diff options
Diffstat (limited to 'ethosu/vela/tflite_graph_optimiser.py')
| -rw-r--r-- | ethosu/vela/tflite_graph_optimiser.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/ethosu/vela/tflite_graph_optimiser.py b/ethosu/vela/tflite_graph_optimiser.py index 2469a700..e01433d0 100644 --- a/ethosu/vela/tflite_graph_optimiser.py +++ b/ethosu/vela/tflite_graph_optimiser.py @@ -1152,6 +1152,16 @@ def fixup_bias_tensors(op, arch, nng): return op +def fixup_asymmetric_weights(op, arch, nng): + if op.run_on_npu and (op.type.is_conv2d_op() or op.type.is_depthwise_conv2d_op()): + if op.ifm.dtype == DataType.int8: + if not np.all(op.weights.quantization.zero_point == 0): + print(f"Warning: {op.type} '{op.name}' has asymmetric weights, zero points have been adjusted.") + op.weights.quantization.zero_point *= 0 + + return op + + def convert_mean_to_depthwise_conv_or_avgpool(op, arch, nng): if op.type == Op.Mean and op.run_on_npu: keep_dims = op.attrs.get("keep_dims", False) @@ -1405,6 +1415,7 @@ def tflite_optimise_graph(nng, arch): reorder_depthwise_weights, fixup_resizebilinear, fixup_bias_tensors, + fixup_asymmetric_weights, convert_mul_max_to_abs_or_lrelu, convert_lrelu, convert_tanh_sigmoid_to_lut, |