[examples] update autoparallel tutorial demo (#2449)

* [examples] update autoparallel tutorial demo

* add test_ci.sh

* polish

* add conda yaml

examples/tutorial/auto_parallel/auto_parallel_with_resnet.py

@@ -4,23 +4,14 @@ from pathlib import Path
 
 import torch
 from titans.utils import barrier_context
-from torch.fx import GraphModule
 from torchvision import transforms
 from torchvision.datasets import CIFAR10
 from torchvision.models import resnet50
 from tqdm import tqdm
 
 import colossalai
-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.solver.cost_graph import CostGraph
-from colossalai.auto_parallel.tensor_shard.solver.graph_analysis import GraphAnalyser
-from colossalai.auto_parallel.tensor_shard.solver.options import DataloaderOption, SolverOptions
-from colossalai.auto_parallel.tensor_shard.solver.solver import Solver
-from colossalai.auto_parallel.tensor_shard.solver.strategies_constructor import StrategiesConstructor
+from colossalai.auto_parallel.tensor_shard.initialize import autoparallelize
 from colossalai.core import global_context as gpc
-from colossalai.device.device_mesh import DeviceMesh
-from colossalai.fx.tracer.tracer import ColoTracer
 from colossalai.logging import get_dist_logger
 from colossalai.nn.lr_scheduler import CosineAnnealingLR
 from colossalai.utils import get_dataloader
@@ -28,12 +19,6 @@ from colossalai.utils import get_dataloader
 DATA_ROOT = Path(os.environ.get('DATA', '../data')).absolute()
 
 
-def parse_args():
-    parser = argparse.ArgumentParser()
-    parser.add_argument('-s', '--synthetic', action="store_true", help="use synthetic dataset instead of CIFAR10")
-    return parser.parse_args()
-
-
 def synthesize_data():
     img = torch.rand(gpc.config.BATCH_SIZE, 3, 32, 32)
     label = torch.randint(low=0, high=10, size=(gpc.config.BATCH_SIZE,))
@@ -41,82 +26,15 @@ def synthesize_data():
 
 
 def main():
-    args = parse_args()
     colossalai.launch_from_torch(config='./config.py')
 
     logger = get_dist_logger()
 
-    if not args.synthetic:
-        with barrier_context():
-            # build dataloaders
-            train_dataset = CIFAR10(root=DATA_ROOT,
-                                    download=True,
-                                    transform=transforms.Compose([
-                                        transforms.RandomCrop(size=32, padding=4),
-                                        transforms.RandomHorizontalFlip(),
-                                        transforms.ToTensor(),
-                                        transforms.Normalize(mean=[0.4914, 0.4822, 0.4465],
-                                                             std=[0.2023, 0.1994, 0.2010]),
-                                    ]))
-
-        test_dataset = CIFAR10(root=DATA_ROOT,
-                               train=False,
-                               transform=transforms.Compose([
-                                   transforms.ToTensor(),
-                                   transforms.Normalize(mean=[0.4914, 0.4822, 0.4465], std=[0.2023, 0.1994, 0.2010]),
-                               ]))
-
-        train_dataloader = get_dataloader(
-            dataset=train_dataset,
-            add_sampler=True,
-            shuffle=True,
-            batch_size=gpc.config.BATCH_SIZE,
-            pin_memory=True,
-        )
-
-        test_dataloader = get_dataloader(
-            dataset=test_dataset,
-            add_sampler=True,
-            batch_size=gpc.config.BATCH_SIZE,
-            pin_memory=True,
-        )
-    else:
-        train_dataloader, test_dataloader = None, None
-
-    # initialize device mesh
-    physical_mesh_id = torch.arange(0, 4)
-    mesh_shape = (2, 2)
-    device_mesh = DeviceMesh(physical_mesh_id, mesh_shape, init_process_group=True)
-
     # trace the model with meta data
-    tracer = ColoTracer()
     model = resnet50(num_classes=10).cuda()
     input_sample = {'x': torch.rand([gpc.config.BATCH_SIZE * torch.distributed.get_world_size(), 3, 32, 32]).to('meta')}
-    graph = tracer.trace(root=model, meta_args=input_sample)
-    gm = GraphModule(model, graph, model.__class__.__name__)
-    gm.recompile()
-
-    # prepare info for solver
-    solver_options = SolverOptions(dataloader_option=DataloaderOption.DISTRIBUTED)
-    strategies_constructor = StrategiesConstructor(graph, device_mesh, solver_options)
-    strategies_constructor.build_strategies_and_cost()
-    cost_graph = CostGraph(strategies_constructor.leaf_strategies)
-    cost_graph.simplify_graph()
-    graph_analyser = GraphAnalyser(gm)
-
-    # solve the solution
-    solver = Solver(gm.graph, strategies_constructor, cost_graph, graph_analyser)
-    ret = solver.call_solver_serialized_args()
-    solution = list(ret[0])
-    if gpc.get_global_rank() == 0:
-        for index, node in enumerate(graph.nodes):
-            print(node.name, node.strategies_vector[solution[index]].name)
-
-    # process the graph for distributed training ability
-    gm, sharding_spec_dict, origin_spec_dict, comm_actions_dict = runtime_preparation_pass(gm, solution, device_mesh)
-    gm = runtime_apply_pass(gm)
-    gm.recompile()
 
+    model = autoparallelize(model, input_sample)
     # build criterion
     criterion = torch.nn.CrossEntropyLoss()
 
@@ -127,65 +45,47 @@ def main():
     lr_scheduler = CosineAnnealingLR(optimizer, total_steps=gpc.config.NUM_EPOCHS)
 
     for epoch in range(gpc.config.NUM_EPOCHS):
-        gm.train()
+        model.train()
 
-        if args.synthetic:
-            # if we use synthetic data
-            # we assume it only has 30 steps per epoch
-            num_steps = range(30)
+        # if we use synthetic data
+        # we assume it only has 30 steps per epoch
+        num_steps = range(30)
 
-        else:
-            # we use the actual number of steps for training
-            num_steps = range(len(train_dataloader))
-            data_iter = iter(train_dataloader)
         progress = tqdm(num_steps)
 
         for _ in progress:
-            if args.synthetic:
-                # generate fake data
-                img, label = synthesize_data()
-            else:
-                # get the real data
-                img, label = next(data_iter)
+            # generate fake data
+            img, label = synthesize_data()
 
             img = img.cuda()
             label = label.cuda()
             optimizer.zero_grad()
-            output = gm(img, sharding_spec_dict, origin_spec_dict, comm_actions_dict)
+            output = model(img)
             train_loss = criterion(output, label)
             train_loss.backward(train_loss)
             optimizer.step()
         lr_scheduler.step()
 
         # run evaluation
-        gm.eval()
+        model.eval()
         correct = 0
         total = 0
 
-        if args.synthetic:
-            # if we use synthetic data
-            # we assume it only has 10 steps for evaluation
-            num_steps = range(30)
+        # if we use synthetic data
+        # we assume it only has 10 steps for evaluation
+        num_steps = range(30)
 
-        else:
-            # we use the actual number of steps for training
-            num_steps = range(len(test_dataloader))
-            data_iter = iter(test_dataloader)
         progress = tqdm(num_steps)
 
         for _ in progress:
-            if args.synthetic:
-                # generate fake data
-                img, label = synthesize_data()
-            else:
-                # get the real data
-                img, label = next(data_iter)
+            # generate fake data
+            img, label = synthesize_data()
 
             img = img.cuda()
             label = label.cuda()
 
             with torch.no_grad():
-                output = gm(img, sharding_spec_dict, origin_spec_dict, comm_actions_dict)
+                output = model(img)
                 test_loss = criterion(output, label)
             pred = torch.argmax(output, dim=-1)
             correct += torch.sum(pred == label)

examples/tutorial/auto_parallel/environment.yaml

+name: auto
+channels:
+  - pytorch
+  - conda-forge
+  - defaults
+dependencies:
+  - _libgcc_mutex=0.1=conda_forge
+  - _openmp_mutex=4.5=2_kmp_llvm
+  - blas=1.0=mkl
+  - brotlipy=0.7.0=py38h27cfd23_1003
+  - bzip2=1.0.8=h7b6447c_0
+  - ca-certificates=2022.12.7=ha878542_0
+  - certifi=2022.12.7=pyhd8ed1ab_0
+  - cffi=1.15.1=py38h74dc2b5_0
+  - charset-normalizer=2.0.4=pyhd3eb1b0_0
+  - coin-or-cbc=2.10.8=h3786ebc_0
+  - coin-or-cgl=0.60.6=h6f57e76_2
+  - coin-or-clp=1.17.7=hc56784d_2
+  - coin-or-osi=0.108.7=h2720bb7_2
+  - coin-or-utils=2.11.6=h202d8b1_2
+  - python=3.8.13
+  - pip=22.2.2
+  - cudatoolkit=11.3
+  - pytorch=1.12.1
+  - torchvision=0.13.1
+  - numpy=1.23.1
+  - pip:
+    - titans
+    - torch==1.12.1
+    - pulp==2.7.0
+    - datasets
+    - colossalai

examples/tutorial/auto_parallel/setup.py

+from setuptools import find_packages, setup
+
+setup(
+    name='auto_parallel',
+    version='0.0.1',
+    description='',
+    packages=find_packages(),
+    install_requires=[
+        'torch',
+        'numpy',
+        'tqdm',
+    ],
+)

examples/tutorial/auto_parallel/test_ci.sh

+#!/bin/bash
+set -euxo pipefail
+
+conda init bash
+conda env create -f environment.yaml
+conda activate auto
+cd ../../..
+pip uninstall colossalai
+pip install -v .
+cd ./examples/tutorial/auto_parallel
+colossalai run --nproc_per_node 4 auto_parallel_with_resnet.py -s