Add set_local support for static quant with pt2e

neural_compressor/torch/algorithms/pt2e_quant/half_precision_rewriter.py

@@ -137,7 +137,8 @@ def get_unquantized_node_set(gm: torch.fx.GraphModule):
     for node in gm.graph.nodes:
         if meta := getattr(node, "meta"):
             if quantization_annotation := meta.get(xiq.QUANT_ANNOTATION_KEY):
-                if quantization_annotation._annotated:
+                none_annotation = xiq._X86InductorQuantizationAnnotation(_annotated=True)
+                if quantization_annotation != none_annotation:
                     continue
         unquantized_node_set.add(node)
     return unquantized_node_set
@@ -163,11 +164,11 @@ def _parse_node_candidate_set_from_user_config(config, gm):
     op_name_filters = []
     for op_type_name, config in op_type_configs.items():
         op_type = getattr(torch.nn, op_type_name)
-        if config.act_dtype == "fp16":
+        if config.act_dtype == "fp16":  # pragma: no cover
             filter = xpq._get_module_type_filter(op_type)
             op_type_filters.append(filter)
     for op_name, config in op_name_configs.items():
-        if config.act_dtype == "fp16":
+        if config.act_dtype == "fp16":  # pragma: no cover
             filter = xpq._get_module_name_filter(op_name)
             op_name_filters.append(filter)
     node_set_from_user_config = set()

neural_compressor/torch/algorithms/pt2e_quant/utility.py

@@ -20,6 +20,8 @@
 from torch.ao.quantization.quantizer import QuantizationSpec
 from torch.ao.quantization.quantizer.x86_inductor_quantizer import QuantizationConfig, X86InductorQuantizer
 
+from neural_compressor.torch.utils import GT_TORCH_VERSION_2_3_2
+
 
 def create_quant_spec_from_config(dtype, sym, granularity, algo, is_dynamic=False) -> QuantizationSpec:
     dtype_mapping: Dict[str, torch.dtype] = {"int8": torch.int8, "uint8": torch.uint8}
@@ -53,6 +55,9 @@ def create_quant_spec_from_config(dtype, sym, granularity, algo, is_dynamic=Fals
 
 
 def _map_inc_config_to_torch_quant_config(inc_config, is_dynamic=False) -> QuantizationConfig:
+    NOT_QUANT_DTYPES = ["fp32", "fp16", "bf16"]
+    if inc_config.act_dtype in NOT_QUANT_DTYPES and inc_config.w_dtype in NOT_QUANT_DTYPES:
+        return None
     default_quant_config = xiq.get_default_x86_inductor_quantization_config(is_dynamic=is_dynamic)
     input_act_quant_spec = create_quant_spec_from_config(
         inc_config.act_dtype, inc_config.act_sym, inc_config.act_granularity, inc_config.act_algo, is_dynamic=is_dynamic
@@ -75,5 +80,22 @@ def create_xiq_quantizer_from_pt2e_config(config, is_dynamic=False) -> X86Induct
     # set global
     global_config = _map_inc_config_to_torch_quant_config(config, is_dynamic)
     quantizer.set_global(global_config)
-    # Skip the local config for now (need torch 2.4)
+    # need torch >= 2.3.2
+    if GT_TORCH_VERSION_2_3_2:  # pragma: no cover
+        op_type_config_dict, op_name_config_dict = config._get_op_name_op_type_config()
+        if op_type_config_dict:
+            for op_type, config in op_type_config_dict.items():
+                _nn_module_type = getattr(torch.nn, op_type, None)
+                if _nn_module_type:
+                    quantizer.set_module_type_qconfig(
+                        _nn_module_type, _map_inc_config_to_torch_quant_config(config, is_dynamic)
+                    )
+                _nn_func_type = getattr(torch.nn.functional, op_type, None)
+                if _nn_func_type:
+                    quantizer.set_function_type_qconfig(
+                        _nn_module_type, _map_inc_config_to_torch_quant_config(config, is_dynamic)
+                    )
+        if op_name_config_dict:
+            for op_name, config in op_name_config_dict.items():
+                quantizer.set_module_name_qconfig(op_name, _map_inc_config_to_torch_quant_config(config, is_dynamic))
     return quantizer

neural_compressor/torch/utils/environ.py

@@ -91,6 +91,9 @@ def get_torch_version():
     return version
 
 
+GT_TORCH_VERSION_2_3_2 = get_torch_version() > Version("2.3.2")
+
+
 def get_accelerator(device_name="auto"):
     global accelerator  # update the global accelerator when calling this func
     from neural_compressor.torch.utils.auto_accelerator import auto_detect_accelerator

test/3x/torch/quantization/test_pt2e_quant.py

@@ -17,7 +17,7 @@
     prepare,
     quantize,
 )
-from neural_compressor.torch.utils import TORCH_VERSION_2_2_2, get_torch_version
+from neural_compressor.torch.utils import GT_TORCH_VERSION_2_3_2, TORCH_VERSION_2_2_2, get_torch_version
 
 torch.manual_seed(0)
 
@@ -119,6 +119,42 @@ def calib_fn(model):
         logger.warning("out shape is %s", out.shape)
         assert out is not None
 
+    @pytest.mark.skipif(not GT_TORCH_VERSION_2_3_2, reason="Requires torch>=2.3.2")
+    def test_quantize_simple_model_with_set_local(self, force_not_import_ipex):
+        model, example_inputs = self.build_simple_torch_model_and_example_inputs()
+        float_model_output = model(*example_inputs)
+        quant_config = None
+
+        def calib_fn(model):
+            for i in range(4):
+                model(*example_inputs)
+
+        quant_config = get_default_static_config()
+        quant_config.set_local("fc1", StaticQuantConfig(w_dtype="fp32", act_dtype="fp32"))
+        q_model = quantize(model=model, quant_config=quant_config, run_fn=calib_fn)
+
+        # check the half node
+        expected_node_occurrence = {
+            # Only quantize the `fc2`
+            torch.ops.quantized_decomposed.quantize_per_tensor.default: 2,
+            torch.ops.quantized_decomposed.quantize_per_tensor.default: 2,
+        }
+        expected_node_occurrence = {
+            torch_test_quant_common.NodeSpec.call_function(k): v for k, v in expected_node_occurrence.items()
+        }
+        node_in_graph = self.get_node_in_graph(q_model)
+        for node, cnt in expected_node_occurrence.items():
+            assert node_in_graph.get(node, 0) == cnt, f"Node {node} should occur {cnt} times, but {node_in_graph[node]}"
+
+        from torch._inductor import config
+
+        config.freezing = True
+        q_model_out = q_model(*example_inputs)
+        assert torch.allclose(float_model_output, q_model_out, atol=1e-2), "Quantization failed!"
+        opt_model = torch.compile(q_model)
+        out = opt_model(*example_inputs)
+        assert out is not None
+
     @pytest.mark.skipif(get_torch_version() <= TORCH_VERSION_2_2_2, reason="Requires torch>=2.3.0")
     @pytest.mark.parametrize("is_dynamic", [False, True])
     def test_prepare_and_convert_on_simple_model(self, is_dynamic, force_not_import_ipex):
@@ -193,9 +229,9 @@ def get_node_in_graph(graph_module):
                     nodes_in_graph[n] += 1
                 else:
                     nodes_in_graph[n] = 1
-        return
+        return nodes_in_graph
 
-    @pytest.mark.skipif(get_torch_version() <= TORCH_VERSION_2_2_2, reason="Requires torch>=2.3.0")
+    @pytest.mark.skipif(not GT_TORCH_VERSION_2_3_2, reason="Requires torch>=2.3.0")
     def test_mixed_fp16_and_int8(self, force_not_import_ipex):
         model, example_inputs = self.build_model_include_conv_and_linear()
         model = export(model, example_inputs=example_inputs)
@@ -221,9 +257,7 @@ def test_mixed_fp16_and_int8(self, force_not_import_ipex):
         }
         node_in_graph = self.get_node_in_graph(converted_model)
         for node, cnt in expected_node_occurrence.items():
-            assert (
-                expected_node_occurrence.get(node, 0) == cnt
-            ), f"Node {node} should occur {cnt} times, but {node_in_graph[node]}"
+            assert node_in_graph.get(node, 0) == cnt, f"Node {node} should occur {cnt} times, but {node_in_graph[node]}"
 
         # inference
         from torch._inductor import config