diff --git a/.classpath b/.classpath
index e353bd8..5a214e2 100644
--- a/.classpath
+++ b/.classpath
@@ -7,7 +7,6 @@
 	<classpathentry kind="lib" path="lib/libsvm.jar"/>
 	<classpathentry kind="lib" path="lib/jzlib.jar"/>
 	<classpathentry kind="lib" path="lib/netty-all-5.0.0.Alpha2.jar" sourcepath="/home/yueming/Downloads/netty-5.0.0.Alpha2/jar/all-in-one/netty-all-5.0.0.Alpha2-sources.jar"/>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/java1.8.0_45"/>
-	<classpathentry combineaccessrules="false" kind="src" path="/Futureye_v2"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/Java8"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>
diff --git a/src/lambdacloud/core/Session.java b/src/lambdacloud/core/Session.java
index a9a4347..eb08efc 100644
--- a/src/lambdacloud/core/Session.java
+++ b/src/lambdacloud/core/Session.java
@@ -245,4 +245,31 @@ public double runLocal(Node root, Map<String, Double> dict) {
 		}
 		return root.func.apply(args);
 	}
+	
+	public CloudSD[] runSelect(Expr expr, Map<String, double[]> dict) {
+		GraphBuilder gb = new GraphBuilder(config);
+		Node n = gb.build(expr);
+		return runSelelct(n, dict);
+	}
+	
+	public CloudSD[] runSelect(Node root, Map<String, double[]> dict) {
+		double[] args = new double[root.args.size()];
+		
+		for(int i=0; i<root.args.size(); i++) {
+			Double d = dict.get(root.args.get(i).toString());
+			if(d == null) {
+				Node child = root.children.get(root.args.get(i).toString());
+				args[i] = runSimple(child, dict);
+			} else {
+				args[i] = d;
+			}
+		}
+		
+		CloudSD input = new CloudSD().init(args);
+		CloudSD output = new CloudSD();
+		root.cfunc.apply(output, input);
+		//Will block
+		output.fetch();
+		return output.getData(0);
+	}
 }
diff --git a/src/symjava/examples/Example6.java b/src/symjava/examples/Example6.java
index d45af24..a75e0d9 100644
--- a/src/symjava/examples/Example6.java
+++ b/src/symjava/examples/Example6.java
@@ -31,35 +31,36 @@
  */
 public class Example6 {
 	public static void main(String[] args) {
-//		Func u = new Func("u", x, y);
-//		Func v = new Func("v", x, y);
-//
-////		//Our PDE equation
-////		Eq pde = new Eq(0.5*dot(grad(u), grad(v)) + 0.1*u*v, (x*x+y*y)*v);
-////		//Read the mesh
-////		Mesh2D mesh = new Mesh2D("mesh1", x, y);
-////		mesh.readTriangleMesh("double_hex3.1.node", "double_hex3.1.ele");
-////		solve(pde, mesh, null, "double_hex3.1.dat");
-//
-//		//Another PDE equation with Dirichlet condition
-//		WeakForm wf = new WeakForm(dot(grad(u), grad(v)), (-2*(x*x+y*y)+36)*v, u, v);
-//		//Eq pde2 = new Eq(u*v, (-2*(x*x+y*y)+36)*v);
-//		Mesh2D mesh2 = new Mesh2D("mesh2");
-//		//mesh2.readGridGenMesh("patch_triangle.grd");
-//		mesh2.readGridGenMesh("triangle.grd");
-//		//Mark boundary nodes
-//		double eps = 0.01;
-//		for(Node n : mesh2.nodes) {
-//			//if(1-Math.abs(n.coords[0])<eps || 1-Math.abs(n.coords[1])<eps || Math.abs(n.coords[0])<eps || Math.abs(n.coords[1])<eps )
-//			if(Math.abs(3-Math.abs(n.coords[0]))<eps || Math.abs(3-Math.abs(n.coords[1]))<eps)
-//				n.setType(1);
-//		}
-//		Map<Integer, Double> diri = new HashMap<Integer, Double>();
-//		diri.put(1, 0.0);
-//		//solve(pde2, mesh2, diri, "patch_triangle.dat");
-//		solve(wf, mesh2, diri, "triangle.dat");
-//		solve2(mesh2, diri, "triangle_hardcode.dat");
-		peper_example();
+		Func u = new Func("u", x, y);
+		Func v = new Func("v", x, y);
+
+//		//Our PDE equation
+//		Eq pde = new Eq(0.5*dot(grad(u), grad(v)) + 0.1*u*v, (x*x+y*y)*v);
+//		//Read the mesh
+//		Mesh2D mesh = new Mesh2D("mesh1", x, y);
+//		mesh.readTriangleMesh("double_hex3.1.node", "double_hex3.1.ele");
+//		solve(pde, mesh, null, "double_hex3.1.dat");
+
+		//Another PDE equation with Dirichlet condition
+		////WeakForm wf = new WeakForm(dot(grad(u), grad(v)), (-2*(x*x+y*y)+36)*v, u, v);
+		//Eq pde2 = new Eq(u*v, (-2*(x*x+y*y)+36)*v);
+		Mesh2D mesh2 = new Mesh2D("mesh2");
+		//mesh2.readGridGenMesh("patch_triangle.grd");
+		mesh2.readGridGenMesh("triangle.grd");
+		//Mark boundary nodes
+		double eps = 0.01;
+		for(Node n : mesh2.nodes) {
+			//if(1-Math.abs(n.coords[0])<eps || 1-Math.abs(n.coords[1])<eps || Math.abs(n.coords[0])<eps || Math.abs(n.coords[1])<eps )
+			if(Math.abs(3-Math.abs(n.coords[0]))<eps || Math.abs(3-Math.abs(n.coords[1]))<eps)
+				n.setType(1);
+		}
+		Map<Integer, Double> diri = new HashMap<Integer, Double>();
+		diri.put(1, 0.0);
+		//solve(pde2, mesh2, diri, "patch_triangle.dat");
+		////solve(wf, mesh2, diri, "triangle.dat");
+		solve2(mesh2, diri, "triangle_hardcode.dat");
+
+		//peper_example();
 	}
 	
 	public static void peper_example() {
@@ -262,6 +263,9 @@ public static void solve2(Mesh2D mesh, Map<Integer, Double> dirichlet, String ou
 		List<Domain> eles = mesh.getSubDomains();
 		double[][] matA = new double[mesh.nodes.size()][mesh.nodes.size()];
 		double[] vecb = new double[mesh.nodes.size()];
+		
+		int NN = 10000*512/eles.size();
+		for(int ii=0; ii<NN; ii++)
 		for(Domain d : eles) {
 			Element e = (Element)d;
 			double[] coords = e.getNodeCoords();
diff --git a/src/symjava/examples/Example7.java b/src/symjava/examples/Example7.java
index f940909..d23a3d8 100644
--- a/src/symjava/examples/Example7.java
+++ b/src/symjava/examples/Example7.java
@@ -144,6 +144,8 @@ public static void solve(WeakForm pde, Map<Integer, Double> dirichlet, String ou
 		
 		List<Expr> addList = normalizeTerms(pde.lhs());
 		//Change of variables
+		System.out.println("Start change of variable...");
+		long begin = System.currentTimeMillis();
 		for(Expr term : addList) {
 			Integrate intTerm = (Integrate)term; // Integration term
 			//Integrate on the domain
@@ -206,9 +208,12 @@ public static void solve(WeakForm pde, Map<Integer, Double> dirichlet, String ou
 				}
 			}
 		}
+		System.out.println("Change of variable done! Time: "+(System.currentTimeMillis()-begin)+"ms");
 
 		//Generate bytecode for the integration
 		//You can save the class to some place for later use
+		System.out.println("Start generating bytecode...");
+		begin = System.currentTimeMillis();
 		NumInt lhsNInt[][] = new NumInt[shapeFuns.length][shapeFuns.length];
 		NumInt lhsNIntB[][] = new NumInt[shapeFunsB.length][shapeFunsB.length];
 		NumInt rhsNInt[] = new NumInt[shapeFuns.length];
@@ -223,10 +228,11 @@ public static void solve(WeakForm pde, Map<Integer, Double> dirichlet, String ou
 //				lhsNIntB[i][j] = new NumInt(lhsIntB[i][j]);
 //			}
 //		}
+		System.out.println("Bytecode gen done! Time: "+(System.currentTimeMillis()-begin)+"ms");
 
 		//Assemble the system
 		System.out.println("Start assemble the system...");
-		long begin = System.currentTimeMillis();
+		begin = System.currentTimeMillis();
 		double[][] matA = new double[mesh.nodes.size()][mesh.nodes.size()];
 		double[] vecb = new double[mesh.nodes.size()];
 		for(Domain d : mesh.getSubDomains()) {
diff --git a/src/symjava/symbolic/Table.java b/src/symjava/symbolic/Table.java
index a0ba3b9..7441b7a 100644
--- a/src/symjava/symbolic/Table.java
+++ b/src/symjava/symbolic/Table.java
@@ -3,15 +3,15 @@
 import symjava.symbolic.arity.NaryOp;
 
 /**
- * An expressions table is similar to the table of a relational database (RDBMS).
- * The expressions table itself is nothing but an array of expressions.
+ * An expression table is similar to the table of a relational database (RDBMS).
+ * The expression table itself is nothing but an array of expressions.
  * 
- * It will return an array of CloudSD when evaluating the expressions table.
+ * It will return an array of CloudSD when evaluating the expression table.
  * Each element of the returned CloudSD corresponds to a column of a RDBMS table.
  * 
  * The main purpose of an expression table is to 'bind' the values of expressions
- * together into a table. The length of values must be the same for each expression
- * in the expressions table.
+ * together into a table. The length of the values must be the same for each expression
+ * in the expression table.
  * 
  */
 public class Table extends NaryOp {