[s2s] fix lockfile and peg distillation constants (#7545)

examples/seq2seq/make_student.py

@@ -32,7 +32,7 @@ LAYERS_TO_COPY = {
     },
     16: {  # maps  num layers in student -> which teacher layers to copy
         1: [0],
-        2: [0, 8],
+        2: [0, 15],
         3: [0, 8, 15],
         4: [0, 5, 10, 15],
         6: [0, 3, 6, 9, 12, 15],

examples/seq2seq/sentence_splitter.py

@@ -11,7 +11,7 @@ except (ImportError, ModuleNotFoundError):
     NLTK_AVAILABLE = False
 
 if NLTK_AVAILABLE:
-    with FileLock("a_random_string") as lock:
+    with FileLock(".lock") as lock:
         nltk.download("punkt", quiet=True)