Subtlety...

SpiNNakerManchester · Jul 9, 2019 · 3caed43 · 3caed43
1 parent 821641f
commit 3caed43
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pacman/operations/routing_info_allocator_algorithms/malloc_based_routing_allocator/utils.py b/pacman/operations/routing_info_allocator_algorithms/malloc_based_routing_allocator/utils.py
@@ -16,7 +16,7 @@ def get_possible_masks(n_keys, mask_width=32, contiguous_keys=True):
     :rtype: iterable(int)
     """
     # Starting values
-    n_zeros = n_keys.bit_length()
+    n_zeros = (n_keys - 1).bit_length()
     assert n_zeros <= mask_width
     all_ones_mask = (1 << mask_width) - 1