Add questions to TSP and PDEs notebooks

notebooks/tsp.ipynb

@@ -38,10 +38,21 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "id": "7e93809a",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "tsp_check_4 (generic function with 1 method)"
+      ]
+     },
+     "execution_count": 1,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "using Printf\n",
     "function answer_checker(answer,solution)\n",
@@ -53,7 +64,8 @@
     "end\n",
     "tsp_check_1(answer) = answer_checker(answer, 16)\n",
     "tsp_check_2(answer) = answer_checker(answer, 2)\n",
-    "tsp_check_3(answer) = answer_checker(answer, \"d\")"
+    "tsp_check_3(answer) = answer_checker(answer, \"d\")\n",
+    "tsp_check_4(answer) = answer_checker(answer, \"a\")"
    ]
   },
   {
@@ -810,6 +822,40 @@
     "This avoids the performance issues of the previous approach: the workers are not idle since they get new work every time they finish a job. To avoid the search overhead, it is also important that the workers communicate the minimum distance each time they update their local minimum distance. "
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "81219a27",
+   "metadata": {},
+   "source": [
+    "<div class=\"alert alert-block alert-success\">\n",
+    "    <b>Question:</b> To find the right <i> maxhops </i> level is a tradeoff between...\n",
+    "</div>\n",
+    " \n",
+    "    a) Communication overhead (large maxhops) and load imbalance (small maxhops). \n",
+    "    b) Search overhead (large maxhops) and load imbalance (small maxhops). \n",
+    "    c) the number of workers (large maxhops) and the job size (small maxhops). \n",
+    "    d) buffer for the job queue (large maxhops) and idle time of the coordinator process (small maxhops)."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "id": "0cf1ec88",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "It's not correct. Keep trying! 💪\n"
+     ]
+    }
+   ],
+   "source": [
+    "answer=\"x\" #Replace x with a,b,c, or d\n",
+    "tsp_check_4(answer)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "5e4fdbe1",
@@ -1157,12 +1203,16 @@
    ]
   },
   {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "edbea7ac",
+   "cell_type": "markdown",
+   "id": "c789dc7a",
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "source": [
+    "# License\n",
+    "\n",
+    "\n",
+    "\n",
+    "This notebook is part of the course [Programming Large Scale Parallel Systems](https://www.francescverdugo.com/XM_40017) at Vrije Universiteit Amsterdam and may be used under a [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) license."
+   ]
   }
  ],
  "metadata": {