def step_streamline(model: ModelWrapper, cfg: DataflowBuildConfig):
"""Run streamlining on given model. Streamlining involves moving floating point
scale/shift parameters around, collapsing adjacent ones into a single parameter,
then absorbing the scale/shift into the following `MultiThreshold` node.
Streamlining requires careful topology design and cannot be applied to all
topologies.
"""
model = model.transform(absorb.AbsorbSignBiasIntoMultiThreshold())
model = model.transform(Streamline())
need_lowering = len(model.get_nodes_by_op_type("Conv")) > 0
if need_lowering:
model = model.transform(LowerConvsToMatMul())
model = model.transform(MakeMaxPoolNHWC())
model = model.transform(absorb.AbsorbTransposeIntoMultiThreshold())
model = model.transform(MakeMaxPoolNHWC())
model = model.transform(ConvertBipolarMatMulToXnorPopcount())
model = model.transform(Streamline())
# absorb final add-mul nodes into TopK
model = model.transform(absorb.AbsorbScalarMulAddIntoTopK())
model = model.transform(InferDataLayouts())
model = model.transform(RemoveUnusedTensors())
if VerificationStepType.STREAMLINED_PYTHON in cfg._resolve_verification_steps(
):
verify_step(model, cfg, "streamlined_python", need_parent=False)
return model
def test_end2end_cnv_w1a1_streamline():
model = ModelWrapper(build_dir + "/end2end_cnv_w1a1_tidy.onnx")
model = model.transform(Streamline())
model = model.transform(LowerConvsToMatMul())
model = model.transform(MakeMaxPoolNHWC())
model = model.transform(absorb.AbsorbTransposeIntoMultiThreshold())
model = model.transform(ConvertBipolarMatMulToXnorPopcount())
model = model.transform(Streamline())
model.save(build_dir + "/end2end_cnv_w1a1_streamlined.onnx")
def test_streamline(self, topology, wbits, abits):
prev_chkpt_name = get_checkpoint_name(topology, wbits, abits, "pre_post")
model = load_test_checkpoint_or_skip(prev_chkpt_name)
# move past any reshapes to be able to streamline input scaling
model = model.transform(MoveScalarLinearPastInvariants())
model = model.transform(Streamline())
if "fc" not in topology:
model = model.transform(LowerConvsToMatMul())
model = model.transform(MakeMaxPoolNHWC())
model = model.transform(absorb.AbsorbTransposeIntoMultiThreshold())
model = model.transform(ConvertBipolarMatMulToXnorPopcount())
model = model.transform(Streamline())
# absorb final add-mul nodes into TopK
model = model.transform(absorb.AbsorbScalarMulAddIntoTopK())
model = model.transform(InferDataLayouts())
model = model.transform(RemoveUnusedTensors())
model.save(get_checkpoint_name(topology, wbits, abits, "streamline"))
def test_convert_to_hls_layers_cnv_w1a1(fused_activation):
cnv = get_test_model_trained("CNV", 1, 1)
bo.export_finn_onnx(cnv, (1, 3, 32, 32), export_onnx_path_cnv)
model = ModelWrapper(export_onnx_path_cnv)
model = model.transform(InferShapes())
model = model.transform(FoldConstants())
model = model.transform(GiveUniqueNodeNames())
model = model.transform(GiveReadableTensorNames())
model = model.transform(Streamline())
model = model.transform(LowerConvsToMatMul())
model = model.transform(MakeMaxPoolNHWC())
model = model.transform(absorb.AbsorbTransposeIntoMultiThreshold())
model = model.transform(ConvertBipolarMatMulToXnorPopcount())
model = model.transform(Streamline())
model = model.transform(InferDataLayouts())
# model.save("golden.onnx")
# load one of the test vectors
fn = pk.resource_filename("finn.qnn-data",
"cifar10/cifar10-test-data-class3.npz")
input_tensor = np.load(fn)["arr_0"].astype(np.float32)
input_tensor = input_tensor / 255
assert input_tensor.shape == (1, 3, 32, 32)
# generate expected value from streamlined net
input_dict = {"global_in": input_tensor}
expected_ctx = oxe.execute_onnx(model, input_dict, True)
expected = expected_ctx[model.graph.output[0].name]
# if we infer thresholding first, all MultiThresholds get converted to HLS
# subsequently, the FC inference will generate passthrough MVAUs
if not fused_activation:
model = model.transform(to_hls.InferThresholdingLayer())
model = model.transform(to_hls.InferBinaryStreamingFCLayer())
model = model.transform(to_hls.InferQuantizedStreamingFCLayer())
for node in model.graph.node:
if node.op_type == "StreamingFCLayer_Batch":
inst = getCustomOp(node)
inst.set_nodeattr("mem_mode", "decoupled")
mw = inst.get_nodeattr("MW")
mh = inst.get_nodeattr("MH")
if mh % 4 == 0:
pe = mh // 4
else:
pe = mh
inst.set_nodeattr("PE", pe)
if mw % 16 == 0:
simd = mw // 16
else:
simd = mw
inst.set_nodeattr("SIMD", simd)
model = model.transform(to_hls.InferConvInpGen())
model = model.transform(to_hls.InferStreamingMaxPool())
# check topology status
finn_nodes = model.get_finn_nodes()
if fused_activation:
assert len(finn_nodes) == 18
else:
assert len(finn_nodes) == 26
thr_nodes = model.get_nodes_by_op_type("Thresholding_Batch")
assert len(thr_nodes) == 8
non_finn_nodes = model.get_non_finn_nodes()
assert len(non_finn_nodes) == 4
exp_non_finn_nodes = ["Transpose", "Reshape", "Mul", "Add"]
assert [x.op_type for x in non_finn_nodes] == exp_non_finn_nodes
fc_nodes = model.get_nodes_by_op_type("StreamingFCLayer_Batch")
assert len(fc_nodes) == 9
swg_nodes = model.get_nodes_by_op_type("ConvolutionInputGenerator")
assert len(swg_nodes) == 6
mp_nodes = model.get_nodes_by_op_type("StreamingMaxPool_Batch")
assert len(mp_nodes) == 2
# model.save("cnv-pre-compile.onnx")
model = model.transform(PrepareCppSim())
model = model.transform(CompileCppSim())
model = model.transform(SetExecMode("cppsim"))
# model.save("cnv-post-compile.onnx")
produced_ctx = oxe.execute_onnx(model, input_dict, True)
produced = produced_ctx[model.graph.output[0].name]
assert np.isclose(expected, produced, atol=1e-3).all()
assert np.argmax(produced) == 3
os.remove(export_onnx_path_cnv)
def test_infer_data_layouts_cnv():
cnv = get_test_model_trained("CNV", 1, 1)
bo.export_finn_onnx(cnv, (1, 3, 32, 32), export_onnx_path_cnv)
model = ModelWrapper(export_onnx_path_cnv)
model = model.transform(InferShapes())
model = model.transform(FoldConstants())
model = model.transform(GiveUniqueNodeNames())
model = model.transform(GiveReadableTensorNames())
model = model.transform(Streamline())
model = model.transform(InferDataLayouts())
assert model.get_tensor_layout("global_in") == DataLayout.NCHW
assert model.get_tensor_layout("Conv_0_out0") == DataLayout.NCHW
assert model.get_tensor_layout("MaxPool_0_out0") == DataLayout.NCHW
assert model.get_tensor_layout("MultiThreshold_6_out0") == DataLayout.NCHW
assert model.get_tensor_layout("Reshape_0_out0") == DataLayout.NC
assert model.get_tensor_layout("MatMul_0_out0") == DataLayout.NC
assert model.get_tensor_layout("global_out") == DataLayout.NC
model = model.transform(LowerConvsToMatMul())
model = model.transform(MakeMaxPoolNHWC())
model = model.transform(GiveUniqueNodeNames())
model = model.transform(GiveReadableTensorNames())
model = model.transform(InferDataLayouts())
assert model.get_tensor_layout("global_in") == DataLayout.NCHW
assert model.get_tensor_layout("Transpose_0_out0") == DataLayout.NHWC
assert model.get_tensor_layout("Im2Col_0_out0") == DataLayout.NHWC
# note: im2col output isn't really NHWC or any other common layout
# since the concept of channels changes with lowering... but it is
# conceptually close to NHWC since the innermost dim gets multiplied
assert model.get_tensor_layout("MatMul_0_out0") == DataLayout.NHWC
assert model.get_tensor_layout("Transpose_1_out0") == DataLayout.NCHW
assert model.get_tensor_layout("Transpose_2_out0") == DataLayout.NHWC
assert model.get_tensor_layout("MaxPoolNHWC_0_out0") == DataLayout.NHWC
assert model.get_tensor_layout("Reshape_0_out0") == DataLayout.NC
assert model.get_tensor_layout("global_out") == DataLayout.NC
model = model.transform(absorb.AbsorbTransposeIntoMultiThreshold())
model = model.transform(ConvertBipolarMatMulToXnorPopcount())
model = model.transform(Streamline())
model = model.transform(to_hls.InferBinaryStreamingFCLayer())
model = model.transform(to_hls.InferQuantizedStreamingFCLayer())
model = model.transform(to_hls.InferConvInpGen())
model = model.transform(to_hls.InferStreamingMaxPool())
model = model.transform(GiveUniqueNodeNames())
model = model.transform(GiveReadableTensorNames())
model = model.transform(InferDataLayouts())
assert model.get_tensor_layout("global_in") == DataLayout.NCHW
assert model.get_tensor_layout("Transpose_0_out0") == DataLayout.NHWC
# note: im2col output isn't really NHWC or any other common layout
# since the concept of channels changes with lowering... but it is
# conceptually close to NHWC since the innermost dim gets multiplied
assert (model.get_tensor_layout("ConvolutionInputGenerator_0_out0") ==
DataLayout.NHWC)
assert model.get_tensor_layout(
"StreamingFCLayer_Batch_3_out0") == DataLayout.NHWC
assert model.get_tensor_layout("Reshape_0_out0") == DataLayout.NC
assert model.get_tensor_layout(
"StreamingFCLayer_Batch_6_out0") == DataLayout.NC
assert model.get_tensor_layout("global_out") == DataLayout.NC
os.remove(export_onnx_path_cnv)
