Autosave metrics.json checkpoint

metrics.json

@@ -31,6 +31,14 @@
             "ppl": 1995.7812,
             "kld": null,
             "vram": {}
+        },
+        "6.0bpw_h6": {
+            "bpw": "6.0",
+            "head_bpw": "6",
+            "branch": "6.0bpw_h6",
+            "ppl": 1995.3135,
+            "kld": null,
+            "vram": {}
         }
     }
 }