diff options
Diffstat (limited to 'ethosu/vela/graph_optimiser.py')
| -rw-r--r-- | ethosu/vela/graph_optimiser.py | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/ethosu/vela/graph_optimiser.py b/ethosu/vela/graph_optimiser.py index 582924c4..3fe703e1 100644 --- a/ethosu/vela/graph_optimiser.py +++ b/ethosu/vela/graph_optimiser.py @@ -69,6 +69,16 @@ def rewrite_concat(tens, arch): tens.ops.append(new_op) assert tens.shape[axis] == offset + # If axis = 3, NHCWB16 can only be used in the output if all the concat_start's are a multiple of 16, + # as it is only then the address offset for the ofm, for all operations, will be 16 byte aligned + # For other values of axis the address offsets will be 16 byte aligned, as they are all based on c = 0 + # and those addresses are always 16 byte aligned due to the NHCWB16 format. + if axis == 3: + for op in tens.ops: + if op.attrs["concat_start"] % 16 != 0: + tens.avoid_NHCWB16 = True + break + return tens |