Upload scripts/verify_stage4_checkpoint.py with huggingface_hub

scripts/verify_stage4_checkpoint.py

@@ -48,6 +48,8 @@ def main():
     parser.add_argument("--implementation-fp", required=True)
     parser.add_argument("--tokens-per-step", type=int, default=16384)
     parser.add_argument("--target", type=int, default=50_000_000_000)
+    parser.add_argument("--dataset-tokens", type=int, default=997_885_340,
+                        help="total tokens in the training dataset (for epoch wrap check)")
     parser.add_argument("--out", type=Path)
     args = parser.parse_args()
 
@@ -96,8 +98,10 @@ def main():
         check("token_count_arithmetic", token_count == manifest["step"] * args.tokens_per_step,
               {"token_count": token_count, "step": manifest["step"], "per_step": args.tokens_per_step})
     cursor = payload.get("data_cursor") or {}
-    check("data_cursor_offset", cursor.get("offset_tokens") == token_count, cursor)
-    check("data_cursor_epoch", cursor.get("epoch") == 0, cursor)
+    expected_epoch = token_count // args.dataset_tokens if type(token_count) is int else 0
+    expected_offset = token_count % args.dataset_tokens if type(token_count) is int else 0
+    check("data_cursor_offset", cursor.get("offset_tokens") == expected_offset, cursor)
+    check("data_cursor_epoch", cursor.get("epoch") == expected_epoch, cursor)
 
     identity = payload.get("identity") or {}
     check("implementation_fingerprint", identity.get("implementation_fingerprint") == args.implementation_fp)