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MPI error message and other applicatioins

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Special Forums UNIX and Linux Applications High Performance Computing MPI error message and other applicatioins
# 1  
Old 08-13-2009
Question MPI error message and other applicatioins
1st,I'm a newbie.

I've written a mpi program to realize the parallel computing and encounter many problems.

1. When the computing scale is small, that means the communication time is short, just needs few minutes, such as 14 minutes or less. The program runs well and finished the jog.

But when the computing scale is bigger, that means need hours of running to finish,probelms come. After about half an hour's running,the program exsit with abnormal,the error message is that:p4_error: interrupt SIGx: 6
but the calculating result in the running time is correct.I don't understand the meaning of this error message. Any one can interpret it to me specifically? And if someone could give me the mpi error message list to chech each message's meaning , I'll appreciate it a lot.

2. I'd like to set one rank as the master rank, and give it higher priority. But I still don't know how to se the priority in unix. Maybe someone could give me a way.

Thank you for all your help.
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LEARN ABOUT DEBIAN

mpi_op_c2f

MPI_Op_c2f(3)							      LAM/MPI							     MPI_Op_c2f(3)

NAME

       MPI_Op_c2f -  Convert an op handle from its C representation to its Fortran representation

SYNOPSIS

       #include <mpi.h>
       MPI_Fint
       MPI_Op_c2f(MPI_Op op)

INPUT PARAMETER

       op     - C op handle

RETURN VALUE

       f_handle
	      - Fortran op handle

NOTES FOR FORTRAN

       All  MPI  routines in Fortran (except for MPI_WTIME and MPI_WTICK ) have an additional argument ierr at the end of the argument list.  ierr
       is an integer and has the same meaning as the return value of the routine in C.	In Fortran, MPI routines are subroutines, and are  invoked
       with the call statement.

       All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in Fortran.

ERRORS

       This function does not return the normal MPI_SUCCESS integer value upon success.  Instead, it returns a handle to the converted object.	If
       an error occurs, the appropriate NULL handle will be returned.

SEE ALSO

       MPI_Op_c2f(3)

MORE INFORMATION

       For more information, please see the official MPI Forum web site, which contains the text of both the MPI-1  and  MPI-2	standards.   These
       documents contain detailed information about each MPI function (most of which is not duplicated in these man pages).

       http://www.mpi-forum.org/

LOCATION

       handles.c

LAM
/MPI 7.1.4							     6/24/2006							     MPI_Op_c2f(3)