[autoparallel] Patch meta information of `torch.nn.LayerNorm` (#2647)

* [autoparallel] layernorm metainfo patch

* [autoparallel] polish test

colossalai/auto_parallel/meta_profiler/meta_registry/norm.py

@@ -16,7 +16,7 @@ from colossalai.tensor.sharding_spec import ShardingSpec
 
 from ..registry import meta_register
 
-__all__ = ['batchnormnd_meta_info']
+__all__ = ['batchnormnd_meta_info', 'layernorm_meta_info']
 
 
 @meta_register.register(torch.nn.BatchNorm1d)
@@ -101,3 +101,56 @@ def batchnormnd_meta_info(*args, **kwargs) -> Tuple[TrainCycleItem, TrainCycleIt
     fwd_out = [torch.zeros_like(output_tensor, device='meta')]
 
     return compute_cost, memory_cost, fwd_in, fwd_buffer, fwd_out
+
+
+@meta_register.register(torch.nn.LayerNorm)
+def layernorm_meta_info(*args, **kwargs) -> Tuple[TrainCycleItem, TrainCycleItem, List[torch.Tensor]]:
+    """LayerNorm meta information
+
+    Returns:
+        Tuple[TrainCycleItem, TrainCycleItem, List[torch.Tensor]]: compute cost, memory cost and forward inputs
+    """
+    # construct needed tensors
+    input_tensor = next(filter(lambda x: x.type == OperationDataType.ARG, args)).data
+    output_tensor = next(filter(lambda x: x.type == OperationDataType.OUTPUT, args)).data
+    weight_tensor = next(filter(lambda x: x.name == "weight", args)).data
+    bias_tensor = next(filter(lambda x: x.name == "bias", args)).data
+    running_mean = torch.rand(input_tensor.shape[0], 1, device='meta')
+    running_var = torch.rand(input_tensor.shape[0], 1, device='meta')
+
+    # construct args
+    fwd_in_args = [input_tensor, [input_tensor.shape[0]], weight_tensor]
+    fwd_out_args = [output_tensor]
+    bwd_in_args = [input_tensor, output_tensor, [input_tensor.shape[0]]]
+    bwd_out_args = [weight_tensor, bias_tensor]
+
+    # compute cost
+    fwd_compute_cost = flop_mapping[torch.ops.aten.native_layer_norm.default](fwd_in_args, fwd_out_args)
+    bwd_compute_cost = flop_mapping[torch.ops.aten.native_layer_norm_backward.default](bwd_in_args, bwd_out_args)
+    compute_cost = TrainCycleItem(fwd=fwd_compute_cost, bwd=bwd_compute_cost, total=fwd_compute_cost + bwd_compute_cost)
+
+    # memory cost
+    # NOTE: currently in SPMD solver we always believe that there will be a new tensor created in forward
+    fwd_memory_cost = MemoryCost(activation=activation_size([input_tensor, output_tensor, weight_tensor, bias_tensor]),
+                                 parameter=activation_size([weight_tensor, bias_tensor]),
+                                 temp=0,
+                                 buffer=activation_size([running_mean, running_var]))
+
+    bwd_memory_cost = MemoryCost(activation=activation_size([input_tensor, weight_tensor, bias_tensor]),
+                                 parameter=activation_size([weight_tensor, bias_tensor]),
+                                 temp=activation_size([running_mean, running_var]),
+                                 buffer=activation_size([running_mean, running_var]))
+
+    total_cost = MemoryCost(activation=fwd_memory_cost.activation + bwd_memory_cost.activation,
+                            parameter=fwd_memory_cost.parameter + bwd_memory_cost.parameter,
+                            temp=fwd_memory_cost.temp + bwd_memory_cost.temp,
+                            buffer=fwd_memory_cost.buffer + bwd_memory_cost.buffer)
+
+    memory_cost = TrainCycleItem(fwd=fwd_memory_cost, bwd=bwd_memory_cost, total=total_cost)
+
+    # store fwd_in, fwd_buffer, fwd_out
+    fwd_in = [torch.zeros_like(input_tensor, device='meta')]
+    fwd_buffer = [torch.zeros_like(running_mean, device='meta'), torch.zeros_like(running_var, device='meta')]
+    fwd_out = [torch.zeros_like(output_tensor, device='meta')]
+
+    return compute_cost, memory_cost, fwd_in, fwd_buffer, fwd_out

colossalai/auto_parallel/tensor_shard/node_handler/layer_norm_handler.py

@@ -3,7 +3,7 @@ from typing import Dict, List
 import torch
 
 from ..sharding_strategy import OperationData, OperationDataType
-from .node_handler import ModuleHandler
+from .node_handler import MetaInfoModuleHandler, ModuleHandler
 from .registry import operator_registry
 from .strategy import LayerNormGenerator, StrategyGenerator
 
@@ -11,7 +11,7 @@ __all__ = ['LayerNormModuleHandler']
 
 
 @operator_registry.register(torch.nn.LayerNorm)
-class LayerNormModuleHandler(ModuleHandler):
+class LayerNormModuleHandler(MetaInfoModuleHandler):
     """
     A LayerNormModuleHandler which deals with the sharding strategies for nn.LayerNorm module.
     """

tests/test_auto_parallel/test_tensor_shard/test_metainfo/test_matmul_metainfo.py

@@ -21,7 +21,7 @@ from colossalai.logging import disable_existing_loggers
 from colossalai.testing.pytest_wrapper import run_on_environment_flag
 from colossalai.testing.utils import parameterize, rerun_if_address_is_in_use
 from colossalai.utils import free_port
-from tests.test_auto_parallel.test_tensor_shard.test_metainfo.utils import mem_test_for_node_strategy
+from tests.test_auto_parallel.test_tensor_shard.test_metainfo.utils import print_results
 
 if torch.__version__ >= '1.12.0':
     from colossalai.auto_parallel.meta_profiler import MetaInfo, meta_register
@@ -102,43 +102,8 @@ def test_matmul_function_meta_info(tensor_shapes):
     compute_cost: TrainCycleItem
     memory_cost: TrainCycleItem
 
-    print("=====================")
-    print(f"input shapes: {tensor_shapes[0]}, {tensor_shapes[1]}")
-    print(f"output shapes: {output_tensor.shape}")
-
-    # estimated results
-    print("Estimated Results")
-
-    # compute cost
-    print("compute_cost:")
-    print(f"    fwd: {compute_cost.fwd}")
-    print(f"    bwd: {compute_cost.bwd}")
-
-    # memory cost
-    print("memory_cost:")
-    # fwd
-    print(f"    fwd activation: {memory_cost.fwd.activation / 1024} KB")
-    print(f"    fwd buffer: {memory_cost.fwd.buffer / 1024} KB")
-    print(f"    fwd temp: {memory_cost.fwd.temp / 1024} KB")
-    print(f"    fwd parameter: {memory_cost.fwd.parameter / 1024} KB")
-
-    # bwd
-    print(f"    bwd activation: {memory_cost.bwd.activation / 1024} KB")
-    print(f"    bwd buffer: {memory_cost.bwd.buffer / 1024} KB")
-    print(f"    bwd temp: {memory_cost.bwd.temp / 1024} KB")
-    print(f"    bwd parameter: {memory_cost.bwd.parameter / 1024} KB")
-
-    # actual results
-    print("Actual Results")
-
-    print("memory_cost:")
-    # fwd
-    print(f"    fwd allocated: {fwd_allocated / 1024} KB")
-    print(f"    fwd peak: {fwd_peak / 1024} KB")
-
-    # bwd
-    print(f"    bwd allocated: {bwd_allocated / 1024} KB")
-    print(f"    bwd peak: {bwd_peak / 1024} KB")
+    print_results([input_real_tensor, other_real_tensor], [output_real_tensor], compute_cost, memory_cost,
+                  fwd_allocated, fwd_peak, bwd_allocated, bwd_peak)
 
 
 if __name__ == '__main__':

tests/test_auto_parallel/test_tensor_shard/test_metainfo/test_batchnorm_metainfo.py → tests/test_auto_parallel/test_tensor_shard/test_metainfo/test_norm_metainfo.py

@@ -5,6 +5,14 @@ import torch
 import torch.multiprocessing as mp
 import torch.nn as nn
 
+from colossalai.auto_parallel.tensor_shard.sharding_strategy import (
+    MemoryCost,
+    OperationData,
+    OperationDataType,
+    ShardingStrategy,
+    StrategiesVector,
+    TrainCycleItem,
+)
 from colossalai.device.device_mesh import DeviceMesh
 from colossalai.fx import ColoGraphModule, ColoTracer
 from colossalai.initialize import launch
@@ -12,7 +20,10 @@ from colossalai.logging import disable_existing_loggers
 from colossalai.testing.pytest_wrapper import run_on_environment_flag
 from colossalai.testing.utils import parameterize, rerun_if_address_is_in_use
 from colossalai.utils import free_port
-from tests.test_auto_parallel.test_tensor_shard.test_metainfo.utils import mem_test_for_node_strategy
+from tests.test_auto_parallel.test_tensor_shard.test_metainfo.utils import mem_test_for_node_strategy, print_results
+
+if torch.__version__ >= '1.12.0':
+    from colossalai.auto_parallel.meta_profiler import MetaInfo, meta_register
 
 
 def _batchnorm_module_mem_test(rank, world_size, port):
@@ -56,5 +67,65 @@ def test_batchnorm_meta_concrete_info_match():
     mp.spawn(run_func_module, nprocs=world_size)
 
 
+@pytest.mark.skipif(torch.__version__ < '1.12.0', reason='need pytorch 1.12.0 or higher for aten level operations')
+@parameterize('tensor_shape', [
+    [256, 1024],
+    [1024, 256],
+])
+def test_layernorm_meta_info(tensor_shape):
+    meta_func = meta_register.get(torch.nn.LayerNorm)
+
+    # construct input
+    input_tensor = torch.rand(*tensor_shape, device="meta")
+    output_tensor = torch.rand(*tensor_shape, device="meta")
+    weight_tensor = torch.rand(tensor_shape[1], device="meta")
+    bias_tensor = torch.rand(tensor_shape[1], device="meta")
+
+    # construct operation data
+    input_data = OperationData(name="input", type=OperationDataType.ARG, data=input_tensor)
+
+    output_data = OperationData(name="output", type=OperationDataType.OUTPUT, data=output_tensor)
+
+    weight_data = OperationData(name="weight", type=OperationDataType.PARAM, data=weight_tensor)
+
+    bias_data = OperationData(name="bias", type=OperationDataType.PARAM, data=bias_tensor)
+
+    # construct args and kwargs
+    args = [input_data, output_data, weight_data, bias_data]
+    kwargs = {'inplace': False}
+
+    # estimated results
+    compute_cost, memory_cost, fwd_in, fwd_buffer, fwd_out = meta_func(*args, **kwargs)
+
+    # actual results
+    input_real_tensor = torch.rand(*tensor_shape, device="cuda:0")
+
+    input_real_tensor.requires_grad = True
+
+    ln_module = torch.nn.LayerNorm(tensor_shape[1]).cuda()
+
+    # fwd
+    torch.cuda.reset_peak_memory_stats()
+    mem_stamp0 = torch.cuda.memory_allocated()
+    output_real_tensor = ln_module(input_real_tensor)
+    fwd_allocated = torch.cuda.memory_allocated() - mem_stamp0
+    fwd_peak = torch.cuda.max_memory_allocated() - mem_stamp0
+
+    # bwd
+    upstream_grad = torch.rand_like(output_real_tensor)
+    torch.cuda.reset_peak_memory_stats()
+    mem_stamp0 = torch.cuda.memory_allocated()
+    torch.autograd.backward(output_real_tensor, upstream_grad)
+    bwd_allocated = torch.cuda.memory_allocated() - mem_stamp0
+    bwd_peak = torch.cuda.max_memory_allocated() - mem_stamp0
+
+    compute_cost: TrainCycleItem
+    memory_cost: TrainCycleItem
+
+    print_results([input_real_tensor], [output_real_tensor], compute_cost, memory_cost, fwd_allocated, fwd_peak,
+                  bwd_allocated, bwd_peak)
+
+
 if __name__ == '__main__':
     test_batchnorm_meta_concrete_info_match()
+    test_layernorm_meta_info()

tests/test_auto_parallel/test_tensor_shard/test_metainfo/utils.py

@@ -7,7 +7,7 @@ from torch.fx import GraphModule
 
 from colossalai.auto_parallel.passes.runtime_apply_pass import runtime_apply_pass
 from colossalai.auto_parallel.passes.runtime_preparation_pass import runtime_preparation_pass
-from colossalai.auto_parallel.tensor_shard.sharding_strategy import OperationDataType
+from colossalai.auto_parallel.tensor_shard.sharding_strategy import OperationDataType, TrainCycleItem
 from colossalai.auto_parallel.tensor_shard.solver import SolverOptions, StrategiesConstructor
 from colossalai.device.device_mesh import DeviceMesh
 from colossalai.fx.tracer.tracer import ColoTracer
@@ -126,3 +126,56 @@ def mem_test_for_node_strategy(rank: int,
                 f"backward temp: {metainfo.memory_cost.bwd.temp / 1024} kb, backward buffer: {metainfo.memory_cost.bwd.buffer / 1024} kb"
             )
             print("=======================")
+
+
+def print_results(input: List[torch.Tensor], output: List[torch.Tensor], compute_cost: TrainCycleItem,
+                  memory_cost: TrainCycleItem, fwd_allocated, fwd_peak, bwd_allocated, bwd_peak):
+    """Print the results of the meta information test.
+
+    Args:
+        input (List[torch.Tensor]): input tensors
+        output (List[torch.Tensor]): output tensors
+        compute_cost (TrainCycleItem): compute cost estimated by meta_func
+        memory_cost (TrainCycleItem): memory cost estimated by meta_func
+        fwd_allocated: real forward memory allocated
+        fwd_peak: real forward peak memory stats
+        bwd_allocated: real backward memory allocated
+        bwd_peak: real backward peak memory stats
+    """
+    print("=====================")
+    print(f"input shapes: {[tensor.shape for tensor in input]}")
+    print(f"output shapes: {[tensor.shape for tensor in output]}")
+
+    # estimated results
+    print("Estimated Results")
+
+    # compute cost
+    print("compute_cost:")
+    print(f"    fwd: {compute_cost.fwd}")
+    print(f"    bwd: {compute_cost.bwd}")
+
+    # memory cost
+    print("memory_cost:")
+    # fwd
+    print(f"    fwd activation: {memory_cost.fwd.activation / 1024} KB")
+    print(f"    fwd buffer: {memory_cost.fwd.buffer / 1024} KB")
+    print(f"    fwd temp: {memory_cost.fwd.temp / 1024} KB")
+    print(f"    fwd parameter: {memory_cost.fwd.parameter / 1024} KB")
+
+    # bwd
+    print(f"    bwd activation: {memory_cost.bwd.activation / 1024} KB")
+    print(f"    bwd buffer: {memory_cost.bwd.buffer / 1024} KB")
+    print(f"    bwd temp: {memory_cost.bwd.temp / 1024} KB")
+    print(f"    bwd parameter: {memory_cost.bwd.parameter / 1024} KB")
+
+    # actual results
+    print("Actual Results")
+
+    print("memory_cost:")
+    # fwd
+    print(f"    fwd allocated: {fwd_allocated / 1024} KB")
+    print(f"    fwd peak: {fwd_peak / 1024} KB")
+
+    # bwd
+    print(f"    bwd allocated: {bwd_allocated / 1024} KB")
+    print(f"    bwd peak: {bwd_peak / 1024} KB")