diff --git a/xCAT-server/share/xcat/tools/xCATreg b/xCAT-server/share/xcat/tools/xCATreg
index c3f465c36..318fcf319 100644
--- a/xCAT-server/share/xcat/tools/xCATreg
+++ b/xCAT-server/share/xcat/tools/xCATreg
@@ -39,14 +39,15 @@ BEGIN
 use lib "$::XCATROOT/lib/perl";
 
 my $date;
-#my $regrootdir="/home/autotest_code";
-#my $mailtitle="P Cluster";
-my $regrootdir="/xCATreg";
-my $mailtitle="X Cluster";
+my $regrootdir="/home/autotest_code";
+my $mailtitle="PPC64LE Cluster";
+#my $regrootdir="/xCATreg";
+#my $mailtitle="X Cluster";
 my $logfiledir = "$regrootdir/log";
 my $logfile="";
 my $configfiledir = "$regrootdir/conf";
 my $configfile = "$regrootdir/conf/xCATreg.conf";
+my $xcatcoredowndir = "$regrootdir/xcatsource/xcat-core-build-down";
 my $xcatcoredir = "$regrootdir/xcatsource/xcat-core";
 my $xcatdepdir = "$regrootdir/xcatsource/xcat-dep";
 my $osisodir = "$regrootdir/iso";
@@ -269,7 +270,13 @@ sub mn_install {
 
 	my $os = $confkeys{$mn."os"};
 	my $arch = "ppc64";
-	$arch="x86_64" if($mn !~ /aix/ && $mn =~ /x/); 
+        if($mn !~ /aix/ && $mn =~ /x/){
+            $arch="x86_64";
+        }elsif($mn !~ /aix/ && $mn =~ /LE/){
+            $arch="ppc64le";
+        } elsif($mn !~ /aix/ && $mn =~ /EL/){
+            $arch="ppc64el";
+        }
     my $osimage="";
 	
 	if($mn !~ /aix/){
@@ -288,8 +295,11 @@ sub mn_install {
 	
 	send_msg(2, "[$mn->$confkeys{$mn}][mn_install] installing $osimage for node $confkeys{$mn}................");
 
+        &runcmd("makedhcp -n");
+        &runcmd("makedns -n");
+
 	&runcmd("nodeset $confkeys{$mn} osimage=$osimage");
-	if( $arch =~ /x86_64/){
+	if( $arch =~ /x86_64/ || $arch =~ /ppc64le/ || $arch =~ /ppc64el/){
 		&runcmd("rpower $confkeys{$mn} boot");
 	}else{
 	    &runcmd("rnetboot $confkeys{$mn}");
@@ -314,8 +324,9 @@ sub mn_install {
 		system("xdsh $confkeys{$mn} \"iptables -A FORWARD -i eth1 -j ACCEPT\" >/dev/null 2>&1");     
         system("xdsh $confkeys{$mn} \"iptables -A FORWARD -i eth1 -o eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT\" >/dev/null 2>&1");
 	}
-       if($os =~ /rhels7/){
+       if($os =~ /rhels7/ || $os =~ /rhels7.2/){
        system("xdsh $confkeys{$mn} \"yum -y install bzip2 > /var/log/xcat/install_xcat.log 2>&1\" >/dev/null 2>&1");
+       system("xdsh $confkeys{$mn} \"yum -y install createrepo > /var/log/xcat/install_xcat.log 2>&1\" >/dev/null 2>&1");
        }
     return 0;
 }
@@ -365,6 +376,27 @@ sub down_dep{
     return ($depupdateflag);
 }
 
+#########################################
+# down xcat-core build
+###########################################
+sub down_xcat_core_build {
+    my $mn=shift;
+    send_msg(2, "[$mn->$confkeys{$mn}][down xcatcore] starting to down the latest xcat core");
+    my $downxcatcoredowndir="$xcatcoredowndir/$mn";
+    if (! -f "$xcatcoredowndir/$mn"){
+    `mkdir -p $xcatcoredowndir/$mn`;
+    }
+    my $downxcatcoreip = $confkeys{$mn."downxcatcoreip"};
+    my $downxcatcoredir  = $confkeys{$mn."downxcatcoredir"};
+    my $latestxcatcoredir =  `ssh  $downxcatcoreip ls -rt $downxcatcoredir / |tail -1  |awk '{printf \$0}'`;
+    my $xcatcorename = $confkeys{$mn."xcatcorename"};
+    `scp -r $downxcatcoreip\:$downxcatcoredir/$latestxcatcoredir/$xcatcorename  $downxcatcoredowndir `;
+    if($? != 0){
+    send_msg(0,"[$mn->$confkeys{$mn}][down_xcat_core_build]  failed");
+    return 1;
+    }
+ }
+
 #######################################
 # copy code
 #######################################
@@ -372,6 +404,13 @@ sub copy_code {
     my $mn=shift;
 	
     send_msg(2, "[$mn->$confkeys{$mn}][copy_code] starting to copy the latest xcat code and dep");
+    my $dnsserver=`cat /etc/hosts |grep $confkeys{$mn}|awk '{print \$1}'|head -n 1`;
+    chomp($dnsserver);
+    my $res = system("xdsh $confkeys{$mn} \"sed -i 's:nameserver .*:nameserver $dnsserver:g' /etc/resolv.conf\" >/dev/null 2>&1");
+    if($res != 0){
+        send_msg(0, "[$mn->$confkeys{$mn}][install_xcat] modify resolv.conf in $mn failed");
+        return 1;
+        }
 
 	#copy xcat-dep tarball to MN:/
 	my $depball="";
@@ -380,21 +419,37 @@ sub copy_code {
 	}elsif($mn =~ /ubuntu/){
 	    $depball = `ls -l $xcatdepdir/$mn|awk '{print \$9}'|grep ubuntu|tail -n 1`;
 	}else{
-	    $depball = `ls -l $xcatdepdir/$mn|awk '{print \$9}'|grep 'xcat-dep-[0-9]\\{12\\}.tar.bz'|tail -n 1`;
+	    $depball = `ls -l $xcatdepdir/$mn|awk '{print \$9}'|grep 'xcat-dep'|tail -n 1`;
 	}
 	chomp($depball);
+        print "depball is $depball\n";
+        my $coreball = `ls -l $xcatcoredowndir/$mn|awk '{print \$9}'|tail -n 1`;
+        chomp($coreball);
 	if ($depball eq ""){
 	    send_msg(0, "[$mn->$confkeys{$mn}][copy_code] can't find dep tarball for $mn under dir $xcatdepdir");
 	    return 1;
 	}
-	send_msg(2, "[$mn->$confkeys{$mn}][copy_code] find dep tarball $depball for $mn");
+        send_msg(2, "[$mn->$confkeys{$mn}][copy_code] find dep tarball $depball for $mn");
+        if ($coreball eq ""){
+             send_msg(0, "[$mn->$confkeys{$mn}][copy_code] can't find core tarball for $mn under dir $coreball");
+             return 1;
+        }
 
-    my $res = system("scp $xcatdepdir/$mn/$depball root\@$confkeys{$mn}:/  >/dev/null");
-    if ($?){
+        send_msg(2, "[$mn->$confkeys{$mn}][copy_code] find core tarball $coreball for $mn");
+
+    $res = system("scp $xcatdepdir/$mn/$depball root\@$confkeys{$mn}:/  >/dev/null");
+    if ($res){
         send_msg(0, "[$mn->$confkeys{$mn}][copy_code] copy $depball to $mn failed");
         return 1;
     }
 	send_msg(2, "[$mn->$confkeys{$mn}][copy_code] copy $depball to $mn successfully");
+    
+     $res = system("scp $xcatcoredowndir/$mn/$coreball root\@$confkeys{$mn}:/  >/dev/null");
+     if ($res){
+         send_msg(0, "[$mn->$confkeys{$mn}][copy_code] copy $coreball to $mn failed");
+         return 1;
+     }
+     send_msg(2, "[$mn->$confkeys{$mn}][copy_code] copy $coreball to $mn successfully");
 	
 	$res = system("xdsh $confkeys{$mn} 'cd / && tar xvf /$depball' >/dev/null 2>&1");
     if ($?){
@@ -402,7 +457,13 @@ sub copy_code {
         return 1;
     }
 	send_msg(2, "[$mn->$confkeys{$mn}][copy_code] untar $depball in $mn successfully");
-	
+    $res = system("xdsh $confkeys{$mn} 'cd / && tar xvf /$coreball' >/dev/null 2>&1");	
+    if ($?){
+        send_msg(0, "[$mn->$confkeys{$mn}][copy_code] untar $coreball in $mn failed");
+        return 1;
+    }
+        send_msg(2, "[$mn->$confkeys{$mn}][copy_code] untar $coreball in $mn successfully");
+ 
     #copy xcat-core source code to MN:/
 	if($mn =~ /ubuntux/){
         #defect 107 Automation ENV replaces the link file to real file before running xcat build
@@ -430,7 +491,13 @@ sub copy_code {
 	system("sed -i 's|os=\\S*|os=$os|g' $configfiledir/$regconf");
 	
 	my $arch = "ppc64";
-	$arch="x86_64" if($mn !~ /aix/ && $mn =~ /x/);
+	if($mn !~ /aix/ && $mn =~ /x/){
+            $arch="x86_64";
+        }elsif($mn !~ /aix/ && $mn =~ /LE/){
+            $arch="ppc64le";
+        }elsif($mn !~ /aix/ && $mn =~ /EL/){
+           $arch="ppc64el";
+        }
 	my $iso;
 	
 	#copy specific files to MN for each platform
@@ -498,7 +565,7 @@ sub copy_code {
 		my $osversion = $2;
         if ($mn =~ /ubuntux/){
             $iso=`ls -l $osisodir| awk '{print \$9}'|grep ubuntu|grep amd64 |grep $osversion |tail -n 1`;
-        }elsif($mn =~ /ubuntupel/){
+        }elsif($mn =~ /ubuntuEL/){
             $iso=`ls -l $osisodir| awk '{print \$9}'|grep ubuntu|grep ppc64el |grep $osversion |tail -n 1`;
 		}
 		chomp($iso);
@@ -520,71 +587,6 @@ sub copy_code {
     return 0;
 }
 
-
-#######################
-# build xcat
-#######################
-sub build_xcat {
-    my $mn = shift;
-	
-    #print "=======[$mn->$confkeys{$mn}] build_xcat========\n";
-	send_msg(2, "[$mn->$confkeys{$mn}][build_xcat] starting to build xcat in $confkeys{$mn}");
-            
-    #modify /etc/resolv.conf	
-	my $dnsserver=`cat /etc/hosts |grep $confkeys{$mn}|awk '{print \$1}'|head -n 1`;
-	chomp($dnsserver);
-    my $res = system("xdsh $confkeys{$mn} \"sed -i 's:nameserver .*:nameserver $dnsserver:g' /etc/resolv.conf\" >/dev/null 2>&1");
-    if ($res != 0){
-        send_msg(0, "[$mn->$confkeys{$mn}][install_xcat] modify resolv.conf in $mn failed");
-        return 1;
-    }
-
-	if($mn =~ /rh/){
-	    system("xdsh $confkeys{$mn} 'yum  -y groupinstall \"Development tools\"' >/dev/null 2>&1");	
-	    system("xdsh $confkeys{$mn} 'yum -y groupinstall \"Perl Support\"' >/dev/null 2>&1");
-	    system("xdsh $confkeys{$mn} 'yum  -y install createrepo' >/dev/null 2>&1");		
-    }
-	
-    if($mn =~ /sles/){
-	    system("xdsh $confkeys{$mn} 'zypper -n install perl-DBI' >/dev/null 2>&1");
-    }
-	
-    if($mn =~ /ubuntu/){
-	    system("xdsh $confkeys{$mn} \"echo \"nameserver 9.0.2.1\" >> /etc/resolv.conf\" >/dev/null 2>&1");
-	    system("xdsh $confkeys{$mn} 'apt-get -y install software-properties-common' >/dev/null 2>&1");
-		if($mn =~ /ubuntux/){
-	        system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://archive.ubuntu.com/ubuntu \$(lsb_release -sc) main\"' >/dev/null 2>&1");
-	        system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://archive.ubuntu.com/ubuntu \$(lsb_release -sc)-updates main\"' >/dev/null 2>&1");
-	        system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://archive.ubuntu.com/ubuntu \$(lsb_release -sc) universe\"' >/dev/null 2>&1");
-	        system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://archive.ubuntu.com/ubuntu \$(lsb_release -sc)-updates universe\"' >/dev/null 2>&1");
-		}elsif($mn =~ /ubuntupel/){
-	        system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://ports.ubuntu.com/ubuntu-ports \$(lsb_release -sc) main\"' >/dev/null 2>&1");
-	        system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://ports.ubuntu.com/ubuntu-ports \$(lsb_release -sc)-updates main\"' >/dev/null 2>&1");
-	        system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://ports.ubuntu.com/ubuntu-ports \$(lsb_release -sc) universe\"' >/dev/null 2>&1");
-	        system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://ports.ubuntu.com/ubuntu-ports \$(lsb_release -sc)-updates universe\"' >/dev/null 2>&1");
-		}
-		
-        system("xdsh $confkeys{$mn} \"wget -O - \"http://sourceforge.net/projects/xcat/files/ubuntu/apt.key/download\" | apt-key add -\" >/dev/null 2>&1");
-		system("xdsh $confkeys{$mn} 'apt-get clean all' >/dev/null 2>&1");
-		system("xdsh $confkeys{$mn} 'apt-get update' >/dev/null 2>&1");
-		system("xdsh $confkeys{$mn} 'apt-get -y install build-essential dpkg-dev dh-make debhelper fakeroot gnupg lintian pbuilder quilt reprepro libsoap-lite-perl libdbi-perl' >/dev/null 2>&1");
-    }
-	
-    #build xcat core ball 
-	if($mn =~ /ubuntux/){
-        $res = system("xdsh $confkeys{$mn} '/xcatbuild/xcat-core/build-ubunturepo -c UP=0 BUILDALL=1 > /var/log/xcat/build_xcat.log 2>&1' >/dev/null  2>&1");
-	}else{
-        $res = system("xdsh $confkeys{$mn} '/xcat-core/buildlocal.sh CURDIR=/xcat-core > /var/log/xcat/build_xcat.log 2>&1' >/dev/null 2>&1");
-	}
-    if ($res != 0){
-        send_msg(0, "[$mn->$confkeys{$mn}][build_xcat] build xcat in $mn failed");
-        return 1;
-    }
-
-    send_msg(2, "[$mn->$confkeys{$mn}][build_xcat] build xcat in $mn successfully");
-    return 0;
-}
-
 #######################################
 # config mn
 #######################################
@@ -594,42 +596,81 @@ sub install_xcat {
 	
 	my $os = $confkeys{$mn."os"};
 	my $arch = "ppc64";
-	$arch="x86_64" if($mn !~ /aix/ && $mn =~ /x/);
+        if($mn !~ /aix/ && $mn =~ /x/){
+            $arch="x86_64";
+        }elsif($mn !~ /aix/ && $mn =~ /LE/){
+            $arch="ppc64le";
+        }elsif($mn !~ /aix/ && $mn =~ /EL/){
+            $arch="ppc64el";
+        }
+        if($mn =~ /ubuntu/){
+            system("xdsh $confkeys{$mn} \"echo \"nameserver 9.0.2.1\" >> /etc/resolv.conf\" >/dev/null 2>&1");
+            system("xdsh $confkeys{$mn} 'apt-get -y install software-properties-common' >/dev/null 2>&1");
+                if($mn =~ /ubuntux/){
+                system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://archive.ubuntu.com/ubuntu \$(lsb_release -sc) main\"' >/dev/null 2>&1");
+                system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://archive.ubuntu.com/ubuntu \$(lsb_release -sc)-updates main\"' >/dev/null 2>&1");
+                system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://archive.ubuntu.com/ubuntu \$(lsb_release -sc) universe\"' >/dev/null 2>&1");
+                system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://archive.ubuntu.com/ubuntu \$(lsb_release -sc)-updates universe\"' >/dev/null 2>&1");
+                }elsif($mn =~ /ubuntuEL/){
+                system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://ports.ubuntu.com/ubuntu-ports \$(lsb_release -sc) main\"' >/dev/null 2>&1");
+                system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://ports.ubuntu.com/ubuntu-ports \$(lsb_release -sc)-updates main\"' >/dev/null 2>&1");
+                system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://ports.ubuntu.com/ubuntu-ports \$(lsb_release -sc) universe\"' >/dev/null 2>&1");
+                system("xdsh $confkeys{$mn} 'add-apt-repository \"deb http://ports.ubuntu.com/ubuntu-ports \$(lsb_release -sc)-updates universe\"' >/dev/null 2>&1");
+                }
+
+                system("xdsh $confkeys{$mn} \"wget -O - \"http://sourceforge.net/projects/xcat/files/ubuntu/apt.key/download\" | apt-key add -\" >/dev/null 2>&1");
+                system("xdsh $confkeys{$mn} 'apt-get clean all' >/dev/null 2>&1");
+                system("xdsh $confkeys{$mn} 'apt-get update' >/dev/null 2>&1");
+                system("xdsh $confkeys{$mn} 'apt-get -y install build-essential dpkg-dev dh-make debhelper fakeroot gnupg lintian pbuilder quilt reprepro libsoap-lite-perl libdbi-perl' >/dev/null 2>&1");
+    }
 	
 	if($mn =~ /rh/){
                 $os =~ /(\D+)(\d+)\.?(\d?)/;
+                system("xdsh $confkeys{$mn} \"cd /xcat-core && ./mklocalrepo.sh\" >/dev/null 2>&1");
                 system("xdsh $confkeys{$mn} \"cd /xcat-dep/rh$2/$arch && ./mklocalrepo.sh\" >/dev/null 2>&1");
                 system("xdsh $confkeys{$mn} \"rpm --import /RPM-GPG-KEY-redhat-release\" >/dev/null 2>&1");
                 system("xdsh $confkeys{$mn} \"yum -y install xCAT xCAT-test > /var/log/xcat/install_xcat.log 2>&1\" >/dev/null 2>&1");
            if($os =~ /rhels7/){
-                system("xdsh $confkeys{$mn} \"yum -y install mariadb-devel-5.5.35-3.el7  mariadb-libs-5.5.35-3.el7  mariadb-server-5.5.35-3.el7 mariadb-bench-5.5.35-3.el7 mariadb-5.5.35-3.el7  perl-DBD-MySQL  mysql-connector-odbc unixODBC\" >/dev/null 2>&1");
+                system("xdsh $confkeys{$mn} \"yum -y install mariadb-devel  mariadb-libs  mariadb-server mariadb-bench mariadb  perl-DBD-MySQL  mysql-connector-odbc unixODBC\" >/dev/null 2>&1");
                 }elsif($os =~ /rhels6/){
 		system("xdsh $confkeys{$mn} \"yum -y install mysql-server mysql mysql-bench mysql-devel mysql-connector-odbc\" >/dev/null 2>&1");
                 }
                 system("xdsh $confkeys{$mn} \"source /etc/profile.d/xcat.sh\" >/dev/null 2>&1");
 		if($mn =~ /rhx/){
-            system("xdsh $confkeys{$mn} \"yum install -y perl-Sys-Virt\" >/dev/null 2>&1");
+                    system("xdsh $confkeys{$mn} \"yum install -y perl-Sys-Virt\" >/dev/null 2>&1");
 		}
 	}elsif($mn =~ /sles/){
 	    $os =~ /(\D+)(\d+)\.?(\d?)/;
-		system("xdsh $confkeys{$mn} \"zypper ar file:///xcat-dep/sles$2/$arch xCAT-dep\" >/dev/null 2>&1");   
+		system("xdsh $confkeys{$mn} \"zypper ar file:///xcat-dep/sles$2/$arch xCAT-dep\" >/dev/null 2>&1");  
+                system("xdsh $confkeys{$mn} \"zypper ar file:///xcat-core xCAT-core\" >/dev/null 2>&1"); 
 		system("xdsh $confkeys{$mn} \"zypper sl -U\" >/dev/null 2>&1"); 
 		system("xdsh $confkeys{$mn} \"zypper --gpg-auto-import-keys search --match-exact -s screen\" >/dev/null 2>&1");   
 		system("xdsh $confkeys{$mn} \"zypper -n install xCAT xCAT-test > /var/log/xcat/install_xcat.log 2>&1\" >/dev/null 2>&1"); 
 		system("xdsh $confkeys{$mn} \"zypper -n install createrepo\" >/dev/null 2>&1"); 
 		system("xdsh $confkeys{$mn} \"zypper -n install mysql-client libmysqlclient_r15  libqt4-sql-mysql libmysqlclient15 perl-DBD-mysql mysql unixODBC\" >/dev/null 2>&1"); 
 		system("xdsh $confkeys{$mn} \"source /etc/profile.d/xcat.sh\" >/dev/null 2>&1");
-		if($mn =~ /slesx/){
+	        if($mn =~ /slesLE/){
+                    system ("xdsh  $confkeys{$mn} \"zypper -n install perl-Net-DNS-0.80-1.ppc64le\">/dev/null 2>&1");
+                }
+         	if($mn =~ /slesx/){
 		    system("xdsh $confkeys{$mn} \"zypper -n install perl-Sys-Virt\" >/dev/null 2>&1");
 		}
 	}elsif($mn =~ /ubuntux/){
         system("xdsh $confkeys{$mn} \"/xcat-core/mklocalrepo.sh\" >/dev/null 2>&1");
         system("xdsh $confkeys{$mn} \"/xcat-dep/mklocalrepo.sh\" >/dev/null 2>&1");
-        system("xdsh $confkeys{$mn} \"wget -O - \"http://sourceforge.net/projects/xcat/files/ubuntu/apt.key/download\" | apt-key add -\" >/dev/null 2>&1");
         system("xdsh $confkeys{$mn} 'apt-get clean all' >/dev/null 2>&1");
         system("xdsh $confkeys{$mn} 'apt-get update' >/dev/null 2>&1");
         system("xdsh $confkeys{$mn} 'apt-get -y install xcat xCAT-test  > /var/log/xcat/install_xcat.log 2>&1' >/dev/null 2>&1");
-	}
+	}elsif($mn =~ /ubuntuEL/){
+        system("xdsh $confkeys{$mn} \"/xcat-core/mklocalrepo.sh\" >/dev/null 2>&1");
+        system("xdsh $confkeys{$mn} \"/xcat-dep/mklocalrepo.sh\" >/dev/null 2>&1");
+        system("xdsh $confkeys{$mn} 'apt-get clean all' >/dev/null 2>&1");
+        system("xdsh $confkeys{$mn} 'apt-get update' >/dev/null 2>&1");
+        system("xdsh $confkeys{$mn} 'apt-get -y install xcat xCAT-test  > /var/log/xcat/install_xcat.log 2>&1' >/dev/null 2>&1");
+
+        system("xdsh $confkeys{$mn} 'mkdir -p /install/ubuntu14.04.3/ppc64el/install/netboot '");
+        system("scp /install/ubuntu14.04.3/ppc64el/install/netboot/initrd.gz $confkeys{$mn}:/install/ubuntu14.04.3/ppc64el/install/netboot  ");
+        }
 
 	#check if MN is installed successful 
 	my $lsdefout = `ssh -t $confkeys{$mn} 'bash -l -i -c "lsdef -v"'`;
@@ -669,7 +710,7 @@ sub do_test {
 	my $diskless_installation_hierarchy_testcase="";
 	my $statelite_installation_hierarchy_testcase="";
 	my $batbundle="";
-	if($mn =~ /sles/ || $mn =~ /rh/){
+	if((($mn =~ /sles/) || ($mn =~ /rh/)) && ($mn !~ /E/)){
         $diskfull_installation_flat_testcase="reg_linux_diskfull_installation_flat";
         $diskless_installation_flat_testcase="reg_linux_diskless_installation_flat";
         $statelite_installation_flat_testcase="reg_linux_statelite_installation_flat";
@@ -685,13 +726,14 @@ sub do_test {
 		$diskfull_installation_flat_testcase="Ubuntu_full_installation_flat_x86_vm";
 		$diskless_installation_flat_testcase="Ubuntu_diskless_installation_flat_x86_vm";
 		$batbundle="x_ubuntu_cmd.bundle";
-	}elsif($mn =~ /ubuntupel/){
-		$diskfull_installation_flat_testcase="Ubuntu_full_installation_flat_p8le_vm";
-                $diskless_installation_flat_testcase="Ubuntu_diskless_installation_flat_p8le_vm";
-                $batbundle="p_ubunut.cmd.bundle";
-	}
-	
-    if($mn !~ /ubuntu/){
+        }elsif($mn =~ /E/){
+                $diskfull_installation_flat_testcase="Full_installation_flat_p8_le";
+                $diskless_installation_flat_testcase="Diskless_installation_flat_p8_le";
+                $batbundle="le_rhels_cmd.bundle" if($mn =~ /rhLE/);
+                $batbundle="le_sles_cmd.bundle" if($mn =~ /slesLE/);
+                $batbundle="le_ubuntu_cmd.bundle" if($mn =~ /ubuntuEL/);
+        }	
+        if(($mn !~ /ubuntu/) && ($mn !~ /E/)){
 		#diskfull installation in flat mode test
 		send_msg(2, "[$mn->$confkeys{$mn}][do_test] doing diskfull installation test in flat mode in $mn.....");
 		system("xdsh $confkeys{$mn} \"xcattest -f /opt/xcat/share/xcat/tools/autotest/default.conf  -t $diskfull_installation_flat_testcase\" >/dev/null 2>&1");
@@ -729,10 +771,16 @@ sub do_test {
 		send_msg(2, "[$mn->$confkeys{$mn}][do_test] preparing xcat ball for installing SN in $mn.....");
 		my $os = $confkeys{$mn."os"};
 		my $arch = "ppc64";
-		$arch="x86_64" if($mn !~ /aix/ && $mn =~ /x/);
+	        if(($mn !~ /aix/) && ($mn =~ /x/)){
+                    $arch="x86_64";
+                }elsif($mn !~ /aix/ && $mn =~ /LE/){
+                    $arch="ppc64le";
+                }elsif($mn !~ /aix/ && $mn =~ /EL/){
+                    $arch="ppc64el";
+                }
 		my $xcatballpath = "/install/post/otherpkgs/$os/$arch/xcat";
-		$res = system("xdsh $confkeys{$mn} \"mkdir -p $xcatballpath/xcat-core && cp -r /xcat-core/build/* $xcatballpath/xcat-core && cp -r /xcat-dep $xcatballpath\"");
-		if ($res != 0){
+                $res = system("xdsh $confkeys{$mn} \"mkdir -p $xcatballpath/xcat-core && cp -r /xcat-core/* $xcatballpath/xcat-core && cp -r /xcat-dep $xcatballpath\"");		
+                if ($res != 0){
 			send_msg(0, "[$mn->$confkeys{$mn}][do_test] prepare xcat ball for installing SN in $mn failed");
 			return 1;
 		}
@@ -784,20 +832,20 @@ sub do_test {
 		send_msg(2, "[$mn->$confkeys{$mn}][do_test] do statelite installation test in hierarchy mode in $mn.....[done]");	
 		
     }else{
-		#diskfull installation in flat mode test
-		send_msg(2, "[$mn->$confkeys{$mn}][do_test] doing diskfull installation test in flat mode in $mn.....");
-		system("ssh -t $confkeys{$mn} 'exec bash -l -i -c \"xcattest -f /opt/xcat/share/xcat/tools/autotest/default.conf  -t $diskfull_installation_flat_testcase\"' >/dev/null 2>&1");
-		send_msg(2, "[$mn->$confkeys{$mn}][do_test] do diskfull installation test in flat mode in $mn.....[done]");
-
-		#commands bundle in flat mode test
-		send_msg(2, "[$mn->$confkeys{$mn}][do_test] doing all commands test in flat mode in $mn.....");
-		system("ssh -t $confkeys{$mn} 'exec bash -l -i -c \"xcattest -f /opt/xcat/share/xcat/tools/autotest/default.conf  -b $batbundle\"' >/dev/null 2>&1");
-		send_msg(2, "[$mn->$confkeys{$mn}][do_test] do all commands test in flat mode in $mn.....[done]");
-
 		#diskless installation in flat mode test		
 		send_msg(2, "[$mn->$confkeys{$mn}][do_test] doing diskless installation test in flat mode in $mn.....");
 		system("ssh -t $confkeys{$mn} 'exec bash -l -i -c \"xcattest -f /opt/xcat/share/xcat/tools/autotest/default.conf  -t $diskless_installation_flat_testcase\"' >/dev/null 2>&1");
 		send_msg(2, "[$mn->$confkeys{$mn}][do_test] do diskless installation test in flat mode in $mn.....[done]");
+
+                #diskfull installation in flat mode test
+                send_msg(2, "[$mn->$confkeys{$mn}][do_test] doing diskfull installation test in flat mode in $mn.....");
+                system("ssh -t $confkeys{$mn} 'exec bash -l -i -c \"xcattest -f /opt/xcat/share/xcat/tools/autotest/default.conf  -t $diskfull_installation_flat_testcase\"' >/dev/null 2>&1");
+                send_msg(2, "[$mn->$confkeys{$mn}][do_test] do diskfull installation test in flat mode in $mn.....[done]");
+
+                #commands bundle in flat mode test
+                send_msg(2, "[$mn->$confkeys{$mn}][do_test] doing all commands test in flat mode in $mn.....");
+                system("ssh -t $confkeys{$mn} 'exec bash -l -i -c \"xcattest -f /opt/xcat/share/xcat/tools/autotest/default.conf  -b $batbundle\"' >/dev/null 2>&1");
+                send_msg(2, "[$mn->$confkeys{$mn}][do_test] do all commands test in flat mode in $mn.....[done]");
 	}
 	
     send_msg(2, "[$mn->$confkeys{$mn}][install_xcat] run regression test in $mn finished");
@@ -846,12 +894,18 @@ sub creat_report{
  
     while(my($k,$v) = each %pidrecord){
         my $scenario="[".$confkeys{$k."os"};
-        if($k=~/p/){$scenario.="+PPC64] ";}else{$scenario.="+x86_64] ";}
+        if($k=~/p/){
+            $scenario.="+PPC64] ";
+            }elsif($k=~ /E/){
+            $scenario.="+PPC64LE] ";
+            }elsif($k=~/x/){
+            $scenario.="+x86_64] ";
+            }
         $mailreport .= "$scenario\n";
         my $batbundle="";
         my $totalcase=0;
 
- if($k=~ /sles/ || $k =~ /rh/){
+ if($k=~ /slesp/ || $k =~ /rhx/ || $k=~ /slesx/ || $k =~ /rhp/){
                 $batbundle="$xcatcoredir/xCAT-test/autotest/bundle/p_rhels_cmd.bundle" if($k =~ /rhp/);
                 $batbundle="$xcatcoredir/xCAT-test/autotest/bundle/x_rhels_cmd.bundle" if($k =~ /rhx/);
                 $batbundle="$xcatcoredir/xCAT-test/autotest/bundle/p_sles_cmd.bundle" if($k =~ /slesp/);
@@ -862,9 +916,11 @@ sub creat_report{
                 $batbundle="/$xcatcoredir/xCAT-test/autotest/bundle/x_ubuntu_cmd.bundle";
                 $totalcase=`cat $batbundle|wc -l`;
                 $totalcase+=2;
-                }elsif($k =~ /ubuntupel/){
-                $batbundle="$xcatcoredir/xCAT-test/autotest/bundle/p_ubunut.cmd.bundle";
-                $totalcase=`cat "$batbundle|wc -l`;
+                }elsif($k =~ /E/){
+                $batbundle="$xcatcoredir/xCAT-test/autotest/bundle/le_rhels_cmd.bundle" if($k =~ /rhLE/);
+                $batbundle="$xcatcoredir/xCAT-test/autotest/bundle/le_sles_cmd.bundle" if($k =~ /slesLE/);
+                $batbundle="$xcatcoredir/xCAT-test/autotest/bundle/le_ubuntu_cmd.bundle" if($k =~ /ubuntuEL/);
+                $totalcase=`cat $batbundle|wc -l`;
                 $totalcase+=2;
                 }
 
@@ -985,7 +1041,14 @@ $cnt =`cat  $mailfile |grep "Total"|grep "Failed"|wc -l`;
             #print "subdir-> $subdir\n";
 			
 			my $scenario="[".$confkeys{$subdir."os"};
-			if($subdir=~/p/){$scenario.="+PPC64] ";}else{$scenario.="+x86_64] ";}
+			if($subdir =~ /p/){
+                            $scenario.="+PPC64] ";
+                            }elsif($subdir =~ /x/){
+                            $scenario.="+x86_64] ";
+                            }elsif($subdir =~ /E/){
+                            $scenario.="+ppc64le] ";
+                         }
+
             my $separator .= "\n###############################################################\n";
             $separator .= "                    $scenario\n";
             $separator .= "###############################################################\n\n";
@@ -1294,49 +1357,49 @@ foreach my $m (keys %mns) {
         close CONTROLREAD;
 		my $res; 
       		
+       #######################################
+       # step 3. download xcat core
+       ########################################
+       send_msg(2, "[$m]step 3, Running down_xcat_core...............");
+       $res = down_xcat_core_build($m);
+          if ($res) {
+           syswrite MNWRITE,"REPORTFROM:$m->$mn: download xcat core for $mn failed\n";
+           exit 1;
+        }
+               send_msg(2, "[$m]step 3, Run down_xcat_core...............[OK]");
+        
         #######################################
-        # step 3. Install MNs,
+        # step 4. Install MNs,
         #######################################
-        send_msg(2, "[$m]step 3, Running mn_install...............");
+        send_msg(2, "[$m]step 4, Running mn_install...............");
         $res = mn_install($m);
         if ($res) {
             syswrite MNWRITE,"REPORTFROM:$m->$mn: install $mn failed\n";
             exit 1;
         }
-		send_msg(2, "[$m]step 3, Run mn_install...............[OK]");
+		send_msg(2, "[$m]step 4, Run mn_install...............[OK]");
         #######################################
-        # step 4. Down xcatdep to MNs
+        # step 5. Down xcatdep to MNs
         #######################################
-        send_msg(2, "[$m]step 4, Down xcatdep...............");
+        send_msg(2, "[$m]step 5, Down xcatdep...............");
         $depupdateflag = down_dep($m);
         if ($depupdateflag ==2){
-            send_msg(2, "[$m]step 4,  updated for xcat dep");
+            send_msg(2, "[$m]step 5,  updated for xcat dep");
         }else{
-           send_msg(2, "[$m]step 4, no update for xcat dep");
+           send_msg(2, "[$m]step 5, no update for xcat dep");
         }
         #######################################
-        # step 5. Copy code to MNs
+        # step 6. Copy code to MNs
         #######################################
-        send_msg(2, "[$m]step 5, Running copy_code...............");
+        send_msg(2, "[$m]step 6, Running copy_code...............");
         $res =  copy_code($m);
         if ($res) {
             syswrite MNWRITE,"REPORTFROM:$m->$mn: copy xcat source code to $mn failed\n";
             exit 1;
         }
-		send_msg(2, "[$m]step 5, Run copy_code...............[OK]");
+		send_msg(2, "[$m]step 6, Run copy_code...............[OK]");
  
-        #######################################
-        # step 6. Build xcat code in MNs
-        #######################################
-        send_msg(2, "[$m]step 6, Running build_xcat...............");
-        $res =  build_xcat($m);
-        if ($res) {
-            syswrite MNWRITE,"REPORTFROM:$m->$mn: build new xcat in $mn failed\n";
-            exit 1;
-        }
-		send_msg(2, "[$m]step 6, Run build_xcat...............[OK]");
-
-        #######################################
+        ########################################
         # step 7. Read xCAT MN's configuration
         #######################################
         send_msg(2, "[$m]step 7, Running install_xcat...............");