Remove any reference to Colab in examples

ami-iit · May 15, 2024 · 13ec38e · 13ec38e
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diff --git a/examples/PD_controller.ipynb b/examples/PD_controller.ipynb
@@ -6,10 +6,6 @@
    "source": [
     "# `JAXsim` Showcase: PD Controller\n",
     "\n",
-    "<a target=\"_blank\" href=\"https://colab.research.google.com/github/ami-iit/jaxsim/blob/main/examples/PD_controller.ipynb\">\n",
-    "  <img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/>\n",
-    "</a>\n",
-    "\n",
     "First, we install the necessary packages and import them."
    ]
   },
@@ -23,14 +19,6 @@
     "from IPython.display import clear_output, HTML, display\n",
     "import sys\n",
     "\n",
-    "IS_COLAB = \"google.colab\" in sys.modules\n",
-    "\n",
-    "# Install JAX and Gazebo\n",
-    "if IS_COLAB:\n",
-    "    !{sys.executable} -m pip install -U -q jaxsim\n",
-    "    !apt -qq update && apt install -qq --no-install-recommends gazebo\n",
-    "    clear_output()\n",
-    "\n",
     "import jax\n",
     "import jax.numpy as jnp\n",
     "from jaxsim import logging\n",
@@ -141,35 +129,6 @@
     "from jaxsim.mujoco.loaders import UrdfToMjcf\n",
     "\n",
     "\n",
-    "if IS_COLAB:\n",
-    "    if subprocess.run(\"ffmpeg -version\", shell=True).returncode:\n",
-    "        !command -v ffmpeg >/dev/null || (apt update && apt install -y ffmpeg)\n",
-    "        clear_output()\n",
-    "\n",
-    "    if subprocess.run(\"nvidia-smi\").returncode:\n",
-    "        raise RuntimeError(\n",
-    "            \"Cannot communicate with GPU. \"\n",
-    "            \"Make sure you are using a GPU Colab runtime. \"\n",
-    "            \"Go to the Runtime menu and select Choose runtime type.\"\n",
-    "        )\n",
-    "\n",
-    "    # Add an ICD config so that glvnd can pick up the Nvidia EGL driver.\n",
-    "    # This is usually installed as part of an Nvidia driver package, but the Colab\n",
-    "    # kernel doesn't install its driver via APT, and as a result the ICD is missing.\n",
-    "    # (https://github.com/NVIDIA/libglvnd/blob/master/src/EGL/icd_enumeration.md)\n",
-    "    NVIDIA_ICD_CONFIG_PATH = \"/usr/share/glvnd/egl_vendor.d/10_nvidia.json\"\n",
-    "    if not os.path.exists(NVIDIA_ICD_CONFIG_PATH):\n",
-    "        with open(NVIDIA_ICD_CONFIG_PATH, \"w\") as f:\n",
-    "            f.write(\n",
-    "                \"\"\"{\n",
-    "      \"file_format_version\" : \"1.0.0\",\n",
-    "      \"ICD\" : {\n",
-    "         \"library_path\" : \"libEGL_nvidia.so.0\"\n",
-    "     }\n",
-    "  }\n",
-    "  \"\"\"\n",
-    "            )\n",
-    "\n",
     "%env MUJOCO_GL=egl\n",
     "\n",
     "try:\n",

diff --git a/examples/Parallel_computing.ipynb b/examples/Parallel_computing.ipynb
@@ -4,11 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# `JAXsim` Showcase: Parallel Simulation of a free-falling body\n",
-    "\n",
-    "<a target=\"_blank\" href=\"https://colab.research.google.com/github/ami-iit/jaxsim/blob/main/examples/Parallel_computing.ipynb\">\n",
-    "  <img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/>\n",
-    "</a>"
+    "# `JAXsim` Showcase: Parallel Simulation of a free-falling body"
    ]
   },
   {
@@ -29,16 +25,10 @@
     "\n",
     "from IPython.display import HTML, clear_output, display\n",
     "\n",
-    "IS_COLAB = \"google.colab\" in sys.modules\n",
-    "\n",
     "# Install JAX and Gazebo\n",
-    "if IS_COLAB:\n",
-    "    !{sys.executable} -m pip install -U -q jaxsim\n",
-    "    !apt -qq update && apt install -qq --no-install-recommends gazebo\n",
-    "    clear_output()\n",
-    "else:\n",
-    "    # Set environment variable to avoid GPU out of memory errors\n",
-    "    %env XLA_PYTHON_CLIENT_MEM_PREALLOCATE=false\n",
+    "\n",
+    "# Set environment variable to avoid GPU out of memory errors\n",
+    "%env XLA_PYTHON_CLIENT_MEM_PREALLOCATE=false\n",
     "\n",
     "import time\n",
     "from typing import Dict, Tuple\n",

diff --git a/examples/README.md b/examples/README.md
@@ -4,23 +4,15 @@ This folder includes a Jupyter Notebook demonstrating the practical usage of JAX
 
 ### Examples
 
-- [PD_controller](https://colab.research.google.com/github/ami-iit/jaxsim/blob/main/examples/PD_controller.ipynb) - A simple example demonstrating the use of JAXsim to simulate a PD controller with gravity compensation for a 2-DOF cartpole.
-- [Parallel_computing](https://colab.research.google.com/github/ami-iit/jaxsim/blob/main/examples/Parallel_computing.ipynb) - An example demonstrating how to simulate vectorized models in parallel using JAXsim.
+- [PD_controller](./PD_controller.ipynb) - A simple example demonstrating the use of JAXsim to simulate a PD controller with gravity compensation for a 2-DOF cartpole.
+- [Parallel_computing](./Parallel_computing.ipynb) - An example demonstrating how to simulate vectorized models in parallel using JAXsim.
 
 > [!TIP]
 > Stay tuned for more examples!
 
 ## Running the Examples
 
-To execute these examples utilizing JAXsim with hardware acceleration, there are a couple of options available:
-
-### Option 1: Google Colab (Recommended)
-
-The simplest way to run the examples is by accessing the provided Google Colab notebook link mentioned above. This will enable you to execute the examples in a hosted environment.
-
-### Option 2: Local Execution with `pixi`
-
-For local execution, follow these steps:
+To execute these examples utilizing JAXsim with hardware acceleration, you can use [pixi](https://pixi.sh) to run the examples in a local environment:
 
 1. **Install `pixi`:**