Create gpt2.json

inference-cache-config/gpt2.json

@@ -0,0 +1,16 @@
+{
+    "openai-community/gpt2": [
+    {
+      "batch_size": 1,
+      "sequence_length": 1024,
+      "num_cores": 1,
+      "auto_cast_type": "fp16"
+    },
+    {
+      "batch_size": 16,
+      "sequence_length": 1024,
+      "num_cores": 1,
+      "auto_cast_type": "fp16"
+    }
+  ]
+}