Comment out the ray GPU resources (#99)

Author: RHRolun

8_distributed_training.ipynb

@@ -142,8 +142,8 @@
     "\n",
     "cluster = Cluster(ClusterConfiguration(\n",
     "    name=\"raycluster-cpu\",\n",
-    "    head_extended_resource_requests={'nvidia.com/gpu': 0},\n",
-    "    worker_extended_resource_requests={'nvidia.com/gpu': 0},\n",
+    "    # head_extended_resource_requests={'nvidia.com/gpu': 0}, # Commented out as we don't need GPUs for this example\n",
+    "    # worker_extended_resource_requests={'nvidia.com/gpu': 0},\n",
     "    num_workers=2,\n",
     "    worker_cpu_requests=1,\n",
     "    worker_cpu_limits=4,\n",