diff --git a/xCAT-server/lib/xcat/plugins/pxe.pm b/xCAT-server/lib/xcat/plugins/pxe.pm
index bab1565c5..92f004fbe 100644
--- a/xCAT-server/lib/xcat/plugins/pxe.pm
+++ b/xCAT-server/lib/xcat/plugins/pxe.pm
@@ -346,7 +346,9 @@ sub preprocess_request {
       if ($req->{inittime}->[0]) {
           return [$req];
       }
-      return xCAT::Scope->get_broadcast_scope($req,@_);
+      if (@CN >0 ) { # there are computenodes then run on all servicenodes
+        return xCAT::Scope->get_broadcast_scope($req,@_);
+      }
    }
    return [$req];
 }
diff --git a/xCAT-server/lib/xcat/plugins/vsmppxe.pm b/xCAT-server/lib/xcat/plugins/vsmppxe.pm
index f40655eb5..9637b70d8 100644
--- a/xCAT-server/lib/xcat/plugins/vsmppxe.pm
+++ b/xCAT-server/lib/xcat/plugins/vsmppxe.pm
@@ -276,7 +276,9 @@ sub preprocess_request {
       if ($req->{inittime}->[0]) {
           return [$req];
       }
-      return xCAT::Scope->get_broadcast_scope($req,@_);
+      if (@CN >0 ) { # if there are compute nodes then broadcast to any servicenodes 
+        return xCAT::Scope->get_broadcast_scope($req,@_);
+      }
    }
    return [$req];
 }
diff --git a/xCAT-server/lib/xcat/plugins/xnba.pm b/xCAT-server/lib/xcat/plugins/xnba.pm
index 65ed1298c..651eb2bad 100644
--- a/xCAT-server/lib/xcat/plugins/xnba.pm
+++ b/xCAT-server/lib/xcat/plugins/xnba.pm
@@ -366,7 +366,9 @@ sub preprocess_request {
       if ($req->{inittime}->[0]) {
           return [$req];
       }
-      return xCAT::Scope->get_broadcast_scope($req,@_);
+      if (@CN >0 ) { # there are computenodes then run on all servicenodes 
+        return xCAT::Scope->get_broadcast_scope($req,@_);
+      }
    }
    return [$req];
 }
diff --git a/xCAT-server/lib/xcat/plugins/yaboot.pm b/xCAT-server/lib/xcat/plugins/yaboot.pm
index 2988a926a..5f56a39c4 100644
--- a/xCAT-server/lib/xcat/plugins/yaboot.pm
+++ b/xCAT-server/lib/xcat/plugins/yaboot.pm
@@ -397,7 +397,9 @@ sub preprocess_request {
       if ($req->{inittime}->[0]) {
           return [$req];
       }
-      return xCAT::Scope->get_broadcast_scope($req,@_);
+      if (@CN >0 ) { # if compute nodes broadcast to all servicenodes 
+       return xCAT::Scope->get_broadcast_scope($req,@_);
+      }
    }
    return [$req];
 }