Add info on tensorboard

GTSRB/03-Tracking-and-visualizing.ipynb

@@ -302,9 +302,17 @@
     "## Step 5 - Prepare callbacks  \n",
     "We will add 2 callbacks :  \n",
     " - **TensorBoard**  \n",
-    "Training logs, which can be visualised with Tensorboard.  \n",
-    "`# tensorboard --logdir ./run/logs`  \n",
-    "IMPORTANT : Relaunch tensorboard on every run\n",
+    "  Training logs, which can be visualised using Tensorboard tool.  \n",
+    "  Launch a terminal directly through the Jupyter interface (click on Menu button "File -> New -> Terminal").\n"
+    "  CheGo to directory \n",
+    "  # cd \n",
+    "  Then launch \n",
+    "    - `# tensorboard_launch --logdir ./run/logs` if using a Gricad node\n",
+    "    - `# tensorboard --logdir ./run/logs` if using your own workstation\n",
+    "  The Tensorboard visualization is available through a browser at : \n",
+    "    - http://localhost:6007 (when running training using a Gricad node)\n",
+    "    - http://localhost:6006 (when running training using your own workstation)\n",
+    "  IMPORTANT : Relaunch tensorboard on every run\n",
     " - **Model backup**  \n",
     " It is possible to save the model each xx epoch or at each improvement.  \n",
     " The model can be saved completely or partially (weight).  \n",