Improve docs

src/gt4py/next/program_processors/runners/gtfn.py

@@ -145,10 +145,12 @@ class FileCache(diskcache.Cache):
     This class extends `diskcache.Cache` to ensure the cache is properly
     - opened when accessed by multiple processes using a file lock. This guards the creating of the
     cache object, which has been reported to cause `sqlite3.OperationalError: database is locked`
-    errors and slow startup times when multiple processes access the cache concurrently. While
-    this issue occurred frequently and was observed to be fixed on distributed file systems, the
-    lock does not guarantee correct behavior in particular for the accesses to the cache (beyond
-    opening. See #1745 for more details.
+    errors and slow startup times when multiple processes access the cache concurrently. While this
+    issue occurred frequently and was observed to be fixed on distributed file systems, the lock
+    does not guarantee correct behavior in particular for accesses to the cache (beyond opening)
+    since the underlying SQLite database is unreliable when stored on an NFS based file system.
+    It does however ensure correctness off concurrent cache accesses on a local file system. See
+    #1745 for more details.
     - closed upon deletion, i.e. it ensures that any resources associated with the cache are
     properly released when the instance is garbage collected.
     """