diff -r 000000000000 -r 6474c204b198 js/src/parjs-benchmarks/edges.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/parjs-benchmarks/edges.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,82 @@
+load(libdir + "util.js");
+
+var SobelX = [[-1.0,  0.0,  1.0],
+              [-2.0,  0.0,  2.0],
+              [-1.0,  0.0,  1.0]];
+var SobelY = [[ 1.0,  2.0,  1.0],
+              [ 0.0,  0.0,  0.0],
+              [-1.0, -2.0, -1.0]];
+
+function stripedImage(w, h) {
+  var resultArray = new Array(w * h);
+  for (var y = 0; y < h; y++) {
+    for (var x = 0; x < w; x++) {
+      resultArray[y*w + x] = (Math.abs(x%100-y%100) < 10) ? 32 : 0;
+    }
+  }
+  return resultArray;
+}
+
+function edgesSequentially(data, width, height) {
+  var data1 = new Array(width * height);
+  for (var y = 0; y < height; y++) {
+    for (var x = 0; x < width; x++) {
+      var total = compute(x, y);
+      data1[y*width + x] = total | 0;
+    }
+  }
+  return data1;
+
+  function compute(x, y) {
+      var totalX = 0;
+      var totalY = 0;
+
+      var offYMin = (y == 0 ? 0 : -1);
+      var offYMax = (y == height - 1 ? 0 : 1);
+      var offXMin = (x == 0 ? 0 : -1);
+      var offXMax = (x == width - 1 ? 0 : 1);
+
+      for (var offY = offYMin; offY <= offYMax; offY++) {
+        for (var offX = offXMin; offX <= offXMax; offX++) {
+          var e = data[(y + offY) * width + x + offX];
+          totalX += e * SobelX[offY + 1][offX + 1];
+          totalY += e * SobelY[offY + 1][offX + 1];
+        }
+      }
+
+    return (Math.abs(totalX) + Math.abs(totalY))/8.0 | 0;
+  }
+}
+
+function edgesParallel(data) {
+  var pa = new ParallelArray([Height, Width], function (y, x) {
+    var totalX = 0;
+    var totalY = 0;
+
+    var offYMin = (y == 0 ? 0 : -1);
+    var offYMax = (y == Height - 1 ? 0 : 1);
+    var offXMin = (x == 0 ? 0 : -1);
+    var offXMax = (x == Width - 1 ? 0 : 1);
+
+    for (var offY = offYMin; offY <= offYMax; offY++) {
+      for (var offX = offXMin; offX <= offXMax; offX++) {
+        var e = data.get(y + offY, x + offX);
+        totalX += e * SobelX[offY + 1][offX + 1];
+        totalY += e * SobelY[offY + 1][offX + 1];
+      }
+    }
+
+    return (Math.abs(totalX) + Math.abs(totalY))/8.0 | 0;
+  });
+  return pa.flatten();
+}
+
+var Width = 1024;
+var Height = 768;
+var ArrInput = stripedImage(Width, Height);
+var ParArrInput2D = new ParallelArray([Height, Width],
+                                      function (y, x) ArrInput[y*Width + x]);
+
+benchmark("EDGES", 2, DEFAULT_MEASURE * 20,
+          function() edgesSequentially(ArrInput, Width, Height),
+          function() edgesParallel(ParArrInput2D));