diff --git a/mix-object.ts b/mix-object.ts
index 084b002..1767b9b 100644
--- a/mix-object.ts
+++ b/mix-object.ts
@@ -7,9 +7,9 @@
  */
 
 import { binSearch } from "./algorithm";
-import { pop2, defaultSPEC, SPEC, Bench, mkBench } from "./spec";
+import { pop2, SPEC, Bench, mkBench, mkSPEC } from "./spec";
 import path from "path";
-import { FLANG, PREFIX, SYSROOT_PREFIX } from "./environment";
+import { FLANG, PREFIX, SW_AUTOVEC, SYSROOT_PREFIX } from "./environment";
 import { generalCommand, linkerCommand } from "./commands/compiler";
 import { runcpuOptions } from "./commands/spec";
 import { renderConfig } from "./spec";
@@ -63,12 +63,6 @@ function mkPop2Bench(spec: SPEC): Bench & Linkable {
 
 
 async function main() {
-    const spec = defaultSPEC;
-
-    // Path to SPEC2017 test suite.
-    spec.setenv();
-
-
     // Just use scalar vanilla version of grid, will it work?
     //
     // No, does not work.
@@ -77,42 +71,121 @@ async function main() {
     const length = pop2.objectNames.length;
 
 
-    const beforeHalf = [
-        // Empty: /home/lyc/workspace/sw-autovec/spec2017/result/CPU2017.664.fpspeed.refspeed.txt
+    const beforeHalfGrid = [
         // 0.336
+
+        // Scalar [0, 161): Error,
+        // /home/lyc/workspace/sw-autovec/spec2017/result/CPU2017.671.fpspeed.refspeed.txt
+        //                : /home/lyc/workspace/sw-autovec/spec2017/result/CPU2017.664.fpspeed.refspeed.txt
+        // Scalar [161, 322): Correct.
+
         false,
+        // Scalar [161, 241): Error,
+        // /home/lyc/workspace/sw-autovec/spec2017/result/CPU2017.672.fpspeed.refspeed.txt
+        // Scalar [241, 322): Error,
+        // /home/lyc/workspace/sw-autovec/spec2017-2/result/CPU2017.672.fpspeed.refspeed.rsf
+        // Vector [161, 241): Error,
+        // Vector [241, 322): Error,
+        // /home/lyc/workspace/sw-autovec/spec2017-2/result/CPU2017.673.fpspeed.refspeed.txt
+
+        false,
+        // Vector [241, 281): Error,
+        // /home/lyc/workspace/sw-autovec/spec2017/result/CPU2017.674.fpspeed.refspeed.txt
+        // Vector [281, 322): Correct.
+
+        true,
+        // Vector [241, 261): Error,
+        // /home/lyc/workspace/sw-autovec/spec2017/result/CPU2017.675.fpspeed.refspeed.rsf
+        // Vector [261, 281): Correct.
+
+        true,
+        // Vector [241, 251): Error,
+        // /home/lyc/workspace/sw-autovec/spec2017/result/CPU2017.676.fpspeed.refspeed.txt
+        // Vector [251, 261): Stopped.
+
+        true,
+        // Vector [241, 246): Error,
+        // /home/lyc/workspace/sw-autovec/spec2017/result/CPU2017.677.fpspeed.refspeed.rsf
     ];
 
-    const [vBegin, vHalf, vEnd] = binSearch(0, length, beforeHalf);
+
+    const beforeHalfNoGrid: boolean[] = [
+
+        false,
+
+        // Vector [161, 241): Error
+        // /home/lyc/workspace/sw-autovec/spec2017/result/CPU2017.679.
+        // Vector [241, 322): Unknown
+        true,
+
+        // Vector [161, 201): Unknown
+        // Vector [201, 241): Error
+        false,
+
+        // Vector [201, 221): Error
+        // /home/lyc/workspace/sw-autovec/spec2017/result/CPU2017.681
+        // Vector [221, 241): Unknown
+        true,
+
+        // Vector [201, 211): Error
+        // Vector [211, 221): Unknown
+        true,
+
+        // Vector [201, 206): Unknown
+        // Vector [206, 211): Error
+        false,
+
+        // Vector [206, 208): Error
+        // Vector [208, 211): ?
+        true,
+
+        // Vector [206, 207): ?
+        // !!! Vector [207, 208): Error
+    ];
+
+
+    const [vBegin, vHalf, vEnd] = binSearch(0, length, beforeHalfNoGrid);
 
 
     //  use scalar version if index is in this range.
-    const scalarRange = [
-        [0, length / 2],
-        [length / 2, length],
+    const vectorRange: number[][] = [
+        [0, length],
+        // [vBegin, vHalf],
+        // [vHalf, vEnd],
     ];
 
-    const useVectors = scalarRange.map(([a, b]) => ({
-        useVector: (_: string, index: number) => {
-            // If index is not in range [a, b), use the vector version.
-            return !(a <= index && index < b);
+    const specs = [
+        path.join(SW_AUTOVEC, "spec2017"),
+        path.join(SW_AUTOVEC, "spec2017-2")
+    ].map(mkSPEC);
+
+    const useVectors = vectorRange.map(([a, b], index) => ({
+        useVector: (name: string, index: number) => {
+            if (name === "grid.fppized.o")
+                return false;
+            if (index == 207) {
+                console.log(`${name} is a bad object!`);
+                return false;
+            }
+            // If index is in range [a, b), use the vector version.
+            return a <= index && index < b;
         },
         range: [a, b],
+        spec: specs[index],
     }));
 
-    // Linking each "useVector" instances in sequence
-    for (const { useVector: predicate, range } of useVectors) {
+    await Promise.all(useVectors.map(async ({ useVector, range, spec }) => {
         const buildPathObj = (build: string) => (objname: string) => path.join(spec.buildpath(pop2), build, objname);
         const vector = buildPathObj("build_vector");
         const scalar = buildPathObj("build_scalar_vanilla");
 
         const pop2Bench = mkPop2Bench(spec);
 
-        console.log(`Linking objects. Range in [${range[0]}, ${range[1]}) used scalar version. others are vector version.`);
+        console.log(`Linking objects. Range in [${range[0]}, ${range[1]}) used vector version. others are scalar version.`);
 
         await pop2Bench.link(names =>
             names.map((obj, index) =>
-                predicate(obj, index) ? vector(obj) : scalar(obj)));
+                useVector(obj, index) ? vector(obj) : scalar(obj)));
 
         const config = "clang-O2.cfg";
 
@@ -141,10 +214,8 @@ async function main() {
                     buildType: "nobuild",
                     outputFormat: ["text", "config"]
                 }),
-            ], { stdio: "inherit" });
-
-    }
-
+            ], { stdio: "inherit", env: spec.getEnvironment() });
+    }));
 }
 
 main();