[autoparallel] add torch.nn.ReLU metainfo (#1868)

* [fx] metainfo class for auto parallel * [fx] add unit test for linear metainfo * [fx] fix bwd param for linear * [fx] modify unit test * [fx] modify unit test * [fx] modify import * [fx] modify import * [fx] modify import * [fx] move meta profiler to auto parallel * [fx] add conv metainfo class * [fx] restore profiler * [fx] restore meta profiler * [autoparallel] modify unit test * [fx] modify unit test * [autoparallel] add batchnorm metainfo class * [autoparallel] fix batchnorm unit test function declaration * [fx] restore profiler * [fx] add relu metainfo class * [fx] restore profiler * [autoparallel] modify metainfo input
2025-09-13 13:11:05 +00:00 · 2022-11-16 23:12:31 +08:00
parent 8c66a1d0aa
commit 7c7921f71b
9 changed files with 151 additions and 8 deletions
--- a/colossalai/auto_parallel/meta_profiler/meta_registry/activation.py
+++ b/colossalai/auto_parallel/meta_profiler/meta_registry/activation.py
@@ -0,0 +1,68 @@
+from typing import List, Tuple
+
+import torch
+
+from colossalai.auto_parallel.tensor_shard.sharding_strategy import MemoryCost, OperationDataType, TrainCycleItem
+from colossalai.fx.profiler.memory_utils import activation_size
+from colossalai.fx.profiler.opcount import flop_mapping
+
+from ..registry import meta_register
+
+__all__ = ["relu_meta_info"]
+
+
+@meta_register.register(torch.nn.ReLU)
+def relu_meta_info(*args, **kwargs) -> Tuple[TrainCycleItem, TrainCycleItem, List[torch.Tensor]]:
+    """torch.nn.ReLU metainfo generator
+    The aten graph of torch.nn.ReLU is
+    graph():
+    %input_2 : [#users=1] = placeholder[target=placeholder](default=)
+    %relu_default : [#users=2] = call_function[target=torch.ops.aten.relu.default](args = (%input_2,), kwargs = {})
+    %zeros_like_default : [#users=1] = call_function[target=torch.ops.aten.zeros_like.default](args = (%relu_default,), kwargs = {dtype: None, layout: None, device: None, pin_memory: None})
+    %detach_default : [#users=1] = call_function[target=torch.ops.aten.detach.default](args = (%relu_default,), kwargs = {})
+    %threshold_backward_default : [#users=1] = call_function[target=torch.ops.aten.threshold_backward.default](args = (%zeros_like_default, %detach_default, None), kwargs = {})
+    %detach_default_1 : [#users=1] = call_function[target=torch.ops.aten.detach.default](args = (%threshold_backward_default,), kwargs = {})
+    %detach_default_2 : [#users=0] = call_function[target=torch.ops.aten.detach.default](args = (%detach_default_1,), kwargs = {})
+
+    Returns:
+        Tuple[TrainCycleItem, TrainCycleItem, List[torch.Tensor]]: compute cost, memory cost and forward inputs
+    """
+
+    input_tensor = next(filter(lambda x: x.type == OperationDataType.ARG, args)).data
+    output_tensor = next(filter(lambda x: x.type == OperationDataType.OUTPUT, args)).data
+    inplace = kwargs.get("inplace", False)
+
+    # construct input args for forward
+    fwd_in_args = [input_tensor]
+
+    # construct input args for backward
+    bwd_in_args = [output_tensor]
+
+    # calculate cost
+    # the fwd op with compute cost is relu.default
+    # the bwd op with compute cost is threshold_backward
+
+    # calculate compute cost
+    fwd_compute_cost = flop_mapping[torch.ops.aten.relu.default](fwd_in_args, (output_tensor,))
+    bwd_compute_cost = flop_mapping[torch.ops.aten.threshold_backward.default](bwd_in_args, (input_tensor,))
+    compute_cost = TrainCycleItem(fwd=fwd_compute_cost, bwd=bwd_compute_cost, total=fwd_compute_cost + bwd_compute_cost)
+
+    # calculate memory cost
+    # NOTE: the inplace ReLU don't have forward memory cost
+    fwd_memory_cost = MemoryCost(activation=0 if inplace else activation_size(output_tensor),
+                                 parameter=0,
+                                 temp=0,
+                                 buffer=0)
+
+    bwd_memory_cost = MemoryCost(activation=activation_size(input_tensor), parameter=0, temp=0, buffer=0)
+
+    # total cost is the sum of forward and backward cost
+    total_cost = MemoryCost(activation=fwd_memory_cost.activation + bwd_memory_cost.activation,
+                            parameter=fwd_memory_cost.parameter + bwd_memory_cost.parameter)
+
+    memory_cost = TrainCycleItem(fwd=fwd_memory_cost, bwd=bwd_memory_cost, total=total_cost)
+
+    # store fwd_in
+    fwd_in = [input_tensor]
+
+    return compute_cost, memory_cost, fwd_in