diff options
Diffstat (limited to 'ethosu/vela/weight_compressor.py')
-rw-r--r-- | ethosu/vela/weight_compressor.py | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/ethosu/vela/weight_compressor.py b/ethosu/vela/weight_compressor.py index a258be41..e4779bf5 100644 --- a/ethosu/vela/weight_compressor.py +++ b/ethosu/vela/weight_compressor.py @@ -250,7 +250,7 @@ def _get_output_quantization(op): return quant -def _prepare_scale_and_bias(arch, tens, rescale_for_faf, explicit_scaling): +def _prepare_scale_and_bias(arch, tens, explicit_scaling): assert tens.purpose in [TensorPurpose.FeatureMap, TensorPurpose.FSBias] assert tens.format == TensorFormat.NHWC # the connected operator should expect a bias input unless it is a FullyConnected @@ -283,23 +283,14 @@ def _prepare_scale_and_bias(arch, tens, rescale_for_faf, explicit_scaling): # uses double during scaling calculations # TensorFlow Lite casts the scales slightly differently for uint8 and int8 as well as # for FullyConnected operators - if not rescale_for_faf: - if ifm_dtype == DataType.uint8 or first_consumer_op.original_type == Op.FullyConnected: - scales = [np.double(ifm_scale * weight_scale) / np.double(ofm_scale) for weight_scale in weight_scales] - elif ifm_dtype == DataType.int8 or ifm_dtype == DataType.int16: - scales = [ - (np.double(ifm_scale) * np.double(weight_scale)) / np.double(ofm_scale) - for weight_scale in weight_scales - ] - else: - raise UnsupportedFeatureError(f"Compression of {ifm_dtype} is not implemented; Tensor: '{tens.name}'") + if ifm_dtype == DataType.uint8 or first_consumer_op.original_type == Op.FullyConnected: + scales = [np.double(ifm_scale * weight_scale) / np.double(ofm_scale) for weight_scale in weight_scales] + elif ifm_dtype == DataType.int8 or ifm_dtype == DataType.int16: + scales = [ + (np.double(ifm_scale) * np.double(weight_scale)) / np.double(ofm_scale) for weight_scale in weight_scales + ] else: - if ifm_dtype == DataType.uint8: - scales = [np.double(ifm_scale * weight_scale * 0x3000) for weight_scale in weight_scales] - elif ifm_dtype == DataType.int8 or ifm_dtype == DataType.int16: - scales = [(np.double(ifm_scale * 0x3000) * np.double(weight_scale)) for weight_scale in weight_scales] - else: - raise UnsupportedFeatureError(f"Compression of {ifm_dtype} is not implemented; Tensor: '{tens.name}'") + raise UnsupportedFeatureError(f"Compression of {ifm_dtype} is not implemented; Tensor: '{tens.name}'") if explicit_scaling: assert len(explicit_scaling.shift) == len(explicit_scaling.multiplier) @@ -326,7 +317,7 @@ def _prepare_scale_and_bias(arch, tens, rescale_for_faf, explicit_scaling): def encode_weight_and_scale_tensor( - arch, op, weight_tens, scale_tens, kernel, block_config, depth_offsets, rescale_for_faf=False + arch, op, weight_tens, scale_tens, kernel, block_config, depth_offsets ) -> Tuple[Optional[NpuWeightTensor], Optional[NpuWeightTensor]]: npu_block_type = op.type.npu_block_type @@ -407,7 +398,7 @@ def encode_weight_and_scale_tensor( # Bias & scale if do_scales: - quantised_scales, biases = _prepare_scale_and_bias(arch, scale_tens, rescale_for_faf, op.explicit_scaling) + quantised_scales, biases = _prepare_scale_and_bias(arch, scale_tens, op.explicit_scaling) scale_tens.element_size_bytes = 10 # Slice the weight stream up depth-ways into bricks and compress |