feat(imperative/utils): optimize the naming rules

GitOrigin-RevId: 329bac640aa6e2e3c981aa294a361684b982892e

imperative/python/megengine/jit/tracing.py

@@ -40,7 +40,7 @@ from ..core.ops.builtin import BackwardGraph, OpDef
 from ..core.ops.special import Const
 from ..core.tensor import megbrain_graph as G
 from ..core.tensor.utils import setscalar
-from ..utils.naming import auto_naming
+from ..utils.naming import AutoNaming
 from .sublinear_memory_config import SublinearMemoryConfig
 
 
@@ -297,9 +297,7 @@ class trace:
             h = getattr(x, "_mixin_handle", -1)
             if h < 0 or (not self._capture_as_const and self._tinfo[h].exported):
                 h, info = self._new_handle()
-                name = (
-                    auto_naming.get_scope() + "." + (x.c_name if x.c_name else x._name)
-                )
+                name = AutoNaming.gen_name(x)
                 info.name = name
                 info.external = True
                 info.device = x.device
@@ -845,17 +843,17 @@ class trace:
                 ivars.append(h2v[h])
             ovars = G.apply_normal_varnode(op, *ivars)
 
-            auto_naming.record_opnode(ovars[0].op)
+            AutoNaming.record_opnode(ovars[0].op)
 
             assert len(ovars) == len(ohandles)
             h2v.update(zip(ohandles, ovars))
 
             for i in ohandles:
-                name = auto_naming.get_var_name(i)
+                name = AutoNaming.get_var_name(i)
                 if name is not None:
                     h2v[i].name = name
 
-        auto_naming.remove_duplicate_names()
+        AutoNaming.remove_duplicate_names()
 
         dest_vars = []
         for i, h in enumerate(self._output_bindings):
@@ -1173,7 +1171,7 @@ def apply_const_compiled_mode(value, dtype, device, is_const, no_cache, name):
 
 def apply_with_tracing(op: OpDef, *args: RawTensor):
     if hasattr(op, "scope"):
-        op.scope = auto_naming.get_scope()
+        op.scope = AutoNaming.get_scope()
     if active_trace._symbolic:
         outputs = apply_symbolic_mode(op, *args)
     else:

imperative/python/megengine/module/module.py

@@ -16,7 +16,7 @@ from ..logger import get_logger
 from ..tensor import Parameter, Tensor
 from ..utils.deprecation import deprecated
 from ..utils.hook import HookHandler
-from ..utils.naming import auto_naming
+from ..utils.naming import AutoNaming
 
 logger = get_logger(__name__)
 
@@ -111,7 +111,7 @@ class Module(metaclass=ABCMeta):
         self._forward_hooks = OrderedDict()
 
         # used for profiler and automatic naming
-        self._name = "{anonymous}"
+        self._name = None
 
     @abstractmethod
     def forward(self, inputs):
@@ -137,7 +137,7 @@ class Module(metaclass=ABCMeta):
         return HookHandler(self._forward_hooks, hook)
 
     def __call__(self, *inputs, **kwargs):
-        auto_naming.push_scope(self.name if self.name is not None else self._name)
+        AutoNaming.push_scope(self.name if self.name is not None else self._name)
         for hook in self._forward_pre_hooks.values():
             modified_inputs = hook(self, inputs)
             if modified_inputs is not None:
@@ -151,7 +151,7 @@ class Module(metaclass=ABCMeta):
             modified_outputs = hook(self, inputs, outputs)
             if modified_outputs is not None:
                 outputs = modified_outputs
-        auto_naming.pop_scope()
+        AutoNaming.pop_scope()
         return outputs
 
     def _flatten(

imperative/python/megengine/tensor.py

@@ -20,7 +20,7 @@ from .core.tensor.array_method import ArrayMethodMixin
 from .device import _valid_device, get_default_device
 from .logger import get_logger
 from .utils.deprecation import deprecated
-from .utils.naming import auto_naming
+from .utils.naming import AutoNaming
 
 logger = get_logger(__name__)
 
@@ -168,7 +168,7 @@ class Tensor(_Tensor, ArrayMethodMixin):
     @name.setter
     def name(self, name):
         self.c_name = name
-        auto_naming.record_var_name(self._mixin_handle, name)
+        AutoNaming.record_var_name(self._mixin_handle, name)
 
     @deprecated(version="1.0", reason="no need to reuse an existing tensor since 1.0")
     def set_value(self, value):

imperative/python/megengine/utils/naming.py

@@ -15,40 +15,57 @@ class AutoNaming:
     renamed by the user.
     """
 
-    def __init__(self):
-        self.scopes = []
-        self.c_ops = []
-        self.name2ops = {}
-        self.handle2names = {}
+    scopes = []
+    c_ops = []
+    name2ops = {}
+    handle2names = {}
+    __cls_attributes__ = {"scopes", "c_ops", "name2ops", "handle2names"}
 
-    def clear(self):
-        for var in vars(self).values():
-            var.clear()
+    @classmethod
+    def clear(cls):
+        for attr in cls.__cls_attributes__:
+            getattr(cls, attr).clear()
 
-    def push_scope(self, scope):
-        push_scope(scope)
-        self.scopes.append(scope)
+    @classmethod
+    def push_scope(cls, scope):
+        if scope is not None:
+            push_scope(scope)
+        cls.scopes.append(scope)
 
-    def pop_scope(self):
-        scope = self.scopes.pop()
-        pop_scope(scope)
+    @classmethod
+    def pop_scope(cls):
+        scope = cls.scopes.pop()
+        if scope is not None:
+            pop_scope(scope)
 
-    def get_scope(self):
-        return ".".join(self.scopes)
+    @classmethod
+    def get_scope(cls):
+        return ".".join(s for s in cls.scopes if s is not None)
 
-    def record_var_name(self, handle, name):
-        self.handle2names[handle] = name
+    @classmethod
+    def gen_name(cls, x) -> str:
+        scope = cls.get_scope()
+        name = x.c_name if x.c_name else x._name
+        return scope + "." + name if len(scope) else name
 
-    def get_var_name(self, handle):
-        return self.handle2names.pop(handle, None)
+    @classmethod
+    def record_var_name(cls, handle, name):
+        cls.handle2names[handle] = name
 
-    def record_opnode(self, op):
-        ops = self.name2ops.get(op.name, [])
-        ops.append(op)
-        self.name2ops[op.name] = ops
+    @classmethod
+    def get_var_name(cls, handle):
+        return cls.handle2names.pop(handle, None)
 
-    def remove_duplicate_names(self):
-        for key, ops in self.name2ops.items():
+    @classmethod
+    def record_opnode(cls, op):
+        ops = cls.name2ops.get(op.name, [])
+        if op not in ops:
+            ops.append(op)
+        cls.name2ops[op.name] = ops
+
+    @classmethod
+    def remove_duplicate_names(cls):
+        for key, ops in cls.name2ops.items():
             if len(ops) == 1:
                 continue
             for i, op in enumerate(ops):
@@ -57,7 +74,4 @@ class AutoNaming:
                     continue
                 for var in op.outputs:
                     var.name = var.name.replace(key, op.name)
-        self.name2ops.clear()
-
-
-auto_naming = AutoNaming()
+        cls.name2ops.clear()

imperative/python/test/unit/jit/test_tracing.py

@@ -28,7 +28,7 @@ from megengine.functional import exp, log
 from megengine.jit import exclude_from_trace, trace
 from megengine.module import Module
 from megengine.random import normal, uniform
-from megengine.utils.naming import auto_naming
+from megengine.utils.naming import AutoNaming
 
 
 @pytest.mark.parametrize("trace_mode", [False, True])
@@ -141,7 +141,7 @@ def test_dump():
         return a + b
 
     # prevent from remaining scope from exception test
-    auto_naming.clear()
+    AutoNaming.clear()
     a = tensor([2])
     b = tensor([4])
     y = f(a, b).numpy()

imperative/python/test/unit/utils/test_dump_naming.py

@@ -18,11 +18,11 @@ from megengine import Parameter, Tensor
 from megengine.core.tensor import megbrain_graph as G
 from megengine.jit.tracing import trace
 from megengine.quantization.quantize import quantize, quantize_qat
-from megengine.utils.naming import auto_naming
+from megengine.utils.naming import AutoNaming
 
 
 def _dump_and_load(func, symbolic, keep_opr_name=True):
-    auto_naming.clear()
+    AutoNaming.clear()
     func = trace(func, symbolic=symbolic, capture_as_const=True)
     x = Tensor(np.ones(shape=(2, 3)))
     func(x).numpy()
@@ -103,6 +103,18 @@ def test_without_module(symbolic):
     assert op.name == "MUL"
 
 
+@pytest.mark.parametrize("symbolic", [False, True])
+def test_ignore_top_module(symbolic):
+    class Simple(M.Module):
+        def forward(self, x):
+            return x + x
+
+    m = Simple()
+    op = _dump_and_load(m, symbolic)[-1]
+    assert op.name == "ADD"
+    assert op.outputs[0].name == "ADD"
+
+
 @pytest.mark.parametrize("symbolic", [False, True])
 def test_with_submodule(symbolic):
     class Simple(M.Module):
@@ -196,7 +208,7 @@ def test_not_keep_opr_name():
         return 2 * x
 
     op = _dump_and_load(f, True, False)[-1]
-    assert op.name == "MUL(x,2[2])[4]"
+    assert op.name == "MUL(x,const<2>[2])[4]"
 
 
 @pytest.mark.parametrize("symbolic", [False, True])

src/opr/impl/io.cpp

@@ -419,7 +419,7 @@ void ImmutableTensor::Value::setup(CompNode cn, const HostTensorND &val) {
     if (one_elem(val.shape())) {
         float v;
         static_cast_dtype(&v, val.dtype(), val.raw_ptr());
-        m_summary = ssprintf("%.3g", v);
+        m_summary = ssprintf("const<%.3g>", v);
         if (val.shape().ndim != 1) {
             m_summary += val.shape().to_string();
         }