diff --git a/3-Optimizing_POWER/Handson/.master/HandsOnPerformanceOptimization-solution.ipynb b/3-Optimizing_POWER/Handson/.master/HandsOnPerformanceOptimization-solution.ipynb
index b90620320230340b5ccd9ad9e6805a96ef0930ab..47e82dada1532509177865aa0a68d910b1619da2 100644
--- a/3-Optimizing_POWER/Handson/.master/HandsOnPerformanceOptimization-solution.ipynb
+++ b/3-Optimizing_POWER/Handson/.master/HandsOnPerformanceOptimization-solution.ipynb
@@ -1423,7 +1423,7 @@
    ],
    "source": [
     "!make CC=gcc -B poisson2d_pref\n",
-    "!objdump -lSd ./poisson2d_pref > poisson2d.dis"
+    "!objdump -lSd ./poisson2d > poisson2d.dis"
    ]
   },
   {
diff --git a/3-Optimizing_POWER/Handson/.master/HandsOnPerformanceOptimization-task.ipynb b/3-Optimizing_POWER/Handson/.master/HandsOnPerformanceOptimization-task.ipynb
index 8450e3eb9625fa3470948e069bc028af204ef5a8..b4acabea605bf350a31077671c5a2c643bc9e450 100644
--- a/3-Optimizing_POWER/Handson/.master/HandsOnPerformanceOptimization-task.ipynb
+++ b/3-Optimizing_POWER/Handson/.master/HandsOnPerformanceOptimization-task.ipynb
@@ -1404,7 +1404,7 @@
    ],
    "source": [
     "!make CC=gcc -B poisson2d_pref\n",
-    "!objdump -lSd ./poisson2d_pref > poisson2d.dis"
+    "!objdump -lSd ./poisson2d > poisson2d.dis"
    ]
   },
   {
diff --git a/3-Optimizing_POWER/Handson/.master/HandsOnPerformanceOptimization.ipynb b/3-Optimizing_POWER/Handson/.master/HandsOnPerformanceOptimization.ipynb
index 2e3f577da788e3443fa257088ab6912924d0b1f8..ca70512313bb1aae3e5f117e01c4ef51a752d700 100644
--- a/3-Optimizing_POWER/Handson/.master/HandsOnPerformanceOptimization.ipynb
+++ b/3-Optimizing_POWER/Handson/.master/HandsOnPerformanceOptimization.ipynb
@@ -1423,7 +1423,7 @@
    ],
    "source": [
     "!make CC=gcc -B poisson2d_pref\n",
-    "!objdump -lSd ./poisson2d_pref > poisson2d.dis"
+    "!objdump -lSd ./poisson2d > poisson2d.dis"
    ]
   },
   {
diff --git a/3-Optimizing_POWER/Handson/HandsOnPerformanceOptimization.html b/3-Optimizing_POWER/Handson/HandsOnPerformanceOptimization.html
index 43cea080bc72f3e50468d5d197c1aef210c2d2c9..66324ee630736ae0e2cf4efcec2bc2fe2e6dc49b 100644
--- a/3-Optimizing_POWER/Handson/HandsOnPerformanceOptimization.html
+++ b/3-Optimizing_POWER/Handson/HandsOnPerformanceOptimization.html
@@ -13672,7 +13672,7 @@ At what optimization levels does the compiler generate software prefetching inst
 <div class="inner_cell">
     <div class="input_area">
 <div class=" highlight hl-ipython3"><pre><span></span><span class="o">!</span>make <span class="nv">CC</span><span class="o">=</span>gcc -B poisson2d_pref
-<span class="o">!</span>objdump -lSd ./poisson2d_pref &gt; poisson2d.dis
+<span class="o">!</span>objdump -lSd ./poisson2d &gt; poisson2d.dis
 </pre></div>
 
     </div>
diff --git a/3-Optimizing_POWER/Handson/HandsOnPerformanceOptimization.ipynb b/3-Optimizing_POWER/Handson/HandsOnPerformanceOptimization.ipynb
index 73e6c052c436f7ab8ca5c14afed8eade4b3416a4..c744a731f1e5bc7d0f699df788c86dbdee7ecbda 100644
--- a/3-Optimizing_POWER/Handson/HandsOnPerformanceOptimization.ipynb
+++ b/3-Optimizing_POWER/Handson/HandsOnPerformanceOptimization.ipynb
@@ -545,7 +545,7 @@
    "outputs": [],
    "source": [
     "!make CC=gcc -B poisson2d_pref\n",
-    "!objdump -lSd ./poisson2d_pref > poisson2d.dis"
+    "!objdump -lSd ./poisson2d > poisson2d.dis"
    ]
   },
   {
diff --git a/3-Optimizing_POWER/Handson/HandsOnPerformanceOptimization.pdf b/3-Optimizing_POWER/Handson/HandsOnPerformanceOptimization.pdf
index b985f1a32ee25f6b774c73fdde89f4345f627b14..ade911247410f84f739c18fac98a1509b4529ffb 100644
Binary files a/3-Optimizing_POWER/Handson/HandsOnPerformanceOptimization.pdf and b/3-Optimizing_POWER/Handson/HandsOnPerformanceOptimization.pdf differ
diff --git a/3-Optimizing_POWER/Handson/Solution-Notebook/HandsOnPerformanceOptimization.html b/3-Optimizing_POWER/Handson/Solution-Notebook/HandsOnPerformanceOptimization.html
index 3ac2013d140cf62a33e745d13d149dd465df12b0..b4a1c1b991f70135c700fa2b49eb876076324e50 100644
--- a/3-Optimizing_POWER/Handson/Solution-Notebook/HandsOnPerformanceOptimization.html
+++ b/3-Optimizing_POWER/Handson/Solution-Notebook/HandsOnPerformanceOptimization.html
@@ -14738,7 +14738,7 @@ At what optimization levels does the compiler generate software prefetching inst
 <div class="inner_cell">
     <div class="input_area">
 <div class=" highlight hl-ipython3"><pre><span></span><span class="o">!</span>make <span class="nv">CC</span><span class="o">=</span>gcc -B poisson2d_pref
-<span class="o">!</span>objdump -lSd ./poisson2d_pref &gt; poisson2d.dis
+<span class="o">!</span>objdump -lSd ./poisson2d &gt; poisson2d.dis
 </pre></div>
 
     </div>
diff --git a/3-Optimizing_POWER/Handson/Solution-Notebook/HandsOnPerformanceOptimization.ipynb b/3-Optimizing_POWER/Handson/Solution-Notebook/HandsOnPerformanceOptimization.ipynb
index b90620320230340b5ccd9ad9e6805a96ef0930ab..47e82dada1532509177865aa0a68d910b1619da2 100644
--- a/3-Optimizing_POWER/Handson/Solution-Notebook/HandsOnPerformanceOptimization.ipynb
+++ b/3-Optimizing_POWER/Handson/Solution-Notebook/HandsOnPerformanceOptimization.ipynb
@@ -1423,7 +1423,7 @@
    ],
    "source": [
     "!make CC=gcc -B poisson2d_pref\n",
-    "!objdump -lSd ./poisson2d_pref > poisson2d.dis"
+    "!objdump -lSd ./poisson2d > poisson2d.dis"
    ]
   },
   {
diff --git a/3-Optimizing_POWER/Handson/Solution-Notebook/HandsOnPerformanceOptimization.pdf b/3-Optimizing_POWER/Handson/Solution-Notebook/HandsOnPerformanceOptimization.pdf
index 6c0303d2c9cf446d87798bc9fda314115b578735..9fa1da029eac06849aff30500441861dce79c7a6 100644
Binary files a/3-Optimizing_POWER/Handson/Solution-Notebook/HandsOnPerformanceOptimization.pdf and b/3-Optimizing_POWER/Handson/Solution-Notebook/HandsOnPerformanceOptimization.pdf differ