一直用gdb调试程序，但却不会并行调试。最近写的代码单核运行没问题了，但并行运行有问题，应该是不同processor交界面处出现问题。之前对并行这方面涉及不多，对并行编程思想认识不直观，故想尝试并行调试。
我在openWiki上看到一个mpirunDebug文件(文件如下)，但是不会用。求大佬指点一二，或者有什么好用的并行debug工具推荐一下？
#!/bin/sh
#
# Driver script to run mpi jobs with the processes in separate
# windows or to separate log files.
# Requires bash on all processors.


PROGNAME=`basename $0`
PROGDIR=`dirname $0`

if [ `uname -s` = 'Linux' ]; then
   ECHO='echo -e'
else
   ECHO='echo'
fi


printUsage() {
  echo ""
  echo "Usage: $PROGNAME -np <dd> <executable> <args>"
  echo ""
  echo "This will run like mpirun but with each process in an xterm"
}

nProcs=''
exec=''
args=''

while [ "$1" != "" ]; do
    echo "$1"
    case $1 in
      -np)
        nProcs=$2;shift
        ;;
      *)
        if [ ! "$exec" ]; then
            exec=$1
        elif [ ! "$args" ]; then
            args="\"$1\""
        else
            args="$args \"$1\""
        fi
        ;;

    esac
    shift
done

echo "nProcs=$nProcs"
echo "exec=$exec"
echo "args=$args"

if [ ! "$nProcs" ]; then
    printUsage
    exit 1
fi
if [ ! "$args" ]; then
    printUsage
    exit 1
fi
if [ ! "$exec" ]; then
    printUsage
    exit 1
fi

exec=`which $exec`
if [ ! -x "$exec" ]; then
    echo "Cannot find executable $exec or is not executable"
    printUsage
    exit 1
fi



echo "run $args" > $HOME/gdbCommands
echo "where" >> $HOME/gdbCommands
echo "Constructed gdb initialization file $HOME/gdbCommands"

$ECHO "Choose running method: 1)gdb+xterm  2)gdb  3)log  4)xterm+valgrind 5)nemiver: \c"
read method
if [ "$method" -ne 1 -a "$method" -ne 2 -a "$method" -ne 3 -a "$method" -ne 4 -a "$method" -ne 5 ]; then
    printUsage
    exit 1
fi

$ECHO "Run all processes local or distributed? 1)local  2)remote: \c"
read spawn
if [ "$spawn" -ne 1 -a "$spawn" -ne 2 ]; then
    printUsage
    exit 1
fi

# check ~/.$WM_PROJECT/$WM_PROJECT_VERSION/
# check ~/.$WM_PROJECT/
# check <installedProject>/etc/
if [ "$WM_PROJECT" ]; then

   for i in \
      $HOME/.WM_PROJECT/$WM_PROJECT_VERSION \
      $HOME/.WM_PROJECT \
      $WM_PROJECT_DIR/etc \
      ;
   do
      if [ -f "$i/bashrc" ]; then
         sourceFoam="$i/bashrc"
         break
      fi
   done
fi

# Construct test string for remote execution.
# Source OpenFOAM settings if OpenFOAM environment not set.
# attempt to preserve the installation directory 'FOAM_INST_DIR'
if [ "$FOAM_INST_DIR" ]; then
   sourceFoam='[ "$WM_PROJECT" ] || '"FOAM_INST_DIR=$FOAM_INST_DIR . $sourceFoam"
else
   sourceFoam='[ "$WM_PROJECT" ] || '". $sourceFoam"
fi

echo "**sourceFoam:$sourceFoam"

rm -f $HOME/mpirun.schema
touch $HOME/mpirun.schema

proc=0
xpos=0
ypos=0
for ((proc=0; proc<$nProcs; proc++))
do
    procCmdFile="$HOME/processor${proc}.sh"
    procLog="processor${proc}.log"
    geom="-geometry 120x20+$xpos+$ypos"
    node=""

    if [ .$WM_MPLIB = .OPENMPI ]; then
        node="-np 1 "
    elif [ .$WM_MPLIB = .LAM ]; then
        if [ "$spawn" -eq 2 ]; then
            node="c${proc} "
        fi
    fi

    echo "#!/bin/sh" > $procCmdFile
    if [ "$method" -eq 1 ]; then
        echo "$sourceFoam; cd $PWD; gdb -command $HOME/gdbCommands $exec 2>&1 | tee $procLog; read dummy" >> $procCmdFile
        #echo "$sourceFoam; cd $PWD; $exec $args; read dummy" >> $procCmdFile
        echo "${node}xterm -font fixed -title 'processor'$proc $geom -e $procCmdFile" >> $HOME/mpirun.schema
    elif [ "$method" -eq 2 ]; then
        echo "$sourceFoam; cd $PWD; gdb -command $HOME/gdbCommands >& $procLog" >> $procCmdFile
        echo "${node}$procCmdFile" >> $HOME/mpirun.schema
    elif [ "$method" -eq 3 ]; then
        echo "$sourceFoam; cd $PWD; $exec $args >& $procLog" >> $procCmdFile
        echo "${node}$procCmdFile" >> $HOME/mpirun.schema
    elif [ "$method" -eq 4 ]; then
        echo "$sourceFoam; cd $PWD; valgrind $exec $args; read dummy" >> $procCmdFile
        echo "${node}xterm -font fixed -title 'processor'$proc $geom -e $procCmdFile" >> $HOME/mpirun.schema
    elif [ "$method" -eq 5 ]; then
    ## maybe could use nemiver sessions for reloading breakpoints --session=<N> or --last
#         echo "$sourceFoam; cd $PWD; nemiver --last $exec $args; read dummy" >> $procCmdFile
        echo "$sourceFoam; cd $PWD; nemiver $exec $args; read dummy" >> $procCmdFile
#         echo "$sourceFoam; cd $PWD; ddd --args $exec $args; read dummy" >> $procCmdFile
        echo "${node} $procCmdFile" >> $HOME/mpirun.schema
    fi

    chmod +x $procCmdFile

    let column=proc%6
    if [ $proc -ne 0 -a $column -eq 0 ]; then
        ((xpos+=600))
        ((ypos=0))
    else
        ((ypos+=200))
    fi
done

for ((proc=0; proc<$nProcs; proc++))
do
    procLog="processor${proc}.log"
    echo "    tail -f $procLog"
done

$ECHO "Constructed $HOME/mpirun.schema file. Press return to execute.\c"
read dummy
if [ .$WM_MPLIB = .OPENMPI ]; then
    mpirun -app $HOME/mpirun.schema </dev/null
elif [ .$WM_MPLIB = .LAM ]; then
    mpirun $HOME/mpirun.schema </dev/null
fi
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