Autosave metrics.json checkpoint

metrics.json

@@ -23,6 +23,14 @@
             "ppl": 2097.6864,
             "kld": null,
             "vram": {}
+        },
+        "5.0bpw_h6": {
+            "bpw": "5.0",
+            "head_bpw": "6",
+            "branch": "5.0bpw_h6",
+            "ppl": 1995.7812,
+            "kld": null,
+            "vram": {}
         }
     }
 }