fi
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.SH Fortran Syntax
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.ft R
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.nf
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INCLUDE 'mpif.h'
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MPI_ABORT(\fICOMM\fP, \fIERRORCODE\fP, \fIIERROR\fP)
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INTEGER \fICOMM\fP,\fI ERRORCODE\fP,\fI IERROR
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.fi
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.SH C++ Syntax
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.nf
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#include <mpi.h>
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void Comm::Abort(int \fIerrorcode\fP)
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.fi
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.SH Java Syntax
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.nf
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import mpi.*;
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void MPI.Abort(int \fIerrorcode\fP)
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.fi
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.SH INPUT PARAMETERS
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.ft R
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.TP 1i
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comm
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Communicator of tasks to abort.
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.TP 1i
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errorcode
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Error code to return to invoking environment.
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.SH OUTPUT PARAMETER
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.ft R
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.TP 1i
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IERROR
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Fortran only: Error status (integer).
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.SH DESCRIPTION
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.ft R
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This routine makes a "best attempt" to abort all tasks in the group of
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comm. This function does not require that the invoking environment take any
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action with the error code. However, a UNIX or POSIX
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environment should handle this as a return errorcode from the main program
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or an abort (errorcode).
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.sp
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The long-term goal of the Open MPI implementation is to terminate all processes in all tasks that contain a process in \fIcomm\fP, and the error code is not returned to the invoking environment. At the moment, this isn't fully implemented and MPI_Abort will terminate the entire job. The Java implementation currently does not allow specification of a communicator and aborts the entire job - this will be updated to support the long-term implementation at a later date.
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.sp
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Note: All associated processes are sent a SIGTERM.
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.SH ERRORS
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Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ and Java functions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism will be used to throw an MPI::Exception object - similar behavior is followed by Java.
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.sp
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Before the error value is returned, the current MPI error handler is
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called. By default, this error handler aborts the MPI job, except for I/O function errors. The error handler
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may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.
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