diff --git a/benchmarks/3d/Cube-Attr-01.geo b/benchmarks/3d/Cube-Attr-01.geo
index ee891bbc6c30f3cb28390687766cccb42303461b..84ffa08c643367fb263e8cc265a13a71fd43d2b7 100644
--- a/benchmarks/3d/Cube-Attr-01.geo
+++ b/benchmarks/3d/Cube-Attr-01.geo
@@ -1,32 +1,33 @@
-/*****************************                  
-cube meshed uniformly                  
-*****************************/                  
-Point(1) = {0.0,0.0,0.0,.2};                          
-Point(2) = {1,0.0,0.0,.2};                          
-Point(3) = {1,1,0.0,.2};                          
-Point(4) = {0,1,0.0,.2};                          
-Line(1) = {4,3};                          
-Line(2) = {3,2};                          
-Line(3) = {2,1};                          
-Line(4) = {1,4};                          
-Line Loop(5) = {2,3,4,1};                          
-Plane Surface(6) = {5};                          
-Extrude Surface (6, {0,0.0,1});                          
+
+Options{
+  Mesh{
+    Algorithm = 2 ;
+  }
+}
+
+Point(1) = {0.0,0.0,0.0,.2};
+Point(2) = {1,0.0,0.0,.2};
+Point(3) = {1,1,0.0,.2};
+Point(4) = {0,1,0.0,.2};
+Line(1) = {4,3};
+Line(2) = {3,2};
+Line(3) = {2,1};
+Line(4) = {1,4};
+Line Loop(5) = {2,3,4,1};
+Plane Surface(6) = {5};
+Extrude Surface {6, {0,0.0,1}};
                      
-Surface Loop(29) = {23,6,15,19,28,27};                    
-Complex Volume(30) = {29};                    
+Surface Loop(29) = {23,6,15,19,28,27};
+Complex Volume(30) = {29};
                 
-Attractor Point(0.05,0.05,2) = {1,4,5,6,10,14};                                                                                               
-/*    
-Point(15) = {0,.5,.5,1.0};      
-Attractor Point(0.05,0.05,2) = {15};                                                                                               
-*/    
-Point(16) = {-.5,.5,.5,1.0};      
-Point(17) = {1.5,.5,.8,1.0};      
-Line(30) = {16,17};      
-Attractor Line(0.1,0.1,2) = {30};                                                                                               
+Attractor Point{1,4,5,6,10,14} = {0.05,0.05,2} ;
+
+Point(16) = {-.5,.5,.5,1.0};
+Point(17) = {1.5,.5,.8,1.0};
+Line(30) = {16,17};
+Attractor Line{30} = {0.1,0.1,2};
 
-Point(18) = {-.2,.7,1.3,1.0};      
-Point(19) = {1.22,.1,-.8,1.0};      
-Line(31) = {18,19};      
-Attractor Line(0.01,0.01,2) = {31};                                                                                               
+Point(18) = {-.2,.7,1.3,1.0};
+Point(19) = {1.22,.1,-.8,1.0};
+Line(31) = {18,19};
+Attractor Line{31} = {0.01,0.01,2};